Conference Publications

Courses, Publications and Presentations

CONFERENCE PUBLICATIONS/PRESENTATIONS

PLENARY/KEYNOTE PRESENTATIONS

(*Asterisk Signifies the Speaker)

9. Keynote Lecture, “Supercritical CO₂ Oxidation of Lignin for High Value Added Products” 3^rd Italian Meeting on Lignin Chemistry, June 23-24, Universita Degli Study, L’Auila, pp. 2-11, 2005.

8. Plenary Lecture “Understanding the Role of Mediators in the oxidation of Kraft Lignin by Laccase”;Iberoamerican Congress on Pulp & Paper Research, Madrid-Cordoba, Nov. 10-12, 2004

7. Plenary Lecture ”The Signifcance of Lignin Research to the Pulp and Paper Industry” COST Action E41 “Analytical Tools with Applications to Wood and Pulping Chemistry”Dipoli Confernce Centre, Helsinki, Finland , Oct 20,2004.

6. Keynote Lecture,, “New Lignin Insights into Pulping and Bleaching.”, 2^nd International Symp. Emerging Technologies of Pulping and Papermaking, Guangzhou, PR., China, Oct. 9-11, 2002.

5. Keynote Lecture,. “Recent Advances in Wood Chemistry.”, Seventh Brazilian Symposium on the Chemistry of Lignins and Other Wood Components, Uro Minas Hotel, Bello Horizonte, PR. Brazil, Sept. 1- 4 (2001), Oral Presentations Volume, pp. 43-51.

4. Distinguished Lecture Series, University of British Columbia, Dept. of Chemical Engineering, “Recent Advances in Lignin Chemistry,” Advanced Papermaking Initiative, November 23, 2001.

3. Plenary Lecture, From Organic Chemistry to Organic Chemical Technologies, A Symposium In Memory of Professor G. Valkanas “New Lignin Reactions and Future Research Directions,” National Technical University of Athens, February 21, 2001.

2. Otaniemi Symposium on Lignin Chemistry 1999, VTT Chemical Technology, Espoo, Finland, Plenary Lecture, “Understanding Pulping, Bleaching and Yellowing Using Novel NMR Techniques; A Review of our Work at McGill.” November 9, 1999.

1. Plenary Lecture, “Fundamental NMR Studies of Lignins: Emerging Answers to Issues of Concern in Relation to Pulping, TCF Bleaching and Yellowing.”, Fifth Brazilian Symposium on the Chemistry of Lignins and Other Wood Components/Workshop of the International Energy Agency on Biotechnology Applied to Lignocellulosic Materials, Burbon Hotel, Curitiba,Brazil, Aug. 31-Sept.4 1997.

CONFERENCE PUBLICATIONS/PRESENTATIONS

(*Asterisk Signifies the Speaker)

2007

176. Anderson Guerra, Armindo Gaspar, Sofia Contreras, Lucian A. Lucia, and Dimitris S. Argyropoulos*. On The Propensity of Lignin to Associate. 14^th ISWFPC / 12th APPW 25-28 June 2007, Durban, South Africa.

175. Anderson Guerra, Ilari Filpponen, Lucian A. Lucia, and Dimitris S. Argyropoulos*. On The Virtues of the Enzymatic Mild Acidolysis Lignin Isolation Protocol. 14^th ISWFPC / 12th APPW 25-28 June 2007, Durban, South Africa.

174. Ilari Filpponen, Anderson Guerra, Abdul Hai, Lucian A. Lucia, and Dimitris S. Argyropoulos. Spectral Monitoring of the Formation and Degradation of Polysulfide Ions in Alkaline Conditions. 14^th ISWFPC / 12th APPW 25-28 June 2007, Durban, South Africa.

173. Xingwu Wang, Ilari Filpponen*, Lucian A Lucia, and Dimitris S. Argyropoulos. “Cellulose Nanocrystals as Scaffolds for Nanodevices, Part I: Development of the Essential Chemistry. 2007 International Conference on Nanotechnology For the Forest Products Industry 13 – 15 June 2007, Knoxville, Tennessee, USA.

172. Ilari Filpponen*, Xingwu Wang, Lucian A. Lucia, Dimitris S. Argyropoulos, “Effect of reaction conditions on the formation and thermal behavior of cellulose nanocrystals” - 233rd ACS National Meeting, Chicago, IL, March 25-29, 2007, , Paper #1058041.

171. Armindo R. Gaspar, I. Sofia Contreras, Anderson Guerra, Lucian A. Lucia, and Dimitris S. Argyropoulos

“Association Phenomena of Lignin Isolated from Wood Investigated by Light Scattering” - 233rd ACS National Meeting, Chicago, IL, March 25-29, 2007, Paper #106384.

170. Xavier Turon, Orlando J. Rojas, Junlong Song, Kelley L Spence¹, Dimitris S. Argyropoulos, Randall Deinhammer., “Model films of cellulose to monitor enzyme activity ” - 233rd ACS National Meeting, Chicago, IL, March 25-29, 2007, Paper #1062894.

169. L Jooyoun Kim, Gerardo A. Montero, Xingwu Wang, Dimitris S. Argyropoulos, Jan Genzer, Juan P. Hinestroza, Orlando J. Rojas, “Cellulose-Loaded Polystyrene Composites: Effect of Sorbitan Monostearate and Production of Nanofibers and Nanostructures for New Generation Multifunctional Materials” - 233rd ACS National Meeting, Chicago, IL, March 25-29, 2007, . Paper #1063072

2006

168. Lucia, L. A*., Filpponen, I., Guerra, A., Ban, W., Argyropoulos, D., S. ”Kinetic & Molecular Features of Green Liquor –Modified Versus Conventional Krafty Pulping” 3^rd International Symposium on Emerging Technologies of Pulping and Papermaking, Guangzhou, China, pp. 18-24, November 8-10, 2006

167. Liu* , Y, Zhan H., Jiachuan, C., Argyropoulos, D. S., Fu, Q., “Lignin Structural Analysis of the Triploid of Chinese Aspen” 3^rd International Symposium on Emerging Technologies of Pulping and Papermaking, Guangzhou, China, pp. 108-111, November 8-10, 2006

166. Ysambertt*, F. Piña, N., Infante, M., Bravo, B., Chávez, G., Berrío, N., Cáceres, A., Bullón, J., Rojas, O. J., Argyropoulos, D. S., Gaspar, A. R. , Márquez, N., ”Structural Modification of Lignins and their Potential as Surfactants” Iberoamerican Congress on Pulp & Paper Research, Sandiago- Chile Oct 23-27, 2006.

165. Song, J., Rojas*, O. J., Hubbe, M., Wang Wu, Argyropoulos, D. S., Wang, X., ”Amphoteric Polymers in Papermaking” Iberoamerican Congress on Pulp & Paper Research, Sandiago Chile Oct 23-27, 2006.

164. Saladino, R., Caponi, M. C., Argyropoulos, D. S., Crestini*, C., "Heterogeneous Methyltrioxo Rhenium (MTO)/H2O2 Systems for the Oxidation of Lignin & Model Compounds” 9^th European Workshop for Lignocellulosics & Pulp, Vienna Austria August 27^th -31^st , pp. 72-75, 2006

163. Rojas*, O. J., Bullón, J., Ysambertt, F., Forgiarini, A., Argyropoulos, D. S., Gaspar A., R., ”Phase Behavior of Lignins and Formulation of Oil in Water Emulsions” 9^th European Workshop for Lignocellulosics & Pulp, Vienna Austria August 27^th -31^st 2006

162. Filpponen, I., Guerra, A., Hai, A. A., Lucia, L. A*., Argyropoulos, D., S. ”Understanding the Efficacy of Green Liquor Impregnation ” 9^th European Workshop for Lignocellulosics & Pulp, Vienna Austria , August 27^th -31^st 2006

161. Argyropoulos, D., S., Li, H., Gaspar, A*., Lucia, L., A., ”Oxygen and Carbon Centered Radical Species Quantified by ³¹P NMR” 9^th European Workshop for Lignocellulosics & Pulp, Vienna Austria , August 27^th -31^st 2006.

160. Gaspar* A., R., Saquing, C., D., Soriano, N., U., Jr., Lucia, L. A., Argyropoulos, D. S., ”Lignin Oxidation & Fragmentation in Supercritical Fluids and Expanded Liquids” 9^th European Workshop for Lignocellulosics & Pulp, Vienna Austria , August 27^th -31^st 2006.

159. Anderson Guerra, Ilari Filpponen, Lucian Lucia, Dimitris S. Argyropoulos* ”Different Wood Scpecies Offer Different Yields, Lignin Structures and Molecular Weights when Isolated with the Same Method” 9^th ,European Workshop for Lignocellulosics & Pulp, Vienna Austria , August 27^th -31^st 2006.

158. Tarja, Tamminen* , Hanna Maenpaa, Erja Kentaa, Bo Hortling, Taina Ohra-aho, Dmtry Evtuguin, Dimitris Argyropoulos, and Anderson Guerra, “Integrated Sample Analyses/KCL Data”, Cost E41 on “Analytical Tools with Applications to Wood and Pulping Chemistry” Grenoble France April 12^th -13^th 2006.

157. Argyropoulos,*, D. S., Guerra, A., Xavier, A., Baumberger, S., Evtuguin, “Yield, Functional Groups & Molecular Weights, for Cost E41 Lignins”, Cost E41 on “Analytical Tools with Applications to Wood and Pulping Chemistry” Grenoble France April 12^th -13^th 2006.

156. Carmen-Michaela Popescu, Mihai Brebu, Maria Christin Popescu, Storleiu, A., Gh. Singurel, Cornelia Vasile*, D. S. Argyropoulos, S. Wilfor, , T. “Spectral & Thermal Characterization of the Integrated Cost E41 Samples” COST Action E41 “Analytical Tools with Applications to Wood and Pulping Chemistry” Grenoble France April 12^th -13^th 2006.

155. Ohra-aho,*, T., Argyropoulos, D. S., Evtuguin, D. Tamminen, “Characterization of Lignin in Spruce TMP, Eucalyptus Chips and Kraft Pulp by Analytical Pyrolysis-GC/MS” 9^th European Workshop for Lignocellulosics & Pulp, Vienna Austria , August 27^th -31^st 2006.

154. Ysambertt,* L. F. , Rojas, O. J., Argyropoulos, D. S., Bullón, J. “Acetylated Kraft Lignin Affinity Changes in Water-Solvent Systems ” Iberoamerican Congress on Pulp & Paper Research, Sandiago- Chile Oct 23-27, 2006

153. Song, J., Gaspar, A., Arsenio, V., Bullón, J., Rojas, O. J., Argyropoulos, D. S., Ysambertt*, F., “Black Liqour Lignin Separation Using Ultrafiltration Membranes” Iberoamerican Congress on Pulp & Paper Research, Sandiago- Chile Oct 23-27, 2006.

152. Saquing^*, C.D., Soriano Jr., N.U., Gaspar, A.R., Lucia, L.A., Rojas, O.J., Argyropoulos, D.S. “Oxidation of lignin in supercritical fluids and expanded liquids” American Chemical Society Meeting & Exposition, Atlanta, Georgia, March 26 - 30, 2006.

151. Argyropoulos, D.S., Li*, H., Gaspar, A.R., Smith, K., Lucia, L.A., Rojas , O.J. “Quantitative ³¹P NMR Detection of Oxygen-centered and Carbon-centered Radical Species”, American Chemical Society Meeting & Exposition, Atlanta, Georgia, March 26 - 30, 2006.

150. Adamopoulos*, L., Hampikian, G., Heitmann, J., Lucia,L.A. Argyropoulos, D.S. “Stereoselectivity, Kinetics and Chain Length Effects Governing the Formation and Antimicrobial Activity of Sugar Esters of Fatty Acids”, American Chemical Society Meeting & Exposition, Atlanta, Georgia, March 26 - 30, 2006.

149. Wang*, X., Devineni, N., Clark, R., Rojas, O., Lucia, L., Argyropoulos, D.S. “Formation and Study of Cellulose Nanocrystals from Hydrochloric Acid Hydrolysis”, American Chemical Society Meeting & Exposition, Atlanta, Georgia, March 26 - 30, 2006.

148. Filpponen *,I., Hai, AKM, Lucia, L.A., Argyropoulos, D.S. ”Understanding the efficacy of green liquor pretreatment by using etherified lignin model compounds”, American Chemical Society Meeting & Exposition, Atlanta, Georgia, March 26 - 30, 2006.

147. Fu*, Q., Argyropoulos, D.S., Lucia, L. Tilotta, D. “Pyrolysis of Copper-Chromium-Arsenic Treated Wood”, American Chemical Society Meeting & Exposition, Atlanta, Georgia, March 26 - 30, 2006.

146. Guerra*, A., Xavier, A., Lucia, L., Argyropoulos, D. S. “The effects of milling conditions on the structure of enzymatic acid lignin”, American Chemical Society Meeting & Exposition, Atlanta, Georgia, March 26 - 30, 2006.

145. Chong*, C. W., Rojas, O., Argyropoulos, D.S. “Degradation of Nano-Scale Films of Cellulose and Lignin by Using Piezoelectric Resonators”, American Chemical Society Meeting & Exposition, Atlanta, Georgia, March 26 - 30, 2006.

144. Hai*, A. K. M., Filpponen, I., Guerra, A., Xavier, A., Lucia, L.A., Argyropoulos, D.S. “A Kinetic Study of the Formation and Degradation of Inorganic Polysulfide Species: Quantitative Analysis by 1H-NMR Spectroscopy”, American Chemical Society Meeting & Exposition, Atlanta, Georgia, March 26 - 30, 2006.

143. Wang, Y., Hubbe,* , M. A., Sezaki, T., Wang, X., Rojas, O. J., Argyropoulos, DS. S., “The Role of Polyampholyte Charge Density on its Interactions with Cellulose”, International Paper and Coating Chemistry Symposium, KTH, Stockholm, Sweden, June 7-9, 2006.

2005

142. Jurasek*, L. and Argyropoulos, D. S., “Reactivity of Lignin Models with Oxygen-Centered Radicals: Computation of Proton and Electron Affinity and O-H Bond Dissociation Energy”, 1^stApplied Molecular Modelling Pulp & Paper Symposium, McGill University, Montreal , Canada , August 24-26 (2005) Invited Lecture.

141. Jurasek*, L. and Argyropoulos, D. S., “Modeling of the Effect of Lignin Crosslinking on its Reactivity”, 1^stApplied Molecular Modelling Pulp & Paper Symposium, Montreal , Canada , August 24-26 (2005), Invited Lecture.

140. Rojas*, O., J., Hinestroza, J. P., Genzer, J., Argyropoulos D. S., “Cellulose Based Materials in Biocomposite Manufacture” 14 Intl. Materials Research Congress, Cancun, Mexico, August 21-25 (2005)

139. Saladino*, R., Pagliaccia, T., Fiani, C., Neri, V., Botta, G., Argyropoulos, D. S., “Cellulose Watse Valorisation by Novel Heterogeneous MethylRhenium Trioxide Catalysts” 3^rd Italian Meeting on Lignin Chemistry, June 23-24, Universita Degli Study, L’Auila, pp. 12-15, 2005.

138. Sala*, M. Strlič, M., Kolar, J., Argyropoulos, D. S., “ A Study of Chemiluminescence During the Oxidation of Milled Wood Lignin” 3^rd Italian Meeting on Lignin Chemistry, June 23-24, Universita Degli Study, L’Auila, pp. 122-125, 2005.

137. R Kelley* L. Spence , O.J. Rojas, D.S. Argyropoulos “Development of Cellulose Thin Films for Studies in Surface Chemistry ”, 14th Annual NC State Undergraduate Research Symposium, North Carolina State University, April 25, 2005; Outstanding Project , Sigma Xi citation at University Honors Convocation 2005.

136. Rojas*, O. J., Song, J., Bullon, J., Argyropoulos, D. S., “Lignin Separation from Kraft Black Liquors by Tangential Ultrafiltration” Italian Lignin Chemistry Symposium, Italic III, June 23-24, Universita Degli Study, L’Auila 2005,

135. Argyropoulos*, D. S., Lucian, L. Rojas, O. “Value Added Products from Lignin Oxidation”Italian Lignin Chemistry Symposium, Italic III, June 23-24, Universita Degli Study, L’Auila 2005,

134. Ban, W., Song, J., Argyropoulos, D. S., Lucian, L.* “Improving the Functionality of Starch Films with Biopolymers” Italian Lignin Chemistry Symposium, Italic III, June 23-24, Universita Degli Study, L’Auila 2005,

133. Argyropoulos, D. S.*, Lucia A. L. “ A Detailed Examination of Lignin During Pulping & Bleaching” , 2005, AIChE Spring National Meeting, Hyatt Regency, Atlanta, GA, April 10-14.

132. Lucia A. L.* W.Ban, Argyropoulos, D. S., “ Chemical Extration of Wood Hemicelluloses; An Invaluable New Proposition for the Pulp & Paper Industry” , 2005, AIChE Spring National Meeting, Hyatt Regency, Atlanta, GA, April 10-14.

131. Lucia A. L.* W.Ban, Argyropoulos, D. S., “ A Quantititaive Comparison of the Kinetic Features of Green Liquor- Modified, versus Conventional Kraft Pulping” , 2005, AIChE Spring National Meeting, Hyatt Regency, Atlanta, GA, April 10-14.

130. Argyropoulos, D. S., and Gaspar, A*, “Oxidation of Lignin in Supercritical Carbon Dioxide” 229^h, American Chemical Society National Meeting, San Diego, CA., March 13-17, 2005, San Diego, CA

129. Argyropoulos, D. S.,* “Supercritical Chemical Technologies for Biomass Conversion” 7^th, Forum of the International Lignin Institiute, April 26-28, pp. 95-99, 2005, Barcelona, Spain.

128. Gaspar, A., Koda. K, Rojas, O., Lucian, L. and Argyropoulos* D. S. , “Oxidative Chemistry of Lignin in Supercritical Carbon Dioxide” 13^th, International Symposium on Wood Fiber & Pulping Chemistry , May 16-19, 2005, Auckland New Zealand, 2005.

127. Argyropoulos*, D. S. ,, Hou, Y., Ganesaratnam, R., Harpp, D., N., and K. Koda, “Quantitative ¹H NMR of Polysulfide Solutions” 13^th, International Symposium on Wood Fiber & Pulping Chemistry , May 16-19, 2005, Auckland New Zealand, 2005.

126. Koda, K., Gaaspar, A., Liu, Y. Argyropoulos, D. S. , “Molecular Weight - Functional Group Relations in Softwood Residual Kraft Lignins” 13^th, International Symposium on Wood Fiber & Pulping Chemistry , May 16-19, 2005, Auckland New Zealand, 2005.

125. Jeong, C. W., Maciel, A. M., Pawlak, J.J., Heitmann, J., Argyropoulos, D. S., and Rojas*, O., “Following Cellulase Activity by the Quartz Crystal Microbalance Technique ” 13^th, International Symposium on Wood Fiber & Pulping Chemistry , May 16-19, 2005, Auckland New Zealand, 2005

124. Rojas*, O., Bullon, J., Argyropoulos, D. S. ‘Lignins as Stabilizers of Oil-in-Water Emulsions in the Framework of the Surfactant Affinity Difference Approach” 13^th, International Symposium on Wood Fiber & Pulping Chemistry , May 16-19, 2005, Auckland New Zealand, 2005

2004

123. Rojas*, O., Hubbe, M., Argyropoulos, “The Paradox in Papermaking”, Iberoamerican Congress on Pulp & Paper Research, Madrid-Cordoba, Nov. 10-12, 2004

122. Argyropoulos*, D. S., and Rojas, O. “Lignin Structural Insights During Pulping & Bleaching”, Iberoamerican Congress on Pulp & Paper Research, Madrid-Cordoba, Nov. 10-12, 2004

121. Liu Y*., Zhan H., Chen J., Argyropoulos, D. S. TCF Bleaching of Triploid of Chinese Aspen Pulp2nd ISTPPBFP International Symposium on Technologies of Pulping, Papermaking and Biotechnology on Fiber Plants, October 12-14; 2004 Nanjing, China .

120. L. J. Eason* II, R. A. Ernest*, C. M. Foess*, R. A. Venditti, D. S. Argyropoulos “Conversion of Deinking Sludge to Fermentable Glucose”, 13th Annual NC State Undergraduate Research Symposium, North Carolina State University, April 22, 2004; Outstanding Project , Sigma Xi citation at University Honors Convocation 2004.

2003

119. Ermest*, R. A., Venditti, R. A., Gilbert , R.D. “Characterization of Paper Recycling Deinking Sludge for Potential Utilization in the Production of Ethanol” NSF Undegraduate Experience Student Conference, July (2003).

118. Argyropoulos*, D.S. “Can Oxygen Delignification be Activated and the Pulp Protected?” Virginia Carolina Tappi Meeting , Nov. 19 (2003).

118. Argyropoulos*, D.S. “Studies on the Mechanism on the Lacasse Mediator System; Where Do We Go From Here?” Invited Lecture , Cost 23 Action , Biotechnology in the Pulp and Paper Industry, Tuscia University, Vierbo, Italy, 10-12 Nov. (2003).

117. Akim, L., Suchi, M., and Argyropoulos*, D. S., “Nitrogen Centered Activators of Oxygen Delignification.” Tappi Fall Conference, Chicago, Paper no. 48-1 Oct. 26-30 (2003).

116. Adamopoulos, L. , Tomovic, M., and Argyropoulos*, D. S., “The Use of Borax in Peroxide Reinforced Oxygen Delignification of Softwood Kraft Pulp.” Tappi Fall Conference, Chicago, Ill. Paper no. 48-3 Oct. 26-30 (2003).

115. Argyropoulos*, D. S., and Smith “Quatitative ³¹P NMR Detection of Radical Species; A New Tool for the Lignin Chemist.” 12^th International Symposium on Wood and Pulping Chemistry, Oral Presentations volume I, pp. 167-170, June 9-12, (2003).

114. Wu, Shubin, Argyropoulos*, D. S., “An Improved Method for Isolating Lignin in High Yield and Purity.” 12^thInternational Symposium on Wood and Pulping Chemistry, Poster presentations volume III, pp. 31-34, June 9-12, (2003).

113. Jurasek, L. ,Argyropoulos*, D. S. “Computations of Proton and Electron Affinities of O-H Bond Dissociation Energies.” 12^thInternational Symposium on Wood and Pulping Chemistry, Poster presentations volume II, pp. 35-38, June 9-12, (2003).

112. Claudia Crestini, Lubo Jurasek, Dimitris, S. Argyropoulos, the Mechanism of the Laccase-Mediator System in the Oxidation of Lignin.” Italian Meeting on Lignin Chemistry, Italic 2, University of Milan, February 20-21, (2003).

2002

111. Wu, Shubin, Argyropoulos, D. S., “An Improved Method for Isolating Lignin in High Yield and Purity.” 2^nd International Symp. Emerging Technologies of Pulping and Papermaking, Guangzhou, PR., China, Oct. 9-11, pp. 99-109, (2002).

110. Argyropoulos* D. S. “New Lignin Insights into Pulping and Bleaching.” Keynote Lecture, 2^nd International Symp. Emerging Technologies of Pulping and Papermaking, Guangzhou, PR., China, Oct. 9-11, 2002.

109. Argyropoulos*, D. S., Crestini C., Smith , K. “Toward an Understanding of the Role of Hydroxybenzotriazole in the Laccase Oxidation of Residual Kraft Lignin.” 8th International Symposium on Activation of Dioxygen & Homogeneous Catalytic Oxidation, Emory University, Atlanta, Georgia, USA, June 2-7, (2002).

108. Smith* , K., Argyropoulos, D. S., “Quantitative Detection of Radical Species in Pulp Bleaching Operations.” International Pulp Bleaching Conference, Portland Oregon May 19-23, (2002). pp. 97-104.

107. Crestini C., Argyropoulos*, D. S., Smith , K. and Viikari, L. “Mechanism of Lignin and Model Compound Oxidation by the Laccase-Mediator System.” 223^rdACS National Meeting, Orlando, Florida, April 7-11, (2002), Cellulose Paper and Textile Division, Paper No. 16.

106. Smith*, K., Argyropoulos, D. S., “Quantitative Detection of Radical Species Involved in Bleaching.” 88^thPaptac Annual Meeting, Jan 29-31, Montreal, Quebec, (2002).

105. Argyropoulos*, D. S., Akim, L. and Ahvazi, B. “Salient Reactions in Lignin During Pulping and Bleaching.” 88^th Paptac Annual Meeting, Montreal, Quebec, Jan 29-31, (2002), pp. A-165-172.

2001

104. Argyropoulos, D. S*. “Recent Advances in Wood Chemistry.” Keynote Lecture, Seventh Brazilian Symposium on the Chemistry of Lignins and Other Wood Components, Uro Minas Hotel, Bello Horizonte, PR. Brazil, Sept. 1- 4 (2001), Oral Presentations Volume, pp. 43-51.

103. Argyropoulos*, D. S., Jurasek, L., Krištofová, L., Xia, Z., Sun, Y., Paluš, P., “On the Abundance and Reactivity of Dibenzodioxocins in Softwood Lignin.” 11^thInternational Symposium on Wood and Pulping Chemistry, Oral presentations volume I, pp. 175-179, June 11-14, (2001), Nice, France.

102. Jurasek*, L., KriÓtofov<, L., Sun, Y., Argyropoulos, D. S., “Understanding the Oxidative Degradation of Condensed Structures in Kraft lignin.” 11^thInternational Symposium on Wood and Pulping Chemistry, Poster presentations volume III, pp. 483-486, June 11-14, (2001), Nice, France.

101. Jääskeläinen*, A. S., Sun, Y., Argyropoulos, D. S., Tamminen, T., Hortling, B., “The Effect of Isolation Method on the Chemical Structure of Residual Lignin.” 11^thInternational Symposium on Wood and Pulping Chemistry, Oral presentations volume I, pp. 239-243, June 11-14, (2001), Nice, France.

100. Crestini* C., Argyropoulos, D. S., and Viikari, L. “Oxidation of Lignin by the Laccase-Mediator System: The Role of 1-Hydroxybenzotriazole.” 11^thInternational Symposium on Wood and Pulping Chemistry, Oral presentations volume I, pp.317-320 , June 11-14, (2001), Nice, France.

99. Argyropoulos, D. S., Sun*, Y., Palus, E. “Isolation of Residual Kraft Lignin in High Yield and Purity Using a Novel Enzymatic-Acid Hydrolysis Method.” 11^th International Symposium on Wood and Pulping Chemistry, Poster presentations volume III, pp. 617-620, June 11-14, (2001), Nice, France.

98. Tohmura*, S., and Argyropoulos, D. S. “Determination of Arylglycerol-b-aryl Ethers and Other Linkages in Residual Kraft and Milled Wood Lignins.” 11^thInternational Symposium on Wood and Pulping Chemistry, Poster presentations volume II, pp.1-5 , June 11-14, (2001), Nice, France.

97. Beaton*, C., R., Argyropoulos, D., S., “Photo-Protection Mechanisms of UV Stabilizers on Milled Wood Lignin.” Annual Paptac Meeting, Montreal, Que., Jan 30- Feb 2, 2001.

2000

96. Argyropoulos*, D. S., Akim, L. and Ahvazi, B. “Salient Reactions in Lignin During Pulping and Bleaching,” Tappi Pulping Conference, Nov. 6-8, Boston, Mass, 2000.

95. Suchy*, M., and Argyropoulos, D. S., “Catalysis and Activation of Oxygen and Peroxide Delignification of Chemical Pulps: A Review.” Tappi Pulping Conference, Nov. 6-8, Boston, Mass, 2000.

94. Akim*, L., Argyropoulos, D. S., Jouanin, L., Leple, J-C., Pilate, G., Pollet, B., and Lapierre, C., ³¹P NMR Spectroscopy of Lignins from Transgenic Poplars.” Tappi Pulping Conference, Nov. 6-8, Boston, Mass, 2000.

93. Argyropoulos, D. S., Sun, Y., Palus, E., “A Novel Method for Isolating Residual Kraft Lignin.” 6^th, European Workshop on Lignocellulosics and Pulp, 23-27, Université Bordeaux I, Bordeaux, France, Sept. 3-6, 2000.

92. Tohmura*, S. and Argyropoulos, D. S., “Determination of Aryl Glycerol-ß-Aryl Ether and Other Linkages in Softwood and Residual Kraft Lignins.” 6^th European Workshop on Lignocellulosics and Pulp, 57-62, Université Bordeaux I, Bordeaux, France, Sept. 3-6, 2000.

91. Jääskeläinen*, A., S., and Argyropoulos, D. S. “An Improved Method for the Quantitative Lignin Analysis Using Pyrolysis-Gas Chromatography.” 6th European Workshop on Lignocellulosics and Pulp, 371-374, Université Bordeaux I, Bordeaux, France, Sept. 3-6, 2000.

90. Beaton*, C., R., Argyropoulos, D., S., “Photo-Protection Mechanisms of UV Stabilizers on Milled Wood Lignin.” 6th European Workshop on Lignocellulosics and Pulp, 191-196, Université Bordeaux I, Bordeaux, France, Sept. 3-6, 2000.

89. De Souza*, I., J., , Bouchard, J., Methot, M., Berry, R.,M., and Argyropoulos, D. S., “Changes in Cellulose Crystalinity During Oxygen Delignification.” International Pulping Conference,Poster Presentations Volume 41-45, Halifax, Nova Scotia, Canada, 2000.

88. Colodette*, J.L., Gomide, J., L., Jaaskelainen, T., Argyropoulos, D. S., “Influence of Pulping Conditions on Hardwood Pulp Yield, Quality and Bleachability.” International Pulping Conference, Oral Presentations Volume 41-48, Halifax, Nova Scotia, Canada, (2000).

87. Akim, L., Colodette, J.L. and Argyropoulos*, D. S., “Factors Limiting Oxygen Delignification of Kraft Pulp.” International Pulping Conference, Oral Presentations Volume pp.103-113, Halifax, Nova Scotia, Canada, 2000.

1.Argyropoulos*, D. S., “Understanding Lignin Oxidation and Condensation Reactions Using NMR.” 83rd Canadian Society of Chemistry Conference, Calgary, Alberta, May 27-31 2000. Section, MA1, Symposium on Natural Macromolecules.

85. Tohmura*, S. and Argyropoulos, D. S., “Determination of Beta-Aryl Ether Linkages in Softwood and Residual Kraft Lignins.” 50^th Annual Meeting of the Japan Wood Research Society, Kyoto, Japan, p.380, 2000.

84. Jurasek* , L., and Argyropoulos, D. S., “Molecular Mechanisms of the Formation of Zulauf and Zutropf DHP Lignins are Applicable to Native Lignin Biosynthesis.” American Chemical Society, Cellulose, Paper and Textile Division, San Fransisco, Ca, Paper. No. 103, March 26-30 2000.

83. Crestini*, C., and Argyropoulos, D. S., “On the Role of 1-Hydroxybenzotriazole as Mediator in Laccase Oxidation of Residual Kraft Lignin.” American Chemical Society, Cellulose, Paper and Textile Division, San Fransisco, Ca, Paper. No. 150, March 26-30 2000.

82. Jurasek*, L., and Argyropoulos, D., S., “Detailed Study of the Alkaline Oxidative Degradation of A Residual Kraft Lignin Model Compound.” American Chemical Society, Cellulose, Paper and Textile Division, San Fransisco, Ca, Paper. No.75, March 26-30 2000.

81. Suchy*, M., and Argyropoulos, D. S., “Catalysis and Activation of Oxygen and Peroxide Delignification of Chemical Pulps: A Review.” American Chemical Society, Cellulose, Paper and Textile Division, San Fransisco, Ca, Paper. No. 117, March 26-30 2000.

80. Moore*, D., and Argyropoulos, D. S. “A Pilot Plant Trial Using in Situ Peroxyborate for the Brightness Retention of TMP.” 86^th Annual Meeting, PAPTAC, Montreal, Canada, 2000.

79. Colodette*, J., Gomide, J. L., Gleysis, K., Kogan, J., Jaskelainen, A-S., and Argyropoulos, D. S. , “Yield and Bleachability of Hardwood and Softwood Kraft/Polysulfide Pulps.” 86^th Annual Meeting, PAPTAC, Montreal, Canada, Vol. C pp. C143-C147, 2000.

1999

78. Argyropoulos*, D. S., Ahvazi, B., Pageau, G,and Liu, Y., “Lignin Condensation Reactions During Pulping and Oxygen Delignification.” 6^thBrazilian Symposium on the Chemistry of Lignins and Other Wood Components, Vol. VII, pp.159-166, (2001), October 25-28, 1999, Clube dos 500 Hotel, Guaratinguetá, SP, Brazil.

77. Ahvazi, B., Crestini, C., and Argyropoulos*, D. S., “Development and Applications of ¹⁹F NMR for the Quantitative Detection and Classification of Carbonyl Groups in Lignins.” 10^thInternational Conference, Instrumental Methods of Analysis, Modern Trends and Applications, Vol. I, pp. 103-109, 19-22, Sept. (1999), Halkidiki, Greece.

76. Sun*, Y.J., Fenster, M., Yu, A., Berry, R. M., and Argyropoulos, D. S., “The Effect of Metal Ions on the Reaction of Hydrogen Peroxide with Kraft Lignin Model Compounds.” 10^thInternational Symposium on Wood and Pulping Chemistry, Oral presentations volume I, pp. 242-247, June 7-10, (1999), Yokohama, Japan.

75. Argyropoulos*, D. S., Ahvazi, B., Pageau, G,and Liu, Y., “Understanding the Role and Fate of Lignins Condensed Structures, During Pulping and Oxygen Delignification.” 10^thInternational Symposium on Wood and Pulping Chemistry, Oral presentations volume I, pp. 340-345, June 7-10, (1999), Yokohama, Japan.

74. Ahvazi, B., Crestini, C., and Argyropoulos*, D. S., “¹⁹ F Nuclear Magnetic Resonance Spectroscopy NMR) for the Quantitative Detection and Classification of Carbonyl Groups in Lignins.” 10^thInternational Symposium on Wood and Pulping Chemistry, Oral presentations volume I, pp. 34-39, June 7-10, (1999), Yokohama, Japan.

73. Billa*, E., Argyropoulos, D. S., Koukios, E., “Chemometric Correlation of ³¹P NMR with Fluorescence Spectroscopy Data for Pulps and their Residual Lignins.” 10^thInternational Symposium on Wood and Pulping Chemistry, Poster presentations volume II, pp. 228-231, June 7-10, (1999), Yokohama, Japan.

72. Argyropoulos* , D. S., and Zhang, L., “On the Semiquantitative Determination of Quinonoid Structures in Soluble Lignins by ³¹P NMR.” 10^thInternational Symposium on Wood and Pulping Chemistry, Poster presentations volume II, pp. 172-177, June 7-10, (1999), Yokohama, Japan.

71. Ahvazi*, B., and Argyropoulos, D. S., “Proton Spin-Lattice relaxation Time Measurements of Solid Wood and its Constituents as a Function of pH.” 10^th International Symposium on Wood and Pulping Chemistry, Poster presentations volume II, pp. 142-147, June 7-10, (1999), Yokohama, Japan.

1998

70. Argyropoulos*, D. S., and Liu, Y., “The Role and Fate of Lignin’s Condensed Structures During Oxygen Delignification.” Tappi Pulping Conference, Montreal, Canada Oct. 25-29, Vol. 3, pp. 1527-1540, 1998.

69. Suchy*, M., and Argyropoulos. D. S. “Activation of Alkaline Peroxide Delignification Using aVanadium Peroxo Complex.” Tappi Pulping Conference, Montreal, Canada Oct. 25-29, Vol. 3, pp. 1277-1290, 1998.

68. Ahvazi, B., Pageau, G., and Argyropoulos*, D. S., “On the Formation of Diphenylmethane Structures in Lignin Under Kraft, Soda and EMCC Pulping Conditions.” Fifth European Workshop on Lignocellulosics and Pulp, Aveiro, Portugal, pp. 495-499, Aug.30- Sept. 2 1998.

67. Crestini*, C., and Argyropoulos, D. S., “Aliphatic Moieties Induced on Lignins when Exposed to Oxygen, Peroxide, and Enzymatic Oxidations.” Fifth European Workshop on Lignocellulosics and Pulp, Aveiro, Portugal, pp. 273-276, Aug.30- Sept. 2 1998.

66. Moore*, D., and Argyropoulos, D. S., “A Sensitive Analytical Protocol for the Detection of Active Oxygen Species Present on Solid Lignocellulosic Matrices.” Fifth European Workshop on Lignocellulosics and Pulp, Aveiro, Portugal, pp. 237-240, Aug.30- Sept. 2 1998.

65. Billa*, E., Argyropoulos, D. S., and Koukios, E., G., “Correlating ³¹P NMR and Fluorescence Data of Residual Kraft Lignins by Multivariate Chemomentric Analysis.” Fifth European Workshop on Lignocellulosics and Pulp. Aveiro, Portugal, pp. 183-186, Aug.30- Sept. 2 1998.

64. Colodette*, J. L., Gomide, J. L. Robles, Y. A. M., Almeida, J. M., de Brito, A. C. H., Mehlman, S. K., Argyropoulos, D. S. “Effect of the Pulping Process on Pulp Bleachability With ECF, Z-ECF and TCF Bleaching Sequences.” International Pulp Bleaching Conference, Vol. 1, pp.61-70, June 1998.

63. Liu, Z. and Argyropoulos, D. S*. “Maintaining the Brightness of Mechanical Pulps via Solid-State Perborate Bleaching.” 84^thAnnual Meeting of the Technical Section of the Canadian Pulp and Paper Association, B235-B240, 1998.

62. J. Young* , Y. Sun and D. S. Argyropoulos “Functional Group Changes in Residual and Solubilized Lignins Through Various Stages of a Northern Bleached Softwood ECF Fibreline.“ 84^th Annual Meeting of the Technical Section of the Canadian Pulp and Paper Association, 1998.

1997

61. Argyropoulos, D. S*. “Heteronuclear NMR Analysis of Lignocellulosic Materials.” Fifth Chemical Congress of North America, Cancun, Mexico, Nov. 11-15, 1997.

60. Asgari, F. and D. S. Argyropoulos*, “Fundamentals of Oxygen Delignification, Part II, Kinetics of Functional Group Formation/Elimination in Residual Kraft Lignin.” Tappi Pulping Conference, San Franscisco, CA. Oct. 18-23, Vol. 2 pp. 951-961, 1997.

59. Argyropoulos, D. S*. “Fundamental NMR Studies of Lignins: Emerging Answers to Issues of Concern in Relation to Pulping, TCF Bleaching and Yellowing.” Plenary Lecture, Fifth Brazilian Symposium on the Chemistry of Lignins and Other Wood Components/Workshop of the International Energy Agency on Biotechnology Applied to Lignocellulosic Materials, Burbon Hotel, Curitiba, PR. Brazil, Aug. 31- Sept. 4 1997.

58. Jiang, J*., Argyropoulos, D. S., “Isolation and Characterization of Residual Lignin in Kraft Pulp.” 9^thInternational Symposium on Wood and Pulping Chemistry, Oral presentations volume, pp. J2-1to J2-6, June 9-12, (1997). Montreal, Canada.

57. Argyropoulos, D. S. and Sun, Y*., “Photochemically Induced Degradation, Condensation and Rearrangement Reactions in Lignin Model Compounds and Milled Wood Lignin.” 9^th International Symposium on Wood and Pulping Chemistry, Oral presentations volume, pp. K5-1toK5-6 June 9-12, (1997). Montreal, Canada.

56. Crestini, C*., G. G. Sermani, and Argyropoulos, D. S.”The Biodegradation of Wheat Straw Lignins by the White-Rot Fungus Lentinus Edodes.” 9^thInternational Symposium on Wood and Pulping Chemistry Posters volume pp. 16-1 to 16-4, June 9-12, (1997). Montreal, Canada.

55. Ahvazi, B*, Argyropoulos, D. S. “Quantitative Detection of Carbonyl Groups in Native and Technical Lignins.” 9^thInternational Symposium on Wood and Pulping Chemistry, Posters volume pp. 7-1 to 7-5, June 9-12, (1997). Montreal, Canada.

54. Crestini*, C., Argyropoulos, D. S., “The Early Biodegradation Pathways of Residual Kraft Lignin Model Compounds with Laccase.” 9^th International Symposium on Wood and Pulping Chemistry, Posters volume pp. 20-1 to 20-5, June 9-12, (1997). Montreal, Canada.

53. Billa, E*., Argyropoulos, D. S. and Koukios, E., “Correlating Residual Kraft Lignins ³¹P NMR and Fluorescence Spectroscopy Data by Multivariant Chemometric Analysis.” Advances in Microscopy and NMR Spectroscopy of Lignocellulosic Materials, Pre-symposium Workshop to the 9^thInternational Symposium on Wood and Pulping Chemistry, June 5-6, (1997).

52. Argyropoulos, D. S*., “Quantitative Phosphorus and Fluorine NMR Spectroscopies for the Structural Elucidation of Lignin.” Advances in Microscopy and NMR Spectroscopy of Lignocellulosic Materials, Invited Presentation, Pre-symposium Workshop to the 9^thInternational Symposium on Wood and Pulping Chemistry, June 5-6, (1997).

51. Liu, J., and Argyropoulos, D. S*. “Bleaching out The Yellow While it Forms During Reversion with Solid-State Bleaching.” CPPA Pacific and Western Branches Joint Technical Conference, Whistler, BC, Session 3A, paper no. 2, May 14-17 1997.

50. Puping*, P. Halevy, P., Argyropoulos, D. S. “Photoyellowing Inhibition of BCTMP Using Water Soluble UV Screens.” 83^ndAnnual Meeting of the Technical Section of the Canadian Pulp and Paper Association, Feb. 1997.

1996

49. Sun, Y., and Argyropoulos, D.S*. “Fundamentals of High Pressure and Low Pressure Oxygen-Peroxide (Eop) Delignification of Softwood and Hardwood Kraft Pulps.” Book 1, pp. 457-463, Tappi Pulping Conference, Nashville, TN, 1996.

48. Billa, E*., Argyropoulos, D. S., and Koukios, E., “Multivariate Chemometrics Approach for the Fluorescence of Residual Kraft Lignins.” Workshop on Bioproducts from Lignocellulosics-Progress in Developing Feasible Bio/Chemical Pathways,” Sounion, Greece, September, 25-27, 1996.

47. Crestini, C, and Argyropoulos, D. S*. “Biodegradation of Kraft Lignin Model Compounds by Laccase from Trametes Versicolor.” Invited presentation, Workshop on Bioproducts from Lignocellulosics-Progress in Developing Feasible Bio/Chemical Pathways, Sounion, Greece, September, 25-27, 1996.

46. Argyropoulos, D.S*., “Recent Advances on Lignin Characterization.” Invited Presentation, Workshop on Bioproducts from Lignocellulosics-Progress in Developing Feasible Bio/Chemical Pathways, Sounion, Greece, September, 25-27, 1996.

45. Crestini, C*. and Argyropoulos, D. S. “Structural Analysis of Wheat Straw Lignin by Quantitative ³¹P-NMR and 2D NMR Spectroscopy; The Occurrence of Ester Bonds and beta-O-4 Substructures.” Fourth European Workshop on Lignocellulosics and Pulp, on Advances in Characterization and Processing of Wood, Non-woody and Secondary Fibres, Stresa, Italy, Sept. 8-11, pp. 51-55, 1996.

44. Billa, E., Argyropoulos, D.S*. and Koukios, E. “A Multivariate Chemometrics Approach for the Fluorescence of Residual Kraft Lignins.” Fourth European Workshop on Lignocellulosics and Pulp, on Advances in Characterization and Processing of Wood, Non-woody and Secondary Fibres, Stresa, Italy, Sept. 8-11, pp. 304- 308, 1996.

43. A. Spyros*, D. S. Argyropoulos and R.H. Marchessault, “³¹P NMR, A New and Efficient Tool for Determining Molecular Weights and Studying Degradation of PHA’s.” International Symposium on Bacterial Polyhydroxyalkanoates 1996, Davos Switzerland, 18-23 August 1996.

42. Mazur*, M., and Argyropoulos, D. S., “Relaxation Mechanisms of Phosphitylated Lignins.” 11^th NMR Valtice 15-17, Slovakia, April 1996.

41. Bouchard, J*., Maine, C., Argyropoulos, D. S. and Berry, R. M., “Kraft Pulp Bleaching Using In-Situ Dimethyldioxirane: Mechanism and Reactivity of the Oxidants.” CPPA Pacific and Western Branches Joint Technical Conference, Jasper, Alberta, May 15-18 1996.

40. Y. Sun, D. S. Argyropoulos* “A Comparison of the Reactivity and Efficiency of Ozone, Chlorine Dioxide, Dimethyldioxirane and Hydrogen Peroxide with Residual Kraft Lignin.” CPPA Pacific and Western Branches Joint Technical Conference, Jasper, Alberta, May 15-18 1996.

39. Bouchard*, J, Chen, J. And Argyropoulos, D. S. “Bleaching With Dimethyldioxirane: A Review of its Fundamentals.” Cellulose Paper and Textile Division Paper no. 220, 211^ntAmerican Chemical Society Meeting, New Orleans LA, March 24-28 1996.

38. Ahvazi*, B., Borbaruah, M., Argyropoulos, D. S. “¹⁹F NMR Spectroscopy for the Elucidation of Carbonyl-Groups in Lignins; Part I, Lignin Model Compounds.” 37^th Experimental NMR Conference, Asilomar, CA March 19-22, Paper WP140, p.292, 1996.

37. Ahvazi, B*., Argyropoulos, D. S. “Quantitative Detection of Carbonyl Groups in Native and Technical lignins by ¹⁹F NMR Spectroscopy.” Cellulose Paper and Textile Division Paper no. 114, 211^ntAmerican Chemical Society Meeting, New Orleans LA, March 24-28 1996.

36. Ahvazi, B*., Borbaruah, M., Argyropoulos, D. S. “¹⁹F NMR Spectroscopy for the Elucidation of Carbonyl-Groups in Lignins; Part I, Lignin Model Compounds.” 82^ndAnnual Meeting of the Technical Section of the Canadian Pulp and Paper Association, Feb. 1996.

35. Zhang, L*. Argyropoulos, D. S. “Quantification of Quinonoid Structures in Soluble Lignins by Phosphorus NMR.” 82^ndAnnual Meeting of the Technical Section of the Canadian Pulp and Paper Association, Feb. 1996.

1995

34. Argyropoulos, D. S*. “The Development of Condensed Structures in Lignin During Kraft Pulping.” International Chemical Congress of Pacific Basin Societies, Honolulu, Hawaii, Paper, O1E-183, Dec. 19, 1995.

33. Argyropoulos, D. S*., Hortling, B., Poppius-Levlin, K., Sun, Y, Mazur, M., “MILOX Pulping, Lignin Characterization by ³¹P NMR Spectroscopy and Oxidative Degradation.” 8^th International Symposium of Wood & Pulping Chemistry, Helsinki, Finland, June 6-9, Vol. 1 495-502, 1995.

32. Y. Sun, D. S. Argyropoulos* “A Comparison of the Reactivity and Efficiency of Ozone, Chlorine Dioxide, Dimethyldioxirane and Hydrogen Peroxide with Residual Kraft Lignin.” 8^th International Symposium of Wood & Pulping Chemistry, Helsinki, Finland, June 6-9, Vol. 1 361-368, 1995.

31. Z. Jiang and D. S. Argyropoulos* “The Application of the Mannich Reaction Toward the Quantitative Analysis of Lignins.” 8^th International Symposium of Wood & Pulping Chemistry, Helsinki, Finland, June 6-9, Vol. 1 511-518, 1995.

30. Faix*, O., Andersons, B., Argyropoulos, D. S. and Robert, D. “Determination of Total Phenolic Hydroxyl and Carbonyl Groups of Lignins. A Critical Overview.” 8^th International Symposium of Wood & Pulping Chemistry, Helsinki, Finland, June 6-9, Vol. 1 559-566, 1995.

29. Jiang, Z.H*., Argyropoulos, D. S. and Granata, A. “Correlation Analysis of ³¹P NMR Chemical Shifts with Substituent Effects of Phenols.” paper no. 249, 36^th Experimental NMR Conference, Copley Place, Boston MA, March 26-30, 1995.

28. Argyropoulos, D. S*. “Fundamental NMR Studies of Lignins: Emerging Answers to Issues of Concern in Relation to Pulping, TCF Bleaching and Yellowing.” 81^stAnnual Meeting of the Technical Section of the Canadian Pulp and Paper Association, A-209-A214, Feb. 1995.

27. Argyropoulos, D. S. and Luo*, S. G. “Structural Investigations of lignin During the Bleaching of Sulphonated Mechanical Pulps.” 81^stAnnual Meeting of the Technical Section of the Canadian Pulp and Paper Association, Poster Session, Feb. 1995.

26. Jiang, Z.H., Sun, Y*., Argyropoulos, D. S. “Correlation Analysis in ³¹P NMR Spectroscopy Aimed at Understanding Photochemical Events in Lignin.” 81^stAnnual Meeting of the Technical Section of the Canadian Pulp and Paper Association, Poster Session, Feb. 1995.

1994

25. Argyropoulos, D. S*., Sun, Y, Berry, R. M. and Bouchard, J.^“On the Reactivity of Dimethyldioxirane with Lignin Model Compounds.” Third European Workshop on Lignocellulosics and Pulp, Hasseludden, Stockholm, Sweden, August 29-31,pp. 266-271, 1994.

24. B. Saake*, D. S. Argyropoulos , O. Faix, “Structural Investigations of Synthetic Lignins (DHP's) as a Function of Molar Mass and Mode of Preparation.” Third European Workshop on Lignocellulosics and Pulp, Hasseludden, Stockholm, Sweden, August 29-31, pp. 210-214, 1994.

23. Argyropoulos, D. S*., Heitner, C. and Schmidt, J. A. “Observation of Quinonoid Groups During the Light-Induced Yellowing of Softwod Mechanical Pulp.” Third European Workshop on Lignocellulosics and Pulp, Hasseludden, Stockholm, Sweden, August 29-31, pp. 154-158, 1994.

22. Argyropoulos, D. S*., Sun, Y, Berry, R. M. and Bouchard, J.^“Reactions of Dimethyldioxirane with Lignin Model Compounds.” 1994 International Pulp Bleaching Conference.” Hyatt Regency Hotel, Vancouver B.C. June 13-16, Posters vol., p.p. 83-91, 1994.

21. Sun, Y*., and Argyropoulos, D. S. “Fundamentals of High Pressure Oxygen and Low Pressure Oxygen-Peroxide (EOP) Delignification of Softwood and Hardwood Kraft Pulps; A Comparison.” “New Developments in Pulp Bleaching and Brightening.” American Institute of Chemical Engineers, Spring National Meeting, Atlanta Georgia, Paper no. 30d, April 17-24 1994. Invited Contribution.

1993

20. Argyropoulos D.S*. “Phosphorus-31 NMR Analysis of Lignins: A Novel Quantitative Method to Follow Structural Changes in Lignins.” Proceedings International Conference on Emerging Technologies in the Pulp and Paper Industry, Taipei Taiwan, pp. 8-12, May 18-20 1993. Invited Contribution.

19. Argyropoulos D. S*. and Morin, F. “Probing the Macromolecular Structure of Wood and Pulps with Proton Spin-Lattice Relaxation Time Measurements in the Solid State.” American Chemical Society National Meeting, Cellulose Paper and Textiles Division, Paper No. 78, Denver Colorado, March 28-April 2 1993, Invited Contribution.

18. Argyropoulos, D. S*. “Quantitative Phosphorus-31 NMR Analysis of Lignins; A New Tool for the Lignin Chemist.” American Chemical Society National Meeting, Symposium on “NMR of Biomaterials.” Cellulose Paper and Textiles Division, Paper No. 152, Denver Colorado, March 28-April 2 1993, Invited Contribution.

17. Argyropoulos, D. S*. “³¹P NMR in Wood Chemistry, A Review of Recent Progress.” Proceedings 7^th International Symposium of Wood & Pulping Chemistry, Beijing, China, May 25-28, Vol. 2. pp 776-787, 1993.

16. Argyropoulos, D. S*., Bolker, H. I., Heitner, C., Archipov, Y., “The Structural Elucidation of Lignins Using ³¹P NMR Spectroscopy.” Emerging Science and Technology for the Pulp and paper Industry, McMaster University, Hamilton Ontario, Sept. 2 1993.

15. Argyropoulos, D.S*. “Phosphorus-31 NMR Spectroscopy as Applied to Wood Biopolymers.” 33rd Experimental Nuclear Magnetic Resonance Conference, March 29-April 2, 1992, Asilomar Conference Center, Pacific Grove California.

1992

14. Argyropoulos, D. S*., “Phosphorus-31 NMR Analysis of Steam Explosion Lignins.” Advances in Thermochemical Biomass Conversion, May 11-15, 1992, Interlaken Switzerland.

1991

13. Argyropoulos, D.S*. “New NMR Methods.” Modern Methods of Analysis of Wood, Annual Plants and Lignins, Monteleone Hotel, New Orleans, November 29 - December 1, 1991, Invited Contribution.

12. Argyropoulos, D.S*. “Phosphorus-31 NMR Analysis of Six Soluble Lignins. A Novel Method for Functional Group Quantitation.” Modern Methods of Analysis of Wood, Annual Plants and Lignins, Monteleone Hotel, New Orleans, November 29 - December 1, 1991, Invited Contribution.

11. Argyropoulos, D.S*. and Heitner C. “Ultra High Yield Pulping Part VII. The Effect of pH During Impregnation on the Quality of Lightly Sulphonated TMP.” International Mechanical Pulping Conference, Minneapolis, Minnesota, pp.191-197, June 1-6, 1991.

10. Heitner, C., Argyropoulos, D.S*., Miles, K., Karnis, A. and Kerr, B. “Alkaline Sulphite Ultra-High Yield Pulping of Aspen Chips - A Comparison of Steam Explosion and Conventional Chemimechanical Pulping.” International Mechanical Pulping Conference, Minneapolis, Minnesota, pp.151-164, June 1-6, 1991.

9. Archipov, Y., Argyropoulos, D.S*., Bolker, H. I., and Heitner, C. “³¹P NMR Spectroscopy in Wood Chemistry.” International Symposium of Wood & Pulping Chemistry, Melbourne Australia, 1, pp.359-366 April 30-May 4, 1991.

8. Argyropoulos, D.S*., Archipov, Y., Bolker, H. I., and Heitner, C. The Potential of “³¹P NMR Spectroscopy in Wood Chemistry.” Workshop on Methods of Analysis of Wood and Environmental Samples, Rotorua, New Zealand , May 7-8, 1991.

7. Fillppov, V., Archipov, Y*., and Argyropoulos, D. S., “4,4,5,5-Tetramethyl-1,3,2-dioxaphospholanyl Chloride-Derivatizing Reagent for Lignin Functional Group Analysis.” Materials 7^th International Conference of Young Scientists, Riga, Latvia, (1991).

1987

6. Argyropoulos, D.S*. and Bolker, H. I. “The Gel Degradation Theory of Wood Delignification; Experimental Confirmation with a Model Polymer.” Proceedings of the 4th International Symposium of Wood and Pulping Chemistry, 1, 399-405, Paris, France, April 1987.

1986

5. Argyropoulos, D.S*. and Bolker, H. I. “Species Distribution in the Sol Phase Beyond the Gel Point.” Macromolecular Reprints, Royal Society of Chemistry, Oxford, England, Vol, 1, 111-114, (1986).

4. Argyropoulos, D.S*., Bolker, H. I., “A Facile Synthesis of Monodisperse Carboxylated Polystyrene.” Polymer Preprints 27(1), 457, (1986). ACS National Meeting, New York, April 1986.

1984

3. Argyropoulos, D.S*. and Bolker, H. I. “Synthesis and Degradation of Polymer Networks.” Polymer Preprints, 25(2), 130 (1984), ACS National Meeting, Philadelphia, PA., August 1984.

2. Argyropoulos, D.S*. and Bolker, H. I. “Breaking Crosslinks to Solubilize Lignin.” Cellulose, Paper and Textile Division, Paper No. 133 ACS National Meeting, Philadelphia, PA., August 1984.

1982

1. Argyropoulos, D. S*., Hodd, K.,A., and Wright, W., W., “The influence of Crosslink Density on Thermal Properties of Some Epoxy Resins Based on 4,4'-Diaminodiphenyl Methane.” 7^th International Conference on Thermal Analysis, Paper no. IV-FF-5, Kingston, Ontario, August 22-28, 1982.