Thermogravimetric Analysis of Ammonia-Swelled Cellulose
作者:
A. BROIDO,
M. WEINSTEIN,
期刊:
Combustion Science and Technology
(Taylor Available online 1970)
卷期:
Volume 1,
issue 4
页码: 279-285
ISSN:0010-2202
年代: 1970
DOI:10.1080/00102206908952207
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Cellulose decrystallized by swelling in liquid ammonia produced a simpler thermogravimetric analysis curve than obtained from ordinary cellulose—presumably because of a decrease in the intermolecular char-forming reactions. By using a graphical procedure which permits a linear plot of the thermogram, it was possible to resolve the overall curve into two components: the principal reaction by which more than 90% of the weight loss occurred (activation energy = 54.9 kcal/mole; pre-exponential factor = 3.15 × 1019/min), and a second component which may be approximated by a first-order reaction leading to an ultimate 4% char.
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