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Studies on the cure kinetics of chitosan‐glutamic acid using glutaraldehyde as crosslinker through differential scanning calorimeter
Author(s) -
Kumari Kamlesh,
Raina K. K.,
Kundu P. P.
Publication year - 2008
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/app.27695
Subject(s) - differential scanning calorimetry , glutaraldehyde , chitosan , curing (chemistry) , exothermic reaction , kinetics , activation energy , materials science , polymer chemistry , nuclear chemistry , chemical engineering , chemistry , chromatography , organic chemistry , thermodynamics , physics , quantum mechanics , engineering
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°C/min. Cure kinetics are measured by the DSC using scans from 25 to 220°C at four different heating rates (3, 5, 7, and 10°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 α ) is determined by Flynn, Wall, and Ozawa method for curing of the samples. An increase in activation energy ( E α ) is observed with the extent of conversion. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008