Mini-Encyclopedia of Papermaking Wet-End Chemistry
Part Two: Definitions and Concepts

Hydrogen Bonding

Hydrogen bonding is one of the primary mechanisms by which papermaking fibers adhere to each other in the dry state. This is possible because cellulose and hemicellulose, two of the main components of papermaking fibers, are covered with hydroxyl groups. The oxygen atoms in these groups are able to hydrogen bond to hydrogen atoms on adjacent fibers or water molecules. Drying of paper causes some fiber-to-fiber hydrogen bonds to take the place of fiber-to-water hydrogen bonds. Recycling of paper is relatively easy because addition of water reverses this process. Hydrogen bonds have only about 5% of the energy content of a covalent bond.

Request from the webmaster: Our goals include brevity and accuracy. Hopefully we have succeeded with the first goal without sacrificing the second. Please let us know right away if you find an error or omition. Also, please indicate points that need a clearer description.


RETURN TO INDEX PAGE OF ENCYCLOPEDIA

Home page Research opportunities Business opportunities Background information Links to wet-end chemistry E-Mail
This page is maintained by Martin hubbe, Associate Professor of Wood and Paper Science, NC State University, m_hubbe@ncsu.edu .