Studies on the cure kinetics of chitosan-glutamic acid using glutaraldehyde as crosslinker through differential scanning calorimeter

被引：3
作者：
Kumari, Kamlesh [1 ]
Raina, K. K. [2 ]
Kundu, P. P. [1 ]
机构：
[1] Sant Longowal Inst Engn & Technol, Dept Chem Technol, Longowal 148106, India
[2] Thapar Univ, Sch Phys & Mat Sci, Mat Res Lab, Liquid Crystal Grp, Patiala 147004, Punjab, India
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2008年 / 108卷 / 01期
关键词：
chitosan; crosslinker; IPNs; curing; thermal analysis;
D O I：
10.1002/app.27695
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The curing of chitosan-glutamic acid with glutaraldehyde as curing agent in the presence of chlorpheniramine maleate (CPM) is carried out with the help of differential scanning calorimeter (DSC). The effect of concentration of chitosan and percentage of crosslinker on the curing of chitosan-glutamic acid is studied at a heating rate of 5 degrees C/min. Cure kinetics are measured by the DSC using scans from 25 to 220 degrees C at four different heating rates (3, 5, 7, and 10 degrees C/min) and it is observed that the crosslinking of chitosan-glutamic acid is an exothermic process which results in a positive peak in the DSC thermograms. The activation energy (E-alpha) is determined by Flynn, Wall, and Ozawa method for curing of the samples. An increase in activation energy (E-alpha) is observed with the extent of conversion. (C) 2008 Wiley Periodicals, Inc.
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页码：681 / 688
页数：8
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