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Hydrolysis of mercerized cotton fibers due to cellulase treatment
Author(s) -
Haga T.,
Mori R.,
Wakida T.,
Takagishi T.
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/1097-4628(20001010)78:2<364::aid-app160>3.0.co;2-4
Subject(s) - cellulase , hydrolysis , sodium hydroxide , cellulose , ammonia , materials science , crystallite , sorption , chemical engineering , cellulose fiber , sodium , fiber , polymer chemistry , chemistry , nuclear chemistry , composite material , organic chemistry , adsorption , metallurgy , engineering
Cotton fibers mercerized under the relaxed state were hydrolyzed with crude cellulase. The mercerization treatment examined included ammonia treatment, sodium hydroxide treatment, and two combined treatments using ammonia and sodium hydroxide. Crystalline regions of the mercerized fibers were hydrolyzed in the first step of hydrolysis. In this step, ammonia treatment decreased the crystallite size to a great extent due to the hydrolysis of the cellulose III crystalline phase. Cellulase treatment rendered the crystallite surface highly accessible to water molecules. The crystalline phase was closely related to water sorption of cellulase‐treated fibers. The sequence of treatment had an influence on the fiber structure in the case of the combined mercerization treatment with ammonia and sodium hydroxide. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 364–370, 2000