image

image

image

Publications
You may download files with publications only if you will be using them strictly for educational and academic purposes, you or your institution have access rights to these papers, and you respect the copyright of the respective journals.
Peer reviewed publications
Contributed publications
Books & book chapters
2018
Formulation and composition effects in phase transitions of emulsions co-stabilized by cellulose nanofibrils and an ionic surfactant
Huan S., Yokota S., Bai L., Ago M., Borghei M., Kondo T., Rojas O.J.,
Biomacromolecules, Accepted (2018).
Effect of heat treatment and pH on the efficiency of micro-diafiltration in the separation of native fat globules from cream in butter production
Jukkola A., Partanen R., Rojas O.J., Heino A.,
Journal of Membrane Science, 548, 99-107 (2018).
Micro-patterns on nanocellulose films and paper by photo-induced thiol–yne click coupling: a facile method toward wetting with spatial resolution
Guo J., Filpponen I., Johansson L.-S., Heißler S., Li L., Levkin P., Rojas O.J.,
Cellulose, Acccepted (2018).
Strengthening wood fiber networks by adsorption of complexes of chitosan with dialdehyde starch
Korhonen M.H.J., Cunha G., Koponen R., Hirvonen K., Rojas O.J.,
Nordic Pulp and Paper Research Journal, Acccepted (2018).
2017
Porous N, P-doped carbon from coconut shells with high electrocatalytic activity for oxygen reduction: Alternative to Pt-C for alkaline fuel cells
Borghei M., Loacharoen N., Kibena-Põldsepp E., Johansson L-S., Campbell J., Kauppinen E., Tammeveski K., Rojas O.J.,
Applied Catalysis B, 204, 394-402 (2017).
Immunosensors for C-reactive protein based on ultrathin films of carboxylated cellulose nanofibrils
Zhang, Y., Rojas O.J.,
Biomacromolecules, 18, 526–534 (2017).
Spinning of Cellulose Nanofibrils into Filaments: A Review
Lundahl M. J., Klar V., Wang L., Ago M., Rojas O.J.,
Industrial & Engineering Chemistry Research, 56, 8–19 (2017) (ACS Editors' choice).
Clean and high-throughput production of silver nanoparticles mediated by soy protein via solid state synthesis
Abdelgawad A.M., El-Naggar M.E., Eisa W.H., Rojas O.J.,
Journal of Cleaner Production, 144, 501-510 (2017).
Fabrication and characterization of bactericidal thiol-chitosan and chitosan iodoacetamide nanofibres
Abdelgawad A.M., El-Naggar M.E., Hudson S.M., Rojas O.J.,
International Journal of Biological Macromolecules, 94, 96–105 (2017).
Biogenic silica nanoparticles loaded with neem bark extract as green, slow-release biocide
Mattos B.D., Magalhães W.L.E., Rojas O.J.
Journal of Cleaner Production, 142, 4206-4213 (2017).
A review of cellulose and cellulose blends for preparation of bio-derived and conventional membranes, nanostructured thin films and composites
Douglass E.F., Avci H., Boy R., Rojas O.J., Kotek R.
Polymer Reviews, 1-62 (2017).
Calcium Chelation of Lignin from Pulping Spent Liquor for Water-Resistant Slow-Release Urea Fertilizer Systems
Sipponen M.H., Rojas O.J., Pihlajaniemi V., Lintinen K., Österberg M.
ACS Sustainable Chem. Eng., 5, 1054–1061 (2017).
Morphological and thermo-chemical changes upon autohydrolysis and microemulsion treatments of coir and Empty Fruit Bunch (EFB) residual biomass to isolate lignin-rich micro and nano fibrillar cellulose (MNFC)
Tripathi A., Ferrer A., Khan S.A., Rojas O.J.
ACS Sustainable Chem. Eng., 5, 2483–2492 (2017).
Nanocellulose in thin films, coatings, and plies for packaging applications: A review
Hubbe M. A., Ferrer A., Tyagi P., Yin Y., Salas C., Pal L., Rojas O.J.
BioResources, 12, 2143-2233 (2017).
Mechanically-induced dimensional extensibility of fibers towards tough fiber networks
Khakalo A., Vishtal A., Retulainen E., Filpponen I., Rojas O.J.
Cellulose, 24, 191-205 (2017).
Complexes of Magnetic Nanoparticles with Cellulose Nanocrystals as Regenerable, Highly Efficient, and Selective Platform for Protein Separation
Guo J., Filpponen I., Johansson L-S., Mohammadi P., Latikka M., Linder B.M., Ras R.H.A., Rojas O.J.
Biomacromolecules, 18, 898–905 (2017).
Interactions between fungal cellulases and films of nanofibrillar cellulose determined by a quartz crystal microbalance with dissipation monitoring (QCM-D)
Song J., Yang F., Zhang Y., Hu F., Wu S., Jin Y., Guo J., Rojas O.J.
Cellulose, 24, 1947–1956 (2017).
Lignin films from spruce, eucalyptus and wheat straw studied with electroacoustic and optical sensors: Effect of composition and electrostatic screening on enzyme binding
Pereira A., Hoeger I.C., Ferrer A., Rencoret J., del Rio J.C., Kruus K., Rahikainen J., Kellock M., Gutierrez A., Rojas O.J.
Biomacromolecules, 18, 1322-1332 (2017).
Nanocellulose-Surfactant Interactions
Tardy B.L., Yokota S., Ago M., Xiang W., Kondo T., Bordes R., Rojas O.J.
Current Opinion in Colloid & Interface Science, 29, 57-67 (2017).
Protein adsorption tailors the surface energies and compatibility between polylactide and cellulose nanofibrils
Khakalo A., Filpponen I., Rojas O.J.
Biomacromolecules, 18, 1426-1433 (2017).
Supramolecular assemblies of lignin into nano- and microparticles
Ago M., Tardy B.L., Wang L., Guo J., Khakalo A., Rojas O.J.
MRS Bulletin, 42, 371-378 (2017).
Effect of lipoxygenase oxidation on surface deposition of unsaturated fatty acids
Tayeb A.H., Hubbe M.A., Zhang Y., Rojas O.J.
Langmuir, 33, 4559-45662017 (2017) (ACS Editors' choice).
Behavior of nanocelluloses at interfaces
Capron I., Rojas O.J., Bordes R.
Current Opinion in Colloid & Interface Science, 29, 83–95 (2017).
Understanding the Conversion Economics of Cellulose Nanocrystals
Abbati de Assis C., Gonzalez R., Houtman C., Phillips R., Bilek T., Rojas O.J., Pal L., Peresin M.S., Hasan J.
Biofuels, Bioproducts & Biorefining, 11, 682–700 (2017). (Journal's cover)
Lipoxygenase-mediated peroxidation of model plant extractives
Tayeb A.H., Sadeghifar H., Hubbe M.A., Rojas O.J.
Industrial Crops and Products, 104, 253–262 (2017).
Milk fat globules and associated membranes: colloidal properties and processing effects
Jukkola A., Rojas O.J.
Advances in Colloid and Interface Science, 245, 92–101(2017).
Retention of lysozyme activity by physical immobilization in nanocellulose aerogels and antibacterial effects
Uddin K.M.A., Orelma H., Mohammadi P., Borghei M., Laine J., Linder M., Rojas O.J.
Cellulose, 24, 2837–2848 (2017).
Filaments with Affinity Binding and Wet Strength can be achieved by Spinning Bifunctional Cellulose Nanofibrils
Vuoriluoto M., Orelma H., Lundahl M., Borghei M., Rojas O.J.
Biomacromolecules, 18, 1803–1813 (2017).
Photoluminescent Hybrids of Cellulose Nanocrystals and Carbon Quantum Dots as Cytocompatible Probes for in vitro Bio-imaging
Guo J., Liu D., Filpponen I., Johansson L-S., Malho J-M., Quraishi S., Liebner F., Santos H.A., Rojas O.J.
Biomacromolecules, 18, 2045–2055 (2017).
Self-Assembly of Native Cellulose Nanostructures
Arcot L.R., Gröschel A.H., Linder M.B., Rojas O.J., Ikkala O.
in Handbook of Nanocellulose and Cellulose Nanocomposites (eds H. Kargarzadeh, I. Ahmad, S. Thomas and A. Dufresne), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany(2017).
Space-resolved thermal properties of thermoplastics reinforced with carbon nanotubes
Rivière P., Nypelö T., Rojas O.J., Klug A., Mundigler N., Wimmer R.
Journal of Thermal Analysis and Calorimetry, 127, 2059–2074 (2017).
Effect of Different Carbon Sources on Bacterial Nanocellulose Production and Structure Using the Low pH Resistant Strain Komagataeibacter Medellinensis
Molina-Ramírez C., Castro M., Osorio M., Torres-Taborda M., Gómez B., Zuluaga R., Gómez C., Gañán P., Rojas O.J., Castro C.
Materials, 10, 639 (2017).
Soy proteins as a sustainable solution to strengthen recycled paper and reduce deposition of hydrophobic contaminants in papermaking: A bench and pilot-plant study
Tayeb A.H., Hubbe M.A., Tayeb P., Pal L., Rojas O.J.
ACS Sustainable Chemistry & Engineering, 5, 7211–7219(2017).
Contribution of residual proteins to the thermo-mechanical performance of cellulosic nanofibrils isolated from green macroalgae
Guo J., Uddin K.M.A., Mihhels K., Fang W., Laaksonen P., Zhu J.Y., Rojas O.J.
ACS Sustainable Chemistry & Engineering, 5, 6978–6985 (2017).
Featherlight, mechanically robust cellulose ester aerogels for environmental remediation
Tripathi A., Parsons G., Rojas O.J., Khan S.A.
ACS Omega, 2, 4297–4305 (2017).
Controlled release for crop and wood protection: Recent progress toward sustainable and safe nanostructured biocidal systems
Mattos B.D., Tardy B.L., Magalhães W.L.E, Rojas O.J.
Journal of Controlled Release, 262, 139-150 (2017).
Bioactive 3D-shaped wound dressings synthesized from bacterial cellulose: effect on cell proliferation of polyvinyl alcohol integrated in-situ
Osorio M., Velásquez-Cock J., Restrepo L.M., Zuluaga R., Gañán P.F., Rojas O.J., Ortiz Trujillo I.C., Castro C.I.
International Journal of Polymer Science, DOI: 10.1155/2017/3728485 (2017).
In-Plane Compression and Biopolymer Permeation Enable Super-stretchable Fiber Webs for Thermoforming toward 3D Structures
Alexey Khakalo A., Kouko J, Filpponen I., Retulainen E., Rojas O.J.
ACS Sustainable Chemistry & Engineering, 5, 9114–9125 (2017).
Hybrid films of chitosan, cellulose nanofibrils and boric acid: Flame retardancy, optical and thermo-mechanical properties
Uddin K. M. A., Ago M., Rojas O.J.
Carbohydrate Polymers, 177, 13-21 (2017).
The effect of chemical additives on the strength, stiffness and elongation potential of paper
Strand A., Khakalo A., Kouko J., Oksanen A., Ketola A., Salminen K., Rojas O.J., Retulainen E., Sundberg A.
Nordic Pulp & Paper Research Journal, 32, 324-335 (2017).
Cellulose Micro- and nanofibrils (CMNF) Manufacturing - Risk and Financial Assessment
Abbati de Assis C., Iglesias M.C., Bilodeau M., Johnson D., Phillips R., Peresin M.S., Bilek T., Rojas O.J., Venditti, R., Gonzalez R.
Biofuels, Bioproducts & Biorefining, Accepted (2017).
Optical Properties of Self-Assembled Cellulose Nanocrystals Films Suspended at Planar-Symmetrical Interfaces
Tardy B.L., Ago M., Guo J., Borghei M., Kämäräinen T., Rojas O.J.
Small, Accepted (2017).
Advanced Biomass-Derived Electrocatalysts for the Oxygen Reduction Reaction
Borghei M., Lehtonen J., Liu L., Rojas O.J.
Advanced Materials, Accepted DOI:10.1002/adma.201703691 (2017).
Novel materials through assembly of nanocelluloses
Kontturi E., Laaksonen P., Linder M., Nonappa, Gröschel A.H., Rojas O.J., Ikkala O.J.,
Advanced Materials, Accepted DOI: 10.1002/adma.201703691(2017).
Self-association and aggregation of kraft lignins via electrolyte and nonionic surfactant regulation: stabilization of lignin particles and effects on filtration
Fritz C., Salas C., Jameel H., Rojas O.J.,
Nordic Pulp and Paper Research Journal, Acccepted (2017).
Curdlan cryogels reinforced with cellulose nanofibrils for controlled release
El-Naggar M.E., Abdelgawad A.M., Tripathi A., Rojas O.J.,
Journal of Environmental Chemical Engineering, 5, 5754-5761(2018).
2016
Superhydrophobic and Slippery Lubricant-Infused Flexible Transparent Nanocellulose Films by Photoinduced Thiol–Ene Functionalization
Guo J., Fang W., Welle A., Feng W., Filpponen I., Rojas O.J., Levkin P.
ACS Appl. Mater. Interfaces, 8, 34115–34122 (2016).
Attachment of gold nanoparticles on cellulose nanobrils via click reactions and electrostatic interactions
Guo J., Filpponen I., Su P., Laine J., Rojas O.J.
Cellulose, 23, 3065–3075 (2016).
Control of Protein Affinity of Bioactive Nanocellulose and Passivation Using Engineered Block and Random Copolymers
Vuoriluoto M., Orelma H., Zhu, B., Johansson L.-S., Rojas O.J.
ACS Appl. Mater. Interfaces, 8, 5668-5678 (2016).
Strength and Water Interactions of Cellulose I Filaments Wet-Spun from Cellulose Nanofibril Hydrogels
Lundahl M.J., Cunha A.G., Rojo E, Papageorgiou A.C., Rautkari L., Arboleda J.C., Rojas O.J.
Scientific Reports, 6, 30695 (2016).
Cellulose nanofibril films towards piezoelectric materials
Rajala S, Siponkoski T., Sarlin E., Mettänen M., Vuoriluoto M., Pammo A., Juuti J., Rojas O.J., Franssila S., Tuukkanen S.
ACS Applied Materials and Interfaces, 8, 15607–15614 (2016).
UV-ozone patterning of micro-nano fibrillated cellulose (MNFC) with alkylsilane self-assembled monolayers
Kämäräinen T., Arcot L.R., Johansson L.-S., Campbell J., Tammelin T., Franssila S., Laine J., Rojas O.J.
Cellulose, 23, 1847-1857 (2016).
Affinity interactions of human immunoglobulin G with short peptides: role of ligand spacer on binding, kinetics, and mass transfer
Shen F., Rojas O.J., Genzer J., Gurgel P.V., Carbonell R.G.
Analytical and Bioanalytical Chemistry, 408, 1829-184 (2016).
Double emulsions for the compatibilization of hydrophilic nanocellulose with non-polar polymers and validation in the synthesis of composite fibers
Carrillo C.A., Nypelö T., Rojas O.J.
Soft Matter, 12, 2721-2728 (2016).
Effect of PEG-PDMAEMA Block Copolymer Architecture on Polyelectrolyte Complex Formation with Heparin
Välimäki S., Khakalo A., Ora A., Johansson L-S., Rojas O.J., Kostiainen M.A.
Biomacromolecules, 17, 2891–2900 (2016).
Antibacterial Activity of Silver Nanoparticles Synthesized In-situ Cellulose polymers by Solution Spraying
Yan J., Abdelgawad A.M., El-Naggar, M.E., Rojas O.J.
Carbohydrate Polymers, 147, 500-508 (2016).
Interfacial properties of cellulose nanoparticles obtained from acid and enzymatic hydrolysis of cellulose
Domingues A.A., Pereira F.V, Sierakowki M.R., Rojas O.J., Petri D.F.S.
Cellulose, 23, 2421-2437 (2016).
On the polymorphic and morphological changes of cellulose nanocrystals (CNC-I) upon mercerization and conversion to CNC-II
Jin E., Guo J., Yang F., Zhu Y., Song J., Jin Y., Rojas O.J.
Carbohydrate Polymers, 143, 327-335 (2016).
Biogenic SiO2 in colloidal dispersions via ball milling and ultrasonication
Mattos B.D., Magalhães W.L.E., Rojas O.J.
Powder Technology, 301, 58-64 (2016).
Oil-in-water emulsions stabilized by carboxymethylated lignins: Properties and energy prospects
Li S., Willoughby J.A., Rojas O.J
ChemSusChem, 9, 2460–2469 (2016).
Carboxymethylated lignins with low surface tension toward low viscosity and highly stable emulsions of crude bitumen and refined oils
Li S., Ogunkoya D., Fang T., Willoughby J.A., Rojas O.J.
Journal of Colloid & Interface Science, 482, 27–38 (2016).
Interfacial stabilization of fiber-laden foams with carboxymethylated lignin towards strong nonwoven networks
Li S., Xiang W., Järvinen M., Lappalainen T., Salminen K., Rojas O.J.,
ACS Applied Materials and Interfaces, 8, 19827-19835 (2016).
Antioxidant and Thermal Stabilization of Polypropylene by Addition of Butylated-Lignin at Low Loadings
Ye D-Z., Li S., Lu X., Zhang X., Rojas O.J.
ACS Sustainable Chemistry & Engineering, 4, 5248-5257 (2016).
Reinforcement of polypropylene with lignocellulose nanofibrils and compatibilization with biobased polymers
Ferrer A., Hoeger I.C., Lu X., Rojas O.J.
Journal of Applied Polymer Science, 133, 1097-4628 (2016).
Physical, thermal, chemical and rheological characterization of cellulosic microfibrils and microparticles produced from soybean hulls
Ferrer A., Salas C., Rojas O.J.
Industrial Crops and Products, 84, 337-343 (2016).
High-throughput Synthesis of Lignin Particles (~30 nm to ~2 microns) via Aerosol Flow Reactor: Size Fractionation and Utilization in Pickering Emulsions
Ago M., Huan S., Borghei M., Raula J., Kauppinen E.I., Rojas O.J.
ACS Applied Materials and Interfaces, 35, 23302–23310 (2016).
Mesoporous carbon soft-templated from lignin nanofiber networks: microphase separation boosts supercapacitance in conductive electrodes
Ago M., Borghei M., Johannes H., Rojas O.J.
RSC Advances, 6, 85802-85810 (2016).
Starch-Based Biofoams Reinforced with Lignocellulose Nanofibrils from Residual Palm Empty Fruit Bunches: Water Sorption and Mechanical Strength
Ago M., Ferrer A., Rojas O.J.
ACS Sustainable Chem. & Eng., 4, 5546–5552(2016).
Curdlan in fibers as carriers of tetracycline hydrochloride: Controlled release and antibacterial activity
El-Naggar M.E., Abdelgawad M.A., Salas C., Rojas O.J.
Carbohydrate Polymers, 154, 194-203 (2016).
Preparation of photoreactive nanocellulosic material via benzophenone grafting
Orelma H., Vuoriluoto M., Johansson L.-S., Filpponen I., Biesalski M., Rojas O.J.
RSC Advances, 6, 85100-85106 (2016).
Separation of milk fat globules via microfiltration: effect of diafiltration media and opportunities for stream valorization
Jukkola A., Partanen R., Rojas O.J., Heino A.
Journal Dairy Sci., 99, 8644-8654 (2016).
2015
Ambient-Dried Cellulose Nanofibril Aerogel Membranes with High Tensile Strength and Their Use for Aerosol Collection and Templates for Transparent, Flexible Devices
Toivonen MS, Kaskela A, Rojas OJ, Kauppinen, EI, Ikkala O
Advanced Functional Materials, 25, 6618-6626 (2015).
Bio-based wrinkled surfaces harnessed from biological design principles of wood and peroxidase activity
Izawa H, Okuda O, Ifuku S, Morimoto M, Saimoto H, Rojas OJ
ChemSusChem, 8, 3892-3896 (2015).
Highly percolated poly(vinyl alcohol) and bacterial nanocellulose synthesized in-situ by physical-crosslinking: Exploiting polymer synergies for biomedical nanocomposites
Castro C, Zuluaga R, Caro G, Rojas OJ, Filpponen I, Orelma H, Londoño M, Betancourt S, Gañán P
RSC Advances, 5, 90742-90749 (2015).
Paper-based plasmon-enhanced protein sensing by controlled nucleation of silver nanoparticles on cellulose
Arcot LR, Uddin KMA, Chen, Xiang W, Kong X, Johansson LS, Ras RHA, Rojas OJ
Cellulose, 22, 4027-4034 (2015).
Interpenetrated polymer networks in composites with poly (vinyl alcohol), micro- and nano-fibrillated cellulose (M/NFC) and polyHEMA to develop packaging materials
Bai H, Li Y, Wang W, Chen G, Rojas OJ, Dong W, Liu X
Cellulose, 22, 3877–3894(2015).
Nanocellulose and Proteins: Recent developments exploiting their interactions for production, immobilization and synthesis of biocompatible materials
Fritz C, Jeuck B, Salas C, Jameel H, Gonzalez, R., Rojas OJ
Advances in Polymer Science, 271, 207-224 (2015).
Improving the extensibility of paper: Sequential spray addition of gelatine and agar
Vishtal A, Khakalo A, Rojas OJ, Retulainen E
Nordic Pulp and Paper Research Journal, 30, 452-460 (2015).
Influence of Operating Variables and Model to Minimize the Use of Anthraquinone in the Soda-Anthraquinone Pulping of Barley Straw
Ferrer A., Vargas F., Jameel H., Rojas OJ
Bioresources, 10, 6442-6456 (2015).
Green modification of surface characteristics of cellulosic materials at the molecular or nano scale: A review
Hubbe MA, Rojas OJ, Lucia LA
Bioresources, 10, 6095-6206 (2015).
Single-Molecule Resolution of Protein Dynamics on Polymeric Membrane Surfaces: The Roles of Spatial and Population Heterogeneity
Langdon BB, Mirhossaini RB, Mabry JN, Sriram I, Lajmi A, Zhang Y, Rojas OJ, Schwartz DK
ACS Applied Materials & Interfaces, 7, 3607-17 (2015).
Water-resistant, transparent hybrid nanopaper by physical crosslinking with chitosan
Toivonen MS, Kurki-Suonio S, Schacher FH, Hietala S, Rojas OJ, Ikkala O
Biomacromolecules, 16, 1062-1067 (2015).
Cellulose nanofibrils for one-step stabilization of multiple emulsions (W/O/W) based on soybean oil
Carrillo CA, Nypelö TE, Rojas OJ
Journal of Colloid and Interface Science , 45, 166-173 (2015).
Lignin supracolloids synthesized from (W/O) microemulsions: use in the interfacial stabilization of Pickering systems and organic carriers for silver metal
Nypelö TE, Carrillo CA, Rojas OJ
Soft Matter, 11, 2046-2054 (2015).
Comprehensive elucidation of the effect of residual lignin on the physical, barrier, mechanical and surface properties of nanocellulose films
Rojo E, Peresin MS, Sampson WW, Hoeger IC, Vartiainen J, Laine J, Rojas OJ
Green Chemistry, 17, 1853-1866 (2015).
Dynamics of cyclodimerization and viscoelasticity of photo-crosslinkable PVA
Bai H, Xu J, Zhang Y, Liu X, Rojas OJ
Journal of Polymer Science B Polym. Phys., 53, 345–355 (2015).
Effect of charge balance and dosage of polyelectrolyte complexes on the shear resistance of mineral floc strength and reversibility
Korhonen MHJ, Rojas OJ, Laine J
Journal of Colloid and Interface Science, 448, 73-78 (2015).
Development of Self-Bonded Fiberboards from Fiber of Leaf Plantain: Effect of Water and Organic Extractives Removal
Alvarez C, Rojas OJ, Rojano B, Ganán P
BioResources, 10, 672-683 (2015).
Barley Straw (Hordeum vulgare) as a Supplementary Raw Material for Eucalyptus camaldulensis and Pinus sylvestris Kraft Pulp in the Paper Industry
Vargas F, González Z, Rojas OJ, Garrote G, Rodriguez A
BioResources, 10, 3682-3693 (2015).
Role of textile substrate hydrophobicity on the adsorption of hydrosoluble nonionic block copolymers
Song J, Salas C, Rojas OJ
Journal of Colloid and Interface Science, 454, 89–96 (2015).
In-situ glyoxalization during biosynthesis of bacterial cellulose
Castro C, Cordeiro N, Faria M, Zuluaga R, Putaux J-L, Filpponen I, Velez L, Rojas OJ, Ganán P.
Carbohydrate Polymers, 126, 32-39 (2015).
Study on Charge Distribution of Carboxymethylated Cotton Fabric by Streaming Potential/Current Measurements
Wang ZJ, Hauser PJ, Rojas OJ,
AATCC Journal of Research, 2, 13-19(2015).
Performance, combustion, and emissions in a diesel engine operated with fuel-in-water emulsions based on lignin
Ogunkoya O, Li S, Rojas OJ, Fang T.
Applied Energy, 154, 851–861 (2015).
Controlled-release drug carriers based hierarchical silica microtubes templated from cellulose acetate nanofibers
Jia Ch, Song J, Jin Y, Rojas OJ
Journal of Applied Polymer Science, 132, 42562 (2015).
Dewatering of MNFC containing microfibrils and microparticles from soybean hulls: mechanical and transport properties of hybrid films
Ferrer A, Salas C, Rojas OJ,
Cellulose, 22, 3919-3928 (2015).
Interactions between Cellulolytic Enzymes with Native, Autohydrolysis, and Technical Lignins and the Effect of a Polysorbate Amphiphile in Reducing Nonproductive Binding
Fritz C, Ferrer Carrera A, Salas, C, Jameel H, Rojas OJ,
Biomacromolecules, 16, 3878-3888 (2015).
Effect of Molecular Architecture of PDMAEMA-POEGMA Random and Block Copolymers on Their Adsorption on Regenerated and Anionic Nanocelluloses and Evidence of Interfacial Water Expulsion
Vuoriluoto M, Orelma H, Johansson L-S, Zhu B, Poutanen M, Walther A, Laine, Rojas OJ,
Journal of Physcal Chemistry B, 119, 15275-1586 (2015).
Amphoteric Polymers to Improve Paper Dry Strength
Silva DJ, Park SW, Hubbe MA, Rojas OJ,
Journal of Chemical Engineering and Chemistry, 1, 65–79 (2015).
2014
Microbeads and Hollow Microcapsules Obtained by Self-Assembly of Pickering Magneto-Responsive Cellulose Nanocrystals,
Nypelö T., Rodriguez-Abreu C., Kolen'ko Y.V., Rivas J., Rojas O.J.
ACS Applied Materials & Interfaces, 6, 16851-16858(2014).
Nanocellulose Properties and Applications in Colloids and Interfaces
Salas C., Nypelö T., Rodriguez-Abreu C., Carrillo C., Rojas O.J.
Current Opinion in Colloid & Interface Science, 19, 383–396 (2014).
Microemulsion Systems for Fiber Deconstruction into Cellulose Nanofibrils
Carrillo CA, Laine J, Rojas OJ,
ACS Applied Materials and Interfaces, 6, 22622–22627 (2014).
Asymmetric cellulose nanocrystals: thiolation of reducing end groups via NHS–EDC coupling
Arcot LR, Lundahl M, Rojas OJ, Laine J
Cellulose, 21,4209–4218 (2014).
Using gelatin protein to facilitate paper thermoformability
Khakalo A., Filpponen F., Johansson L-S, Vishtal A, Arcot LR, Rojas OJ, Laine J
Reactive and Functional Polymers, 85, Pages 175–184 (2014)
Affibody conjugation onto bacterial cellulose tubes and bioseparation of human serum albumin
Orelma H, Morales OL, Johansson L-S, Hoeger IC, Filpponen I, Castro C., Rojas O.J., Laine J.
RSC Advances, 4, 51440-51450 (2014).
Synthesis of soy protein-lignin nanofibers by solution electrospinning
Salas C, Ago M, Lucia LA, Rojas OJ
Reactive & Functional Polymers, 85, 221–227 (2014).
Acid-Generated Soy Protein Hydrolysates and Their Interfacial Behavior on Model Surfaces
Arboleda JC, Rojas OJ, Lucia LA
Biomacromolecules, 15, 4336–4342 (2014).
Soy Protein-Based Polyelectrolyte Complexes as Biobased Wood Fiber Dry Strength Agents
Arboleda JC, Niemi N, Kumpunen J, Lucia LA, Rojas OJ
ACS Sustainable Chemistry & Engineering, 2, 2267–2274 (2014).
Silver nanoparticle synthesis mediated by carboxylated cellulose nanocrystals
Uddin KMA, Lokanathan AR, Liljeström A, Chen X, Rojas OJ, Laine J
Green Material, 2, 183 –192 (2014)
A facile and green method to hydrophobize films of cellulose nanofibrils and silica by laccase-mediated coupling of non-polar colloidal particles
Cusola O, Roncero MA, Vidal T, Rojas OJ
ChemSusChem, 7, 2868 - 2878 (2014)
Synthesis of Thermoplastic Starch-Bacterial Cellulose Nanocomposites via in situ Fermentation
Osorio M.A., Restrepo D., Velásquez-Cock J.A., Zuluaga R.O., Montoya U, Rojas OJ, Gañán PF, Marin D, Castro, CI
Journal of the Brazilian Chemical Society, 25, 1607-1613 (2014)
Magneto-responsive hybrid materials based on cellulose nanocrystals
Nypelö T, Rodriguez-Abreu C, Rivas J, Dickey MD, Rojas OJ
Cellulose, 21, 4, 2557-2566 (2014).
Modification of cellulose nanofibrils (CNF) with luminescent carbon dots (CDs)
Junka K, Gao J, Filpponen I, Laine J, Rojas OJ
Biomacromolecules, 15, 876-881 (2014)
Dynamic and Equilibrium Performance of Sensors based on Short Peptide Ligands for Affinity Adsorption of Human IgG Using Surface Plasmon Resonance
Islam N, Gurgel P, Rojas OJ, Carbonell RG
Biosensors and Bioelectronics, 58, 380-387 (2014).
Molecular Dynamics Simulations of the Adhesion of a Thin Annealed Film of Oleic Acid onto Crystalline Cellulose
Quddus M, Rojas OJ, Pasquinelli M
Biomacromolecules, 15, 4, 1476-1483 (2014).
“Effects of residual lignin and heteropolysaccharides on the bioconversion of softwood lignocellulose nanofibrils obtained by SO2-ethanol-water fractionation
Morales L.O., Iakovlev M., Martin-Sampedro R., Rahikainen J., Laine J., van Heiningen A., Rojas O.J.
Bioresource Technology, 161, 55–62 (2014).
“In situ production of nanocomposites of poly(vinyl alcohol) and cellulose nanofibrils from Gluconacetobacter bacteria: effect of chemical crosslinking”
Castro C., Vesterinen A., Zuluaga R., Caro G., Filpponen I., Rojas O.J., Kortaberria G., Gañán P.
Cellulose, 21, 3, 1745-1756 (2014).
“Effects of Composition of Oligo(ethylene glycol)-Based Mixed Monolayers on Peptide Grafting and Human Immunoglobulin Detection”
Islam N., Gurgel P., Rojas O.J., Carbonell R.
The Journal of Physical Chemistry, 118, 5361-5373 (2014).
“Cellulose nanocrystal-mediated synthesis of silver nanoparticles: Role of sulfate groups in nucleation phenomena”
Lokanathan A.R., Uddin K.M.A., Rojas O.J., Laine J.
Biomacromolecules, 15, 373–379 (2014).
“Adsorption of polyalkyl glycol ethers and triblock nonionic polymers on PET”
Song J., Krause W., Rojas O.J.
Journal of Colloid and Interface Science, 420, 174–181 (2014).
“Crosslinked PVA Nanofibers Reinforced with Cellulose Nanocrystals: Water Interactions and Thermomechanical Properties”
Peresin M.S., Vesterinen A.-H., Habibi Y., Johansson L.-S., Pawlak J.J., Nevzorov A.A., Rojas O.J.
Journal Applied Polymer Science, DOI: 10.1002/app.40334.
“Antimicrobial wound dressing microfiber mats from multicomponent (chitosan/silver-NPs/polyvinyl alcohol) systems”
Abdelgawad A.M., Hudson S.M., Rojas O.J.
Carbohydrate Polymers, 100, 166-178 (2014).
“A method for the heterogeneous modification of nanofibrillar cellulose in aqueous media”
Junka K., Filpponen I., Johansson L-S., Kontturi E., Rojas O.J., Laine J.
Carbohydrate Polymers, 100, 107– 115 (2014).
Mountain Pine Beetle-Killed Lodgepole Pine for the Production of Submicron Lignocellulose Fibrils
Hoeger I.C., Gleisner R., Negron J., Rojas O.J., Zhu J.Y.
Journal Forest Science, 60, 3, 502-511 (2014)
“Nano- and micro-fiber composites reinforced with cellulose nanocrystals”
Peresin M.S., Zoppe J.O., Vallejos M.E., Habibi Y., Hubbe M.A., Rojas O.J.
in Cellulose Based Composites: New Green Nanomaterials, Wiley-VCH Verlag GmbH, ISBN 13: 9783527327195, Weinheim, Germany (2014)
Cellulose in the manufacture of thin films
Hoeger I., Rojas O.J.
in Handbook of Green Materials Processing Technologies, Properties and Applications (Oksman, K., Mathew, A.P., Bismark, A., Rojas, O.J., Sain, M. (Eds.), World Scientific, ISBN: 978-981-4566-45-2 (2014)
“A new microorganism for an alternative production of bacterial cellulose”
Castro C., Cleenwerck I., Zuluaga R., Caro G., Putaux J-L., Rojas O.J., Gañán P.
in Handbook of Green Materials Processing Technologies, Properties and Applications (Oksman, K., Mathew, A.P., Bismark, A., Rojas, O.J., Sain, M. (Eds.), World Scientific, ISBN: 978-981-4566-45-2 (2014)
Destintado en medio neutro de papel reciclado aplicando mezclas de enzimas celulasa y ?-amilasas
Sulbaran B., Turrado J., Delgado E., Rojas O., Venditti R.V.
European Scientific Journal, 10, 151-158 (2014).
Electrospinning of nanocellulose-based materials
Peresin M.S., Rojas O.J.
in Handbook of Green Materials Processing Technologies, Properties and Applications (Oksman K., Mathew A.P., Bismark A., Rojas O.J., Sain M. (Eds.), World Scientific, ISBN: 978-981-4566-45-2 (2014)
2013
Bioactive Cellulose Nanofibrils for Specific Human IgG Binding
Zhang Y., Carbonell R.G., Rojas O.J.
Biomacromolecules, 14, 4161–4168 (2013).
Thermal-Mechanical Properties of Lignin-based Electrospun Nanofibers and Films Reinforced with Cellulose Nanocrystals: A Dynamic Mechanical and Nanoindentation Study
Ago M., Jakes J, Rojas O.J.
ACS Applied Materials & Interfaces, 5, 11768–11776 (2013).
Activated carbon from biochar: Influence of its physicochemical properties on the sorption characteristics of phenanthrene”
Park J., Hung I., Gan Z., Rojas O.J., Lim K-H, Park S.
Bioresource Technology, 149, 383-389 (2013)
Cilia-Like Hairy Surfaces Based on End-Immobilized Nanocellulose Colloidal Rods
Lokanathan A.R., Seitsonen J., Nykänen A., Johansson L-S., Campbell J., Rojas O.J., Ikkala O., Laine J.
Biomacromolecules, 14, 2807–2813(2013)
“The unusual interactions between polymer grafted cellulose nanocrystal aggregates”
Rojas O.J., Lokanathan A.R., Kontturi E., Laine J., Bock H.
Soft Matter, 9, 8965-8973(2013)
“Evaluation of O/W microemulsions to penetrate the capillary structure of woody biomass: interplay between composition and formulation in green processing”
Carrillo C., Saloni D., Rojas O.J.
Green Chemistry , 15, 3377–3386(2013)
“Soy protein–nanocellulose composite aerogels”
Arboleda J.C., Hughes M., Lucia L.A., Laine J., Ekman K., Rojas O.J.
Cellulose , 20, 2417–2426 (2013)
“Specificity and Regenerability of Short Peptide Ligands Supported on Polymer Layers for Immunoglobulin G Binding and Detection”
Zhang Y., Islam N., Carbonell R.G., Rojas O.J.
Biomacromolecules , 5, 8030-8037 (2013)
“Cellulose Nanofibrils: From Strong Materials to Bioactive Surfaces”
Zhang Y., Nypelö T., Salas C., Arboleda J., Hoeger I., Rojas OJ.
Journal of Renewable Resources, 1, 195-211 (2013)
“Generation and properties of antibacterial coatings based on electrostatic attachment of silver nanoparticles to protein-coated polypropylene fiber”
Goli K., Gera N. Liu X., Rao B., Rojas O.J., Genzer J.
ACS Applied Materials & Interfaces, 5, 5298-5306(2013)
“Laccase-mediated coupling of nonpolar chains for the hydrophobization of lignocellulose”
Garcia-Ubasart J., Vidal T., Torres AL., Rojas OJ.
Biomacromolecules, 14, 1637-1644(2013)
“Approaching Superhydrophobicity Based on cellulosic materials: A Review”
Song J., Rojas O.J.
Nordic P&P Research Journal, 28, 216-238 (2013)
“Water-Wettable Polypropylene Fibers by Facile Surface Treatment Based on Soy Proteins”
Salas C., Genzer J., Hubbe M.A., Lucia L.A., Rojas O.J.
ACS Applied Materials & Interfaces, 5, 6541-6548(2013)
“Cellulosic Substrates for Removal of Pollutants from Aqueous Systems: A Review. 3. Spilled Oil and Emulsified Organic Liquids”
Hubbe M.A., Rojas O.J., Fingas M., Gupta B.S.
Bioresources , 8, 3038-3097 (2013)
“Preferential adsorption and activity of monocomponent cellulases on lignocellulose thin films with varying lignin content”
Martín-Sampedro R., Rahikainen J.L., Johansson L-S., Marjamaa K., Laine J., Kruus K., Rojas O.J.
Biomacromolecules, 14, 1231–1239 (2013)
“Protein-assisted 2D assembly of gold nanoparticles on a polysaccharide surface”
Taajamaa L., Rojas O.J., Laine J., Yliniemi K., Kontturi E.
Chemical Communications, 59, 1318-1320 (2013)
“Specific binding and detection of IgG by bioactive short peptides immobilized on supported copolymer layers”
Zhang Y., Islam N., Carbonell R.G., Rojas O.J.
Analytical Chemistry, 85, 1106–1113 (2013)
“On the surface interactions of proteins with lignin”
Salas C., Rojas O.J., Lucia L.A., Hubbe M.A., Genzer J.
ACS Applied Materials & Interfaces, 5, 199–206 (2013)
“Inhibitory effect of lignin during cellulose bioconversion: the effect of lignin chemistry on non-productive enzyme adsorption”
Rahikainena J., Martin-Sampedro R., Heikkinena H., Rovioa S., Marjamaaa K., Tamminena T., Rojas O.J., Kruus K.
Bioresource Technology, 133, 270–278 (2013)
“Mechanical Deconstruction of Lignocellulose Cell Walls and their Enzymatic Saccharification”
Hoeger I.C., Nair S.S., Ragauskas A.J., Yulin Deng Y., Rojas O.J., Zhu J.Y.
Cellulose, 20, 807-818 (2013)
“Transformation of lignocellulosic biomass during torrefaction”
Park J., Meng J., Lim K.H., Rojas O.J., Park S.
Journal of Analytical and Applied Pyrolysis, 100, 199–206(2013)
2012
“Interfacial Properties of Lignin-based Electrospun Nanofibers and Films Reinforced with Cellulose Nanocrystals”
Ago, M., Jakes, J.E., Johansson, L-S., Park, S., Rojas, O.J.
ACS Applied Materials and Interfaces, 4, 6849-6856 (2012)
“Rapid and Complete Enzyme Hydrolysis of Lignocellulosic Nanofibrils”
Martin-Sampedro, R., Filpponen, I., Hoeger, I.C., Zhu, J.Y., Laine, J., Rojas, O.J.
ACS Macro Letters, 1, 1321-1325 (2012)
“Formation and antifouling properties of amphiphilic coatings on polypropylene fibers”
Goli, K., Rojas, O.J., Genzer, J.
Biomacromolecules , 13, 3769-3779 (2012)
“Surface functionalized nanofibrillar cellulose (NFC) film as a platform for rapid immunoassays and diagnostics”
Orelma, H., Filpponen, I., Johansson, L-S., Österberg, M., Rojas, O.J., Laine, J
Biointerphases , 7, 61 (2012)
“Antimicrobial wound dressing microfiber mats from multicomponent (chitosan/silver-NPs/polyvinyl alcohol) systems”
Abdelgawad, A.M., Hudson, S.M., Rojas, O.J.
Carbohydrate Polymers ,
“Bi-component lignocellulose thin films to study the role of surface lignin in cellulolytic reactions”
Hoeger, I.C., Filpponen, I., Martin-Sampedro, R., Johansson, L-S., Österberg, M., Laine, J., Kelley, S., Rojas, O.J.
Biomacromolecules, 13, 3228–3240(2012)
“A Survey of Soy Protein Flour as a Novel Dry Strength Additive for Papermaking Furnishes, Journal of Agricultural and Food Chemistry”
Hao-yu, J., Lucia, L.A., Rojas, O.J., Hubbe, M.A., Pawlak, J.J.
Journal of Agricultural and Food Chemistry, 60, 9828-33 (2012)
“Valorization of residual Empty Palm Fruit Bunch Fibers (EPFBF) by Microfluidization: Production of Nanofibrillated Cellulose and EPFBF Nanopaper”
Ferrer, A., Filpponen, I., Rodríguez, A., Laine, J., Rojas, O.J.
Bioresource Technology, 125, 249–255 (2012)
“Effect of Residual Lignin and Heteropolysaccharides in Nanofibrillar Cellulose and Nanopaper”
Ferrer, A., Quintana, E., Filpponen, I., Solala, I., Vidal, V., Rodríguez, R., Laine, J., Rojas, O.J.
Cellulose, 19, 2179–2193 (2012)
“Generic Method for Attaching Biomolecules via Avidin-Biotin Complexes Immobilized on Films of Regenerated and Nanofibrillar Cellulose”
Orelma, H., Johansson, L-S., Filpponen, I., Rojas, O.J., Laine, J.
Biomacromolecules, 13, 2802-2810 (2012)
“Capillary flooding of wood with microemulsions from Winsor I systems”
Carrillo C.A., Saloni, D., Lucia, L., Hubbe, M.H., Rojas, O.J.
Journal of Colloid and Interface Science, 381, 171–179 (2012)
“Piezoelectric Effect of Cellulose Nanocrystals Thin Films”
Csoka, L., Hoeger, I., Rojas, O.J., Peszlen, I., Pawlak, J.J., Peralta, P.P.
ACS Macro Lett., 1, 867–870 (2012)
“Oil Spills Abatement: Factors Affecting Oil Uptake by Cellulosic Fibers”
Payne, K., Jackson, C., Aizpurua Gonzalez, C., Rojas, O.J., Hubbe, M.
Environmental Science & Technology, 46:7725-7730 (2012)
“All-Cellulose Composite Fibers obtained by Electrospinning Dispersions of Cellulose Acetate and Cellulose Nanocrystals”
Vallejos, M.E., Peresin, M.S., Rojas, O.J.
Journal of Polymers and the Environment, Accepted (2012)
“Bicomponent fibre mats with adhesive ultra-hydrophobicity tailored with cellulose derivatives”
Taajamaa, L., Kontturi, E., Laine, J., Rojas, O.J.
J. Mater. Chem., 22, 12072-12082 (2012)
“Generation of functional coatings on hydrophobic surfaces through deposition of denatured proteins followed by grafting from polymerization”
Goli, K., Rojas, O. J., Ozcam, A., Genzer, J.
Biomacromolecules, 13, 1371–1382 (2012)
“Bacterial cellulose produced by a novel acid-resistant strain Gluconacetobacter medellensis”
Castro, C., Zuluaga, R., Álvarez, C., Putaux, J-L., Caro, G., Rojas, O.J. Mondragon, I., Gañán, P.
Carbohydrate Polymers, 89,1033-1037 (2012)
“Lignin-Based Electrospun Nanofibers Reinforced with Cellulose Nanocrystals”
Ago, M., Okajima, K., Jakes, J.E., Park, S., Rojas, O.J.
Biomacromolecules, 13: 918–926 (2012)
“Pickering emulsions stabilized by cellulose nanocrystals grafted with thermo-responsive polymer brushes”
Zoppe, J.O., Venditti, R.A., Rojas, O.J.
Journal of Colloid and Interface Science, 369: 202–209 (2012)
“Adsorption of glycinin and ß-conglycinin on silica and cellulose:surface interactions as a function of denaturation, pH, and electrolytes”
Salas, Carlos, Rojas, O. J., Lucia, L. Hubbe, M.A., Genzer, J.
Biomacromolecules, 13: 387-396 (2012)
“Functionalizing cellulose fibers by mineral and ceramic nanoparticle deposition”
Nypelo, T., Rojas, O.J.
Am. Ceramic Society Bulletin, 91: 28-31 (2012)
“Boundary Lubrication of PEO-PPO-PEO Triblock Copolymer Physisorbed on Polypropylene, Polyethylene, and Cellulose Surfaces”
Li, Y., Rojas, O.J., Hinestroza, J.P. .
Ind. Eng. Chem. Res. , 51: 2931-2940 (2012)
“Experimental and Computational Study of the Effect of Alcohols on the Solution and Adsorption Properties of a Nonionic Symmetric Triblock Copolymer”
Liu, X., He, F., Salas, C., Pasquinelli, M., Genzer, J., Rojas, O.J.
Journal of Physical Chemistry B, 116: 1289–1298 (2012)
“The Soft-Confined Method for Creating Molecular Models Amorphous Polymer Surfaces”
Liu, H., Li, Y., Krause, W., Rojas, O.J., Pasquinelli, M.
Journal of Physical Chemistry B, 116: 1570–1578 (2012)
“Mesoscopic Simulations of the Phase Behavior of Aqueous EO19PO29EO19 Solutions Confined and Sheared by Hydrophobic and Hydrophilic Surfaces” Liu, H., Li, Y., Krause, W., Pasquinelli, M., Rojas, O.J.
ACS Applied Materials & Interfaces, 4: 87-95(2012)
“Molecular Dynamics Simulations of the Thermal Stability of Crystalline Cellulose Surfaces Coated With Oleic Acid”
Quddus, M.A.A.R., Rojas, O.J., Pasquinelli, M.A.
in “Functional Materials from Renewable Sources” (Liebner, F. and Rosenau, T., Eds.) , 1107, 191-208 (2012)
2011
“Modification of Cellulose Films by Adsorption of CMC and Chitosan for Controlled Attachment of Biomolecules”
Orelma, O., Filpponen, I., Johansson, L-S, Laine, J., Rojas, O.J.
Biomacromolecules, 12(12): 4311–4318(2011)
“Phase-specific pore growth in ultrathin bicomponent films from cellulose-based polysaccharides”
Taajamaa, L., Rojas, O.J., Laine, J, Kontturi. E.
Soft Matter, 7: 10386-10394 (2011)
“Dielectrophoresis of cellulose nanocrystals and their alignment in ultrathin films by electric field-assisted shear assembly”
Csoka, L., Hoeger, I., Peralta, P., Peszlen, I., Rojas, O.J.
Journal of Colloid and Interface Science , 363(1):206-12 (2011)
“Ultrathin film coatings of aligned cellulose nanocrystals from a convective-shear assembly system and their surface mechanical properties”
Hoeger, I., Rojas, O.J., Efimenko, K., Velev, O.D., Kelley, S.S.
Soft Matter, 7 (5), 1957-1967 (2011)
“Surface Interaction Forces of Cellulose Nanocrystals Grafted with Thermo-responsive Polymer Brushes”
Zoppe, J.O., Osterberg, M., Venditti, R.A., Laine, J., Rojas, O.J.
Biomacromolecules, 12 (7): 2788–2796 (2011)
“Adsorption and Association of a Symmetric PEO-PPO-PEO Triblock Copolymer on Polypropylene, Polyethylene, and Cellulose Surfaces”
Li, Y., Liu, H., Song, J., Rojas, O.J., Hinestroza, J.P.
ACS Applied Materials and Interfaces, 3 (7): 2349–2357 (2011)
“Adsorption of PEO-PPO-PEO Triblock Copolymers with End-Capped Cationic Chains of Poly(2-dimethylaminoethyl methacrylate)”
Liu, X., Vesterinen A-H., Genzer, J., Seppälä, J.V., Rojas, O.J.
Langmuir , 27 (16), 9769–9780 (2011)
“Multilayers of Weak Polyelectrolytes of Low and High Molecular Mass Assembled on Polypropylene and Self-assembled Hydrophobic Surfaces”
Liu, X., Goli, K., Genzer, J., Rojas, O.J.
Langmuir, 27 (8), 4541–4550 (2011)
“Multilayers of low-charge-density polyelectrolytes on thin films of carboxymethylated and cationic cellulose”
Wang, Z., Hauser, P., Rojas, O.J.
Journal of Adhesion Science and Technology, 25 (6-7), 643-660 (2011)
“Water Vapor Barrier Properties of Microfibrillated Cellulose Films”
Spence, K.L., Venditti, R.A., Rojas, O.J., Pawlak, J.J., Hubbe, M.A.
Bioresources, 6(4):4370-4388 (2011)
“A comparative study of energy consumption and physical properties of microfibrillated cellulose produced by different processing methods”
Spence, K.L., Venditti, R.A., Rojas, O.J., Habibi, Y., Pawlak, J.P.
Cellulose, 18:1097–1111 (2011)
“Lignin Changes after Steam Explosion and Laccase-Mediator Treatment of Eucalyptus Wood Chips”
Martin-Sampedro, R., Capanema, E.A., Hoeger, I., Villar, J.C., Rojas, O.J.
Journal of Agricultural and Food Chemistry, 59 (16): 8761–8769 (2011)
“Self-bonding boards from plantain fiber bundles after enzymatic treatment”
Álvarez, C., Rojano, B., Almaza, O.,Rojas, O.J., Gañán, P.
Journal of Polymers and the Environment, 19(1), 182-188 (2011)
“Enzymatic treatment as a pre-step to remove cellulose films in from sensors”
Silva, D.J., Rojas, O.J., Hubbe, M.A., Park, S.W.
Macromolecular Symposia, 299/300, 107–112 (2011)
“Permeation of a Cationic Polyelectrolyte into Meso-porous Silica. Part 3”
Wu, N., Hubbe, M.A., Rojas, O.J., Park, S
Colloids and Surfaces, 381, 1-6 (2011)
“Cellulose nanocrystals-based nanocomposites: fruits of a novel biomass research and teaching platform”
Cao, X., Habibi, Y. Magalhães, W., Rojas, O.J. Lucia, L.A.
Current Science , 100, 8, 11762-1176 (2011)
2010
“Poly(N-isopropylacrylamide) Brushes Grafted from Cellulose Nanocrystals via Surface-Initiated Single-Electron Transfer Living Radical Polymerization”
Zoppe, J., Habibi,Y., Rojas, O.J., Venditti, R.A., Johansson, L-S., Efimenko, K., Osterberg, M., Laine, J.
Biomacromolecules, 11 (10), 2683–2691 (2010)
“Effect of Moisture on Electrospun Nanofiber Composites of Poly(vinyl alcohol) and Cellulose Nanocrystals”
Peresin, P., Habibi, Y., Vesterinen, A-H., Rojas, O.J., Pawlak, J.J., J.V. Seppälä
Biomacromolecules, 11, 2471–2477 (2010)
“Surface and friction behaviors of a silicone surfactant adsorbed on model nonwoven substrates”
Liu, X., Song, J., Wu, D., Genzer, J., Theyson, T., Rojas, O.J.
Journal of Industrial & Engineering Chemistry Research, 49, 8550–8557 (2010)
“Monitoring Cellulase Protein Adsorption and Recovery Using SDS-PAGE”
Hu, G., Heitmann, J.A., Rojas, O.J., Pawlak, J.J., Argyropoulos, D.S.
Journal of Industrial & Engineering Chemistry Research, 49, 8333–8338 (2010)
“Nanofiber Composites of Polyvinyl Alcohol and Cellulose Nanocrystals: Manufacture and Characterization”
Peresin,M.S.,Habibi,Y., Zoppe, J.O., Pawlak, J.J., Rojas, O.J.
Biomacromolecules, 11, 674–681 (2010)
“The Effect of Chemical Composition on Microfibrillar Cellulose Films from Wood Pulps: Water Interactions and Physical Properties for Packaging Applications”
Spence, K., Venditti, R.A., Habibi, Y., Rojas, O.J., Pawlak, J.J.
Cellulose, 17, 835–848, (2010)
“Permeation of a Cationic Polyelectrolyte into Meso-porous Silica. Part 2. Effects of Time and Pore Size on Streaming Potential”
Wu, N., Hubbe, M.A., Rojas, O.J., Park, S.
Colloids and Surfaces, 364, 7–15 (2010)
“Adsorption of a Nonionic Symmetric Triblock Copolymer on Surfaces with Different Hydrophobicity”
Liu, X., Wu, D., Turgman-Cohen, S., Genzer, J., Theyson, T., Rojas, O.J.
Langmuir, 26, 9565–9574 (2010)
“The effect of chemical composition on microfibrillar cellulose films from wood pulps: Mechanical processing and physical properties”
Spence, K., Venditti, R.A., Habibi, Y., Rojas, O.J., Pawlak, J.J.
Bioresources Technology, 101, 5961–5968(2010)
“Permeation of a Cationic Polyelectrolyte into Meso-porous Silica. Part 1. Factors Affecting Changes in Streaming Potential”
Wu, N., Hubbe, M.A., Rojas, O.J., Park, S.
Colloids and Surfaces, 364, 1–6, (2010)
“Effect of charge asymmetry on adsorption and phase separation of polyampholytes on silica and cellulose”
Song, J. Yamagushi, T., Silva, D.J., Hubbe, M.A. and Rojas
Journal of Physical Chemistry B, 114, 719–727 (2010)
“Cellulose Nanocrystals: Chemistry, Self-assembly and Applications”
Habibi, Y. Lucia, L., and Rojas, O.J.
Chemical Reviews, 110, 3479–3500(2010)
“Thin Films of Cellulose Nanocrystals obtained by the Langmuir-Schaeffer Technique”
Hoeger, I.C., Habibi, Y., Kelley, S. and Rojas, O.J.
Langmuir, 26(2), 990–1001 (2010)
2009
“Polyampholytes: their Use in Papermaking and their solution and Adsorption Behaviors”
Silva, D.J, Rojas, O.J., Hubbe, M.A, Park, S.W., Yamaguchi, T., Song, J.
O’Papel, 70(9), 40-50 (2009)
“Investigation of adsorption behaviors of polyampholytes”
Yamaguchi, T, Hubbe, M. A., Rojas, O. J.
Kami Parupu Kenkyu Happyokai Koen Yoshishu, 76, 6-9 (2009)
“In-situ monitoring of cellulase activity by microgravimetry with a quartz crystal microbalance”
Hu, G., Heitmann, J.A., Rojas, O.J.
Journal of Physical Chemistry B, 113 (44), 14761–14768 (2009)
“Reinforcing Poly(caprolactone) Nanofibers with Cellulose Nanocrystals”
Zoppe, J.O., Peresin, M.S., Habibi, Y., Venditti, R.A, Rojas, O.J.
Appl. Mater. Interfaces, 1(9) , 1996–2004 (2009)
“Permeation of Polyelectrolytes and other Solutes into the Pore Spaces of Water-Swollen Cellulose: A Review”
Wu, N., Hubbe, M.A., Rojas, O.J., Park, S.
Bioresources , 4(3), 1222-1262 (2009)
“Sugar Surfactants in Paper Recycling”
Spence, K., Venditti, R.A., Rojas, O.J.
Nordic Pulp and Paper Research Journal, 24(1), 107-111 (2009)
“Dispersion of Cellulose Crystallites by Nonionic Surfactants in a Hydrophobic Polymer Matrix”
Kim, J., Montero, G., Habibi, Y., Hinestroza, J.P., Genzer, J., Argyropoulos, D.S., Rojas, O.J.
Polymer Engineering and Science, 49 (10), 2054 – 2061 (2009)
“Electrospun nanocomposites from polystyrene loaded with cellulose nanowhiskers”
Rojas, O.J., Montero, G., Habibi, Y.
Journal Applied Polymer Science, 113(2), 927-935 (2009)
“Quantification of Cellulase Activity Using the Quartz Crystal Microbalance Technique”
Hu, G., Heitmann, J.A., Rojas, O.J.
Analytical Chemistry, 81 (5): , 1872-1880 (2009)
“Development and Characterization of Thin Polymer Films Relevant to Fiber Processing”
Song, J., Liang, J., Liu, X., Krause, W.E., Hinestroza, J.P, Rojas, O.J.
Thin Solid Films, 517(15), 4348-4354 (2009)
“Tools to Probe Nanoscale Surface Phenomena in Cellulose Thin Films – Applications in the Area of Adsorption and Friction
Song, S., Li, Y., Hinestroza, J.P., Rojas, O.J.
Chapter 4 in “The Nanoscience & Technological Aspects of Renewable Biomaterials” (Lucia, L.A. and Rojas, O.J., Eds.), Wiley-Blackwell, Oxford, U.K, (2009)
“Interfacial Properties of Sugar-based Surfactants”
Rojas, O.J., Lucia, L.A., Habibi, Y and Stubenrauch C.
Bio–Based Surfactants and Detergents: Synthesis, Properties, and Applications (Hayes, Ashby, Solaiman, and Kitamoto, Eds.) AOCS Press , ISBN = 978-1-893997-67-7., pp (2009)
“Evaluation of Adsorbed Polyampholyte Layers by Using Quartz Crystal Microbalance ”
Silva, D.J., Rojas, O.J, Park, S.W. Hubbe, M.A.
Elsevier Computer Aided Chemical Engineering Series, R.M. de Brito Alves, C.A. Oller do Nascimento and E.C. Biscaia Jr. (Editors), pp (2009)
2008
“Colloidal Stability and Aggregation of Lignocellulosic Materials in Aqueous Suspension: A Review”
Hubbe, M.A., Rojas, O.J.
Bioresources , 3(4), 1419-1491 (2008)
“Enzymatic hydrolysis of native cellulose nanofibril and other cellulose model films – Effect of surface structure”
Ahola, S., Turon, X., Österberg, M., Laine, J., Rojas, O.J.
Langmuir , 24 (20), 11592–11599 (2008)
“Cellulosic nanocomposites: A review”
Hubbe, M. A., Rojas, O. J., Lucia, L. A., and Sain, M.
BioResources, 3(3) , 929-980 (2008)
“Enzymatic Kinetics of Cellulose Hydrolysis: A QCM-D Study”
Turon, X., Rojas, O.J., Deinhammer, R.S.
Langmuir, , 24(8), 3880-3887 (2008)
“Feedstock Pretreatment Strategies for Producing Ethanol from Wood, Bark, and Forest Residues”
Hu, G., Heitmann, J.A. and Rojas, O.J.
Bioresources , 3(1) , 270-294 (2008)

2007
“Measurement of cellulase activity with piezoelectric resonators”
Rojas, Orlando J., Jeong, Changwoo; Turon, Xavier; Argyropoulos, Dimitris S.
Materials, Chemicals, and Energy from Forest Biomass, 954 , 478-494 (2007)
“Oxidative chemistry of Lignin in supercritical carbon dioxide and expanded liquids”
Argyropoulos, D.S., Saquing, Carl D., Gaspar, A.R., Soriano, N.U., Lucia, L. A., Rojas, O.J.
Materials, Chemicals, and Energy from Forest Biomass, 954 , 311-331(2007)
“Lignins as emulsion stabilizers”
Rojas, Orlando J., Bullon, Johnny; Ysambertt, Fredy; Forgiarini, Ana; Salager, Jean-L., Argyropoulos, Dimitris S.
Materials, Chemicals, and Energy from Forest Biomass, 954 , 182-199 (2007)
“What happens to cellulosic fibers during papermaking and recycling? A review”
Hubbe, M.A., Venditti, R.A., Rojas, O.J.
Bioresources , 2(4) , 739-788 (2007)
“Fiber nanotechnology: a new platform for ‘‘green’’ research and technological innovations” (Guest editorial)
Lucia, A.L., Rojas, O.J.
Cellulose, 14 , 539–542(2007).
“Distinctive electrokinetic behavior of nanoporous silica particles treated with cationic polyelectrolyte”
Hubbe, M.A., Rojas, O.J., Lee, S.Y., Park, S., Wang, Y.
Colloids & Surfaces A, 271–278 (2007).
“Charge and the Dry-Strength Performance of Polyampholytes. Part 2. Streaming Potential Analysis”
Wang, Y., Hubbe, M.A., Rojas, O.J., Argyropoulos, D.S., Wang, X., Takao Sezaki,T.
Colloids and Surfaces A, 301 , 23-32 (2007).
“Charge and the Dry-Strength Performance of Polyampholytes. Part 3. Streaming Potential Analysis”
Wang, Y., Hubbe, M.A., Rojas, O.J., Argyropoulos, D.S., Wang, X., Takao Sezaki,T.
Colloids and Surfaces A , 301 , 33-40 (2007).
“Unique Behaviour of Polyampholytes as Dry-Strength Additives”
Hubbe, M.A., Rojas, O.J., Sulic, N., Sezaki, T.
Appita Journal, 60(2) , 106-111 (2007)
“Consequences of the nanoporosity of cellulosic fibers on their streaming potential and their interactions with cationic polyelectrolytes”
Hubbe, M.A., Rojas, O.J., Lucia, L.A., Jung, T.
Cellulose, 14, 655–671 (2007)
“Water treatment in papermaking white water loops using membrane separation techniques”
Bullon, J., Rennola, L., Salazar, F., Hoeger, M., Cardenas, A., Rojas, O.J.
Rev. Tec. Ing. Univ. Zulia., 30, Supl. 1 (2007)

2006
“Colloidal Behavior and Dry-Bonding Performance of Polyampholytes as a Function of their Charge Density”
Hubbe, M.A., Rojas, O.J., Argyropoulos, D.S., Wang, Y., Song, J., Sulic, N., Sezaki, T.
Colloids & Surfaces A , In press (2006).
“Charge and the Dry-Strength Performance of Polyampholytes. Part 1. Handsheets and Bulk Viscosity”
Song, J., Wang, Y., Hubbe, M. A., Rojas, O. J., and Sulic, N., Sezaki, T.
Journal of Pulp and Paper Science, 32(3) , 156-162 (2006).
“The Role of Polyampholyte Charge Density on its Interactions with Cellulose”
Wang, Y., Hubbe, M.A., Takao Sezaki,T., Wang, X., Rojas, O.J., Argyropoulos, D.S.
Nordic Pulp and paper Research Journal, 21(5): 638-645 (2006).
“Salt-induced depression of lower critical solution temperature in surface-grafted neutral thermoresponsive polymer”
Jhon, Y.K., Bhat, R.R., Jeong, C., Rojas, O.J., Genzer, J.
Macromolecular Rapid Communications , 27 , 697-701 (2006).
“Short-range interactions between non-ionic surfactant layers”
Claesson, P.M., Kjellin, M., Rojas, O.J., Stubenrauch, C.
Physical Chemistry Chemical Physics, 8(47) , 5501-5514 (2006).
“Effect of Fenton’s reagent on O/W emulsions stabilized by black liquor”
Tolosa, L.I., Rodríguez-Malaver, A.J., González, A.M., Rojas, O.J.
Journal of Colloid and Interface Science, 294, 182-186 (2006).
“Quantitative 31P NMR Detection of Oxygen-centered and Carbon-centered Radical Species”
Argyropoulos, D.S., Li, H., Gaspar, A.R., Smith, K., Lucia, L.A., Rojas, O.J.
Bioorganic & Medicinal Chemistry, 14, 4017-4028 (2006).
“Control of Tacky Deposits on Paper Machines – A Review”
Hubbe, M.A., Rojas, O.J., Venditti, R. A.
Nordic Pulp and Paper Research Journal, 21(2) , 154-171 (2006).
“Lignin Separation from Kraft Black Liquors by Tangential Ultrafiltration”
Rojas O.J., Song, J., Bullón, J., Argyropoulos, D.S.
Chimica e l’Industria (Italy) , 88(1) , 88-95 (2006).
“Supercritical CO2 Oxidation of Lignin”
Argyropoulos D.S., Gaspar, A., Lucia, L., Rojas, O.J.
Chimica e l’Industria (Italy) , 88(1) , 74-79 (2006).
“Measurement of Cellulase Activity with Piezoelectric Resonators”
Rojas, O.J., Jeong, C., Turon, X., Argyropoulos, D.S.
in Materials, Chemicals and Energy from Forest Biomass, American Chemical Society, In press (2006).
“Lignins as emulsion Stabilizers”
Rojas, O.J., Bullón, J., Ysambertt, F., Forgiarini, A., Salager, J-L., Argyropoulos, D.S.
in Materials, Chemicals and Energy from Forest Biomass, American Chemical Society, In press (2006).
“Oxidative Chemistry of Lignin In Supercritical Carbon Dioxide & Expanded Liquids”
Argyropoulos, D. S., Saquing, C. D., Gaspar, A. R., Soriano, N. U., Lucia, L. A., Rojas, O. J.
in Materials, Chemicals and Energy from Forest Biomass, American Chemical Society, In press (2006).
“New Tools to Screen Enzyme Activity Rojas”
O.J., Turon, X., Argyropoulos, D.S., Kelley, S., Deinhammer, R.
1st LatinAmerican Congress on Biorefineries, Concepcion, Chile, November 21-22, 2006. ,
“Wood as Feedstock in Forest Biorefineries”
Rojas, O.J., Kelley, S.
1st LatinAmerican Congress on Biorefineries, Concepcion, Chile, November 21-22, 2006.
“Salt-induced conformational changes in thermoresponsive polymer brushes”
Jhon, Y.K., Bhat, R.R., Rojas, O.J., Genzer, J.
PMSE Preprints ,94 , 799-800, 2006
“High-Performance Nanofibers and Nanostructures for New Generation Multifunctional Materials”
Montero, G.A., Kim, J., Rojas, O.J.
American Institute of Chemical Engineering AIChE, 2006 Annual Meeting, San Francisco, November 12-17, CA, 2006.
“Cellulase Activity on Thin Films of Cellulose by QCM and SPR”
Turon, X., Spence, K., Rojas, O.J.
American Institute of Chemical Engineering AIChE, 2006 Annual Meeting, San Francisco, November 12-17, CA, 2006.
“Amphoteric Polymers in Papermaking”
Song, J., Rojas, O. J., Hubbe, M.A., Yun, W. Argyropoulos, D.S., Wang, X.
IberoAmerican Congress in Pulp and Paper Research CIADICYP, October 23-27, Santiago/Valdivia, Chile, 2006.
“Cambio en la Afinidad de Ligninas Kraft Acetilada en Sistemas Agua-Solventes Orgánicos”
Ysambertt, F., Rojas, O.J., Argyropoulos, D.S., Bullón, J.
IberoAmerican Congress in Pulp and Paper Research CIADICYP, October 23-27, Santiago/Valdivia, Chile, 2006.
“Separación de Ligninas Mediante Ultrafiltración de Licores Negros Industriales”
Rojas, O.J., Bullón, J., Song, J., Gaspar, A.R; Valdivieso, A., Argyropoulos, D.S., Ysambertt, F.
IberoAmerican Congress in Pulp and Paper Research CIADICYP, October 23-27, Santiago/Valdivia, Chile, 2006.
“Photodegradation of Lignin in Industrial Effluents”
Lucia, L.A., Rojas, O.J., Dahm, A., Malaver-Rodriguez, A.
IberoAmerican Congress in Pulp and Paper Research CIADICYP, October 23-27, Santiago/Valdivia, Chile, 2006.
“Phase Behavior of Lignins and Formulation of Oil-in-Water Emulsions”
Rojas, O.J., Bullón, J., Ysambertt, F., Forgiarini, A., Argyropoulos, D.S., Gaspar, A.R.
9th European Workshop on Lignocellulosics and Pulp, pp. 471-475, Vienna, Austria, August 27-30, 2006.
“Oxygen- and Carbon-Centered Radical Species Quantified by 31P NMR”
Argyropoulos, D.S., Gaspar, A.R.,Li H., Lucia, L., Rojas, O.J.
9th European Workshop on Lignocellulosics and Pulp, pp. 5-8, Vienna, Austria, August 27-30, 2006.
“Structural Modification of Lignins and Uses as Surfactant”
Ysambertt, F., Piña, N., Infante, M., Bravo, B., Chavez, G., Berrio, N., Caceres, A., Bullon, J., Rojas, O.J., Argyropoulos, D.S., Marquez, N.
III Simposio Nacional de Surfactantes y Aplicaciones, Merida, Venezuela, May 31-June 2, 2006.
“Acetylated Kraft Lignin Affinity Changes in Water-Solvent Systems”
Ysambertt, L. F., Rojas, O. J., Argyropoulos, D. S., Bullón, J.
Iberoamerican Congress on Pulp & Paper Research”, Santiago- Chile Oct 23-27, 2006.
“Black Liqour Lignin Separation Using Ultrafiltration Membranes”
Song, J., Gaspar, A., Arsenio, V., Bullón, J., Rojas, O. J., Argyropoulos, D.S., Ysambertt, F.
Iberoamerican Congress on Pulp & Paper Research”, Santiago- Chile Oct 23-27, 2006.
“Quantitative 31P NMR detection of oxygen-centered and carbon-centered radical species”
Argyropoulos, D.S., Li, H., Gaspar, A.R., Smith, K., Lucia, L.A., Rojas, O.J.
American Chemical Society National Meeting, Atlanta, GA, March 26 - 30, 2006.
“Suspoemulsions in the Presence of Polyelectrolytes”
Rojas, R., Schwarz, S., Rojas, O.J., Heinrich, G.
Jülich Soft Matter Days 2006, 14-17 November 2006, Gustav-Stresemann-Institut, Bonn, Germany.
“Acetylated Kraft Lignin Affinity Changes in Water-Solvent Systems ”
Ysambertt, L. F., Rojas, O. J., Argyropoulos, D. S., Bullón, J.
Iberoamerican Congress on Pulp & Paper Research, Santiago- Chile Oct 23-27, 2006.
“Black Liqour Lignin Separation Using Ultrafiltration Membranes”
Song, J., Gaspar, A., Arsenio, V., Bullón, J., Rojas, O. J., Argyropoulos, D. S., Ysambertt, F.
Iberoamerican Congress on Pulp & Paper Research, Santiago- Chile Oct 23-27, 2006.

2005
“Interactions Between Non-Polar Surfaces Coated with the Non-Ionic Surfactant n-Dodecyl-?-D-maltoside ?-C12G2”
Rojas, O.J., Stubenrauch, C., Schlarmann, J., Claesson, P.M.
Langmuir , 21, 11836-11843 (2005).
“Viscoelastic Properties of Isomeric Alkylglucoside Surfactants Studied by Surface Light Scattering”
Rojas, O.J., Neuman, R.D., Claesson, P.M.
Journal of Physical Chemistry B, 109, 22440-22448 (2005).
“Effect of surfactants on Fenton’s reagent-mediated degradation of Kraft black liquor”
Escalante, M., Rodríguez-Malaver, A. J., Araujo, E., González, A. M., Rojas, O. J. Peñaloza, N. and Bullón, J.
Journal Environmental Biology, 26(4) , 709-718 (2005).
“Adsorption of Poly(ethylene oxide)-b-poly(?-caprolactone)Copolymers at the Silica-Water Interface”
Vangeyte, P., Leyh, B., Rojas, O.J., Claesson, P.M., Heinrich, M., Auvray, L., Willet, N., De Clercq, C. and Jérôme, R.
Langmuir, 21, 2930-2940 (2005).
“The Paradox in Papermaking”
Hubbe, M.A. and Rojas, O.J.
Chemical Engineering Education, 39(2) , 146-155 (2005).
“Destintado (Deinking)”
Rojas, O.J.
Publication sponsored by the Organization of American States (OAS), the Interamerican Development Bank (BID) and CENPAPEL, Pereira (Colombia), p. 111, 2005.
“On The Origins of Adhesion in Papermaking Systems”
Rojas O.J., Dedinaite, A., Byrd, M.V. and Hubbe, M.A., Claesson, P.M.
(S.J. I’Anson, Ed.), Vol. 2, p. 1351-1378, Digital Books Logistics Ltd, Peterborough, UK, 2005.
“Fenómenos de Agregación en Suspensiones Papeleras”
Bullón, J.Ramírez, K., Rénnola1, L., Rojas, O.J., Salazar, F.
VIII Congreso Técnico Papelero Venezolano, Maracay, Venezuela, November 30-December 03, 2005.
“Fitting Polymers to the demands of the wet end: a subtle balance of interactions”
Rojas, O.J.
6th Pira International Wet End Chemistry Conference and expert Workshop, Boston October 19 and 20, 2005.
“Supercritical CO2 Oxidation of Lignin for High valued added Products”
Argyropoulos, D.S., Gaspar, A., Lucia, L., Rojas, O.J.
3rd Italian Meeting on Lignin Chemistry, pp. 2-10, L’Aquila, Italy, June 23-24, 2005.
“Lignin Separation from Kraft Black Liquors by Tangential Ultrafiltration”
Rojas, O.J., Song, J., Bullón, J., Argyropoulos, D.S.
3rd Italian Meeting on Lignin Chemistry, pp. 53-61, L’Aquila, Italy, June 23-24, 2005.
“Oxidative chemistry of lignin in supercritical carbon dioxide”
Gaspar, A., Koda, K., Rojas, O.J., Lucia, L., Argyropoulos, D.S.
13th International Symposium on Wood, Fibre and Pulping Chemistry (ISWFPC), Vol. 2: 553-561, Auckland, New Zealand, May 16-19, 2005.
“Following Cellulase Activity by the Quartz Crystal Microbalance Technique”
Jeong, C., Maciel, A.M., Pawlak, J.J., Heitmann, J.A., Argyropoulos, D.S., Rojas, O.J.
13th International Symposium on Wood, Fibre and Pulping Chemistry (ISWFPC), Vol. 2: 495-502, Auckland, New Zealand, May 16-19, 2005.
“Lignins as stabilizers of oil-in water emulsions in the framework of the surfactant affinity difference approach”
Rojas, O.J., Bullón, J., Argyropoulos, D.S.
13th International Symposium on Wood, Fibre and Pulping Chemistry (ISWFPC), Vol. 3: 329-336, Auckland, New Zealand, May 16-19, 2005.
“Fenton Reagent Effect on Black Liquir Stabilized O/W Emulsions”
Tolosa, L.I., Rodríguez-Malaver, A.J., González, A.M., Rojas, O.J.
7th ILI Forum-Proceedings of the International Lignin Institute, Barcelona (Spain), 27-28 April 2005.

2004
“Surfactantes no Destintamento do Paper (Surfactants in Paper Deinking)”
Rojas, O.J.
O Papel, 65(12) , 62 (2004).
“Comparison between interaction forces at air/liquid and solid/liquid interfaces in the presence of non-ionic surfactants”
Stubenrauch, C., Schlarmann, J., Rojas, O.J., Claesson, P.M.
Tenside, Surfactants, Detergents, 41(4) , 174-179 (2004).
“Analytical interferences associated with molecular weight distribution in organic phases of lignin wastes”
Ysambertt, F., Bauza, R., Rojas, O.J., Berrio, N., Márquez N., Salager J.L.
Multiciencias, 4 (1) , 7-15 (2004).
“The Dispersion Science of Papermaking”
Rojas, O.J., Hubbe, M.
Journal of Dispersion Science and Technology, 25(6) , 713-732 (2004).
“Dependency of Polyelectrolyte Complex Stoichiometry on the Order of Addition. 2. Aluminum Chloride and Poly-vinylsulfate”
Chen, J., Hubbe, M., Heitmann, J.A., Argyropoulos, D.S., Rojas, O.J.
Colloids and Surfaces A, 246, 71-79 (2004).
Interactions between Nonpolar Surfaces Coated with the Nonionic Surfactant Hexaoxyethylene Dodecyl Ether C12E6 and the Origin of Surface Charges at the Air/Water Interface
Stubenrauch, C., Rojas, O.J., Schlarmann, J., Claesson, P.M.
Langmuir, 20(12) , 4977-4988 (2004).
“Coadsorption and Surface Forces for Selective Surfaces in Contact with Aqueous Mixtures of Oppositely Charged Surfactants and Low Charge Density Polyelectrolytes”
Rojas, O.J., Claesson, P.M., Berglund, K.D and Tilton, R.D.
Langmuir, 20(8) , 3221-3230 (2004).
“Efecto de la fuerza iónica sobre la estabilidad de las membranas preparadas con ligninas provenientes de licores negros de la industria papelera”
Alayón, M., Valdivieso, A., Bullón, J., Forgiarini, A., Rojas, O.J.
Jornadas de Investigación de la Facultad de Ingeniería. Universidad Central de Venezuela. Caracas. 29 de noviembre al 3 de diciembre 2004.
“Lignin Structural Insights during Pulping and Bleaching”
Argyropoulos, D.S; Rojas, O.J.
Iberoamerican Congress on Pulp and Paper Research 2004 (CIADICYP 2004), November 10-12, Cordoba, Spain, 2004.
“The Paradox in Papermaking”
Rojas, O.J., Hubbe, M.A., Argyropoulos, D.S.
Iberoamerican Congress on Pulp and Paper Research 2004 (CIADICYP 2004), November 10-12, Cordoba, Spain, 2004.
“Colloidal Chemistry in Paper Deinking”
Rojas, O.J.
Iberoamerican Congress on Pulp and Paper Research 2004 (CIADICYP 2004), November 10-12, Cordoba, Spain, 2004.
“Organic and Inorganic Polymers as Retention Aids in Papermaking (Polímeros Orgánicos e Inorgánicos como Agentes Retención en Sistemas Papeleros)”
Mantilla, J., Salazar, F.,Bullón, J., Rojas, O.J.
Iberoamerican Congress on Pulp and Paper Research 2004 (CIADICYP 2004), November 10-12, Cordoba, Spain, 2004.
“Phase Behavior of Lignins from Black Liquors (Comportamiento de Fases de Ligninas de Licores Negros)”
Alayón, M., Padilla, V., Valdivieso, A., García, J., Bullon, J., Forgiarini, A., Rojas, O.J.
Iberoamerican Congress on Pulp and Paper Research 2004 (CIADICYP 2004), November 10-12, Cordoba, Spain, 2004.
“Effect of Fenton’s Reagent on O/W emulsions stabilized by Black Liquors”
Tolosa, L., Rodríguez-Malaver A.J., González, A.M., Orlando J. Rojas, O.J.
Eighth European Workshop On Lignocellulosics and Pulp, Utilization of lignocellulosics and by-products of pulping, Riga / Latvia, August 22 – 25, 2004.
“Stimulus-responsive polymer brushes studied by QCM-D”
Jeong, C., Jhon, Y.K., Bhat, R.R., Genzer, J., Rojas O.J.
4th Q-Sense User Meeting at Rutgers University, NJ, November 4-5, 2004.
“Fenton’s Reagent Effect on Black Liquor Stabilized O/W Emulsions”
Tolosa, L.I., Rodriguez-Malaver, A.J., Gonzalez, A.M. and Rojas, O.J.
Proceedings of the Eight European Workshop on Lignocellulosics and Pulp, p. 441, Riga/Lavia, August 22-25, 2004.

2003
“Black Liquor Lignin Biodegradation by Trametes elegans”
Lara, M.A., Rodríguez-Malaver, A.J., Rojas, O.J., Holmquist, O., González, A.M., Bullón, J., Peñaloza, N., Araujo, E.
Biodeterioration and Biodegradation, 52, 167-173 (2003).
“Foamability and Foam Stability at High Pressures and Temperatures. I. Instrument Validation”
Tyrode, E., Pizzino, A., Rojas, O.J.
Review of Scientific Instruments, 74(5) , 2925-2932 (2003).
“Polyelectrolytes as Adhesion Modifiers”
Claesson, P.M., Dedinaite, A., Rojas, O.J.
Advances in Colloid and Interface Science, 104, 53-74 (2003).
“Química del Papel (Paper Chemistry)”
Rojas, O.J.
ISBN: 958-97336-7-0, Publication sponsored by the Organization of American States (OAS), the Interamerican Development Bank (BID) and CENPAPEL, Pereira (Colombia), p.250. 2003.
“Interactions in thin liquid films”
Schlarmann, J., Strey, R., Stubenrauch, C., Rojas, O.J., Claesson, P.M.
Bayreuth Polymer Symposium and the 41 Biennial Meeting of the German Colloid Society, Bayreuth September, 28-30, 2003.

2002
“Fluorosurfactant Self-Assembly at Solid/Liquid Interfaces”
Rojas, O.J., Macakova, L., Blomberg, E., Emmert, A., Claesson, P.M.
Langmuir, 18(21) , 8085-8095 (2002).
“Fenton’s Reagent Mediated Degradation of Residual Kraft Black Liquor”
Araujo, E., Rodriguez-Malaver, A.J., Gonzalez, A.M., Rojas, O.J., Peñaloza, N., Bullon, J., Lara, M.A., Dmitrieva, N.
Applied Biochemistry and Biotechnology , 97(2) , 91-103 (2002).
“Lung Surfactants Surface Activity”
Bendito, A.T., Rojas, O.J., Valecillos, M.A.
Ciencia, 10(3) , 300-314 (2002).
“Effect of Polyelectrolyte Charge Density on the Adsorption and Desorption Behavior on Mica”
Rojas, O.J., Ernstsson, M., Neuman, R.D., Claesson, P.M.
Langmuir, 18(5) , 1604 –1612 (2002).
“Adsorption of Polyelectrolytes on Mica”
Rojas, O.J.
in Encyclopedia of Surface and Colloid Science Arthur Hubbard (Ed.) p. 517–535, Marcel Dekker, N.Y. (2002).
“Proceso de Floculación con PAC”
Machnitsch, F.M., Rojas, O.J., Neuman, R.D.
XIII ACOTEPAC International Pulp and Paper Congress, Cartagena (Colombia), October 30-November 1, 2002.
“Actividad superficial de las fracciones de ligninas obtenidas por separación con embranes de licores negros de la industria papelera”
Padilla, V., Rangel, M. G., Bullón, J., Cárdenas, A., Rodríguez-Malaver, A., González, A. M., Rojas, O. J.
LII Convención Nacional AsoVAC. Barquisimeto, Noviembre 2002.
“Biodegradación de ligninas de Licores Negros mediante Trametes elegans”
Lara, A., Rodríguez, A., González, A.M., Bullón, J. Holmquist, O., Rojas, O.J.
Jornadas Científico-Técnicas de la Facultad de Ingeniería, Universidad de Los Andes, March 18–22, 2002.
“Surface activity of lignin fractions obtained by membrane-separation technologies of industrial black liquors”
Padilla, V., Rangel, M.G., Bullon, J., Rodríguez-Malaver, A., Gonzalez, A.M., Rojas, O.J.
Iberoamerican Congress on Pulp and Paper Research 2002 (CIADICYP 2002), October 10-12, São Paulo, Brasil, 2002.
“Effect Of Surfactants On The Oxidative Degradation of Black Liquor Treated With Fenton’s Reagen”
Escalante, M., Rodríguez-Malaver, A., Araujo, E., Gonzalez, A.M., Rojas, O.J., Peñaloza, N., Bullón, J., Lara, M.A., Dmitrieva, N.
Iberoamerican Congress on Pulp and Paper Research 2002 (CIADICYP 2002), October 10-12, São Paulo, Brasil, 2002.
“Adsorción de Poliacrilamidas sobre Substratos Papeleros”
Salazar, F., Rojas, O.J.
Iberoamerican Congress on Pulp and Paper Research 2002 (CIADICYP 2002), October 10-12, São Paulo, Brasil, 2002.
“Adsorption of Polymer on Cellulosic Substrates’
Araque, E., Rojas, O.J.
Iberoamerican Congress on Pulp and Paper Research 2002 (CIADICYP 2002), October 10-12, São Paulo, Brasil, 2002.
“Formulación de surfactantes y especies alcalinas en el destintado por flotación”
Aguilera, A., Rojas, O.J., Mogollón, G., Gutierrez, I., Gomez, L.
Iberoamerican Congress on Pulp and Paper Research 2002 (CIADICYP 2002), October 10-12, São Paulo, Brasil, 2002.

2001
“Desorption of Low-Charge-Density Polyelectrolyte Adlayers in Aqueous Sodium n-Dodecyl Sulfate Solution”
Rojas, O.J., Neuman, R.D., Claesson, P.M.
Journal of Colloid and Interface Science, 237, 104-111 (2001).
“Adsorcion de Poliacrilamida sobre Sustratos Solido”
Araque, E., Rojas, O.J.
LI Convención I de ASOVAC, San Cristobal, Venezuela, November 18–23, 2001.
“Surfactantes en Solución Acuosa”
Rojas, O.J.
II Simposio Nacional de Surfactantes y Aplicaciones, Mérida, February 15-18, 2001.
“Interacciones Surfactante-Polímero”
Rojas, O.J.
II Simposio Nacional de Surfactantes y Aplicaciones, Mérida, February 15-18, 2001.

2000
“X-Ray Photoelectron Spectroscopy in the Study of Polyelectrolyte Adsorption on Mica and Cellulose”
Rojas, O.J., Ernstsson, M., Neuman, R.D., Claesson, P.M.
Journal of Physical Chemistry B, 104(43) , 10032-10042 (2000).
“Adsorción de Polielectrolitos de Baja Densidad de Carga sobre Substrato Sólidos y Fuerzas de Interacción Superficial”
Rojas, O.J., Claesson, P.M., Neuman, R.D.
Ciencia e Ingeniería, 21(2) , 36-42 (2000).
“Biodegradación de Ligninas de Licores Negros”
Lara, M.A., Rodríguez, A., González, A.M., Bullón, J., Holmquist, O., Rojas, O.J.
VII Congreso Técnico Papelero Venezolano, Maracay, December 1 –2, 2000.
“PAC como Barredor de Basura Aniónica”
Rodríguez, C., Machnitsch, F., Rojas, O.J.
VII Congreso Técnico Papelero Venezolano, Maracay, December 1 –2, 2000.
“Adsorción de Poliacrilamidas sobre Substratos Papeleros”
Salazar, F., Rojas,O.J.
VII Congreso Técnico Papelero Venezolano, Maracay, December 1 –2, 2000.
“Adsorción de Polímeros Solubles en Superficies Minerales y Fuerzas de Interacción”
Rojas, O.J. .
III Jornadas de Investigación Básica Orientada en Exploración y Producción” INTEVEP, Los Teques, November 17, 2000.

1999
“Adsorption of Polysaccharide Wet-End Additives in Papermaking Systems”
Rojas, O.J., Neuman, R.D.
Colloids and Surfaces A, 155, 419-432 (1999).
Surface Forces and Measuring Techniques”
Fröberg, J.C., Rojas, O.J., Claesson, P.M.
International Journal of Mineral Processing, 56, 1–30 (1999).
“Papermaking Retention Mechanism”
Rojas, O.J.
IX Latinamerican Pulp and Paper Congress /IX Intl. Congress ACOTEPAC, June 2–4, Medellin (Colombia), 1999.
“Dispersed Systems Physical-Chemistry Formulation – From Art to Science”
Salager, J.L., Anderez, J., Anton, R., Bracho, C., Briceño, M., Matilde, M. and Rojas, O.J.
IV Venezuelan Chemistry Congress SVQ, Feb. 7–11, Mérida (Venezuela), 1999.

1998
“The Effect of Salt Concentration on Adsorption of Low-Charge-Density Polyelectrolytes and Interactions between Polyelectrolyte-Coated Surfaces”
Rojas, O.J., Claesson, P.M., Muller, D., Neuman, R.D.
Journal of Colloid and Interface Science, 205, 77-88 (1998).
“Paper Deinking: Art or Science?”
Rojas, O.J., Bullon, J.
6th Venezuelan Pulp and Paper Conference, Nov. 19–21, Maracay (Venezuela), 1998.
“Polymer Adsorption in Cellulosic Systems”
Rojas, O.J., Claesson, P.M., Neuman, R.D.
6th Venezuelan Pulp and Paper Conference, Nov. 16–21, Mérida (Venezuela), 1998.
“Low Charge Density Polyelectrolyte Adsorption on Solid Surfaces and Surface Force Interactions”
Rojas, O.J., Claesson, P.M., Neuman, R.D.
Engineering School Scientific Workshop, Nov. 19–21, Mérida (Venezuela), 1998.
“Zeta Potential and Ionic Charge Demand in Papermaking”
Rojas, O.J., Neuman, R.D., Peña, V.M.
3rd Venezuelan Congress on Chemical Applications, Maracay (Venezuela), 1998.

< 1997
”Avances en el Reciclado del Papel”
Rojas, O.J.
Celulosa y Papel de Venezuela, 9(16) , 22-23 (1997).
“Surface Activity of Bagasse Lignin Derivatives Found in the Spent Liquor of Soda Pulping Plants”
Rojas, O., Salager, J.L.
Tappi Journal, 77(3) , 169-174 (1994).
“Vapor-Liquid Equilibrium Computer System”
Forgarini, A., Rojas, O.J., Belandria, J.
Revista Información Tecnológica, 4(2) , 35–38 (1993).
“Delignification of Sugar-cane Bagasse by Soda Pulping Process”
Rojas, O.J., Uzcategui, W.
Investigación y Técnica del Papel, 29(113) , 680-695 (1992).
“Pinus Caribaea var Hondurensis Fiber Characterization for Papermaking from Nirgua Plantation”
Peña, V., Rojas, O.J.
Celulosa y Papel de Venezuela, 3(6) , 6-15 (1992).
“Interfacial Phenomena and Surfactants in the Pulp and Paper Industry”
Salager, J.L., Peña, V., Rojas, O.J.
Celulosa y Papel de Venezuela, 3(5) , 50-61 (1991).
“Computer-Based-System for Mass and Energy Balances in CTMP Mills”
Rojas, O.J., Villabona, J.
Ciencia e Ingeniería, 20(1) , 67-80 (1990).
“Kinetic Model for the Kraft Digestion of pinus caribaea”
Rojas, O.J., Monsalve, A., Peña, V.
Celulosa y Papel de Venezuela, 1(1) , 7-12 (1988).
“Interactions of Cellulose Surfaces: Scanning Probe Microscopy Investigation”
Neuman, R.D., Willing, G., Rojas, O.J., Taleb, I., Northcutt, T.
1997 Engineering/Papermakers Conference, Nashville, TN, October 1997.
“Interparticle Forces in Papermaking”
Neuman, R., Rojas, O.J.
Vth Venezuelan Pulp and Paper Conference, p.1, Maracay (Venezuela), Nov. 20-23, 1996.
“Adsorption of Guar Gums on Cellulosic Substrates”
Rojas, O.J., Neuman, R.
VIII Latinamerican Pulp and Paper Congress, p. 239, Medellin (Colombia), 1996.
“Properties of Lignin Derivative Surfactants Found in the Spent Liquor of Wood Pulping Plants”
Rojas, O.J., Bauza, R., Ysambertt, F., Salager, J.L
Ixth European Interface and Colloid Soc. Conference, Barcelona (Spain), Sept. 1995.
“Utilization of Guar Gums for White-Water BOD Reduction”
Rojas, O.J., Neuman, R.D., Mills, R.J.
1995 Tappi Papermakers Conference, Chicago (U.S.A.), April 26, 1995: 145-152, Tappi Press.
“Lignin: Applications and Surface Activity Evaluation”
Rojas, O.J., Salager, J.L.
III Pulp and Paper Venezuelan Congress, Maracay (Venezuela), Nov. 1992.
“Soda Sugar cane Bagasse Delignification”
Rojas, O.J., Uzcategui, W.
III Pulp and Paper Venezuelan Congress, Maracay (Venezuela), Nov. 1992.
“Interfacial Phenomena and Surfactants in the Pulp and Paper Industry”
Salager, J.L., Rojas, O.J.
VI Pulp and Paper Latin American Congress, Torremolinos (Spain), June 1992.
“Surfactant Recovery from Spent Black Liquor”
Rojas O.J.
V Intl. Congress ACOTEPAC, Medellin (Colombia), Feb. 1992.
“Viscosity Control in Cellulose Bleaching Processes”
Rojas, O.J.
IV Intl. Congress ACOTEPAC, Cali (Colombia), Feb. 1991.
“Surfactants in the Pulp and Paper Industry”
Salager, J.L., Rojas, O.J.
II Pulp and Paper Natl. Congress, Valencia (Venezuela), Nov. 1990.
“Computer-Based-System for Mass and energy Balance in CTMP Plants”
Rojas, O.J., Villabona, J.
V Pulp and Paper Latin American Congress, Santiago de Chile (Chile), Sept. 1989.
“Kraft Digestion Model and Simulation”
Rojas, O.J., Monsalve, A.
III Pulp and Paper Latin American Congress, Concepción (Chile), Aug. 1987.




image
image