Constitution of a glucomannan from white spruce.

• Main Author: Tyminski, Andrew.
• Other Authors: Timell, T. (Supervisor)
• Format: Others
• Language: en
• Published: McGill University 1960
• Subjects: Chemistry.
• Online Access: http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112941

Besides the extractives, which in certain species of woods can be very considerable, the three main components of wood are cellulose, hemicellulose and lignin. Cellulose is a linear polymer consisting or B-D-glucopyranose residues linked together by (1 4) glycosidic bonds. In native celluloses, no less than 5,000 such residues are probably present in an average cellulose macromolecule, corresponding to a weight-average degree of polymerization of 10,000 if the ratio between number and weight-average values is assumed to be the usual 1:2.