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The kinetics of cellulose dissolution in sodium hydroxide solution at low temperatures
Author(s) -
Wang Ying,
Deng Yulin
Publication year - 2008
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.22160
Subject(s) - dissolution , cellulose , sodium hydroxide , urea , kinetics , slurry , chemistry , activation energy , chemical engineering , degree of polymerization , polymerization , nuclear chemistry , materials science , inorganic chemistry , organic chemistry , polymer , composite material , physics , quantum mechanics , engineering
The dissolution kinetics of cellulose in sodium hydroxide in the presence and absence of urea at low temperature was studied. High molecular weight cotton linter with degree of polymerization of 850 was used for dissolution study. The cotton linter was separated from the dissolution slurry at different dissolution times, and the change of the crystal structure of cotton linter was characterized by Powder X‐Ray Diffraction. The rate of decrystallization of cellulose was obtained and the activation energy for cellulose decrystallization in sodium hydroxide solution was derived using Eyring equation. The effect of urea additive was discussed. Biotechnol. Bioeng. 2009;102: 1398–1405. © 2008 Wiley Periodicals, Inc.