Journal
CARBOHYDRATE RESEARCH
Volume 341, Issue 1, Pages 169-173Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2005.10.016
Keywords
chitosan; persulfate; free radical; crosslinking; CP MAS C-13 NMR
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Chitosan undergoes radical-induced depolymerization in the presence of potassium persulfate at 60 degrees C, leading to extensive crosslinking of the fragmented chains on subsequent cooling at 4 degrees C. As a result, a possible conformational change leading to higher crystallinity, as evidenced by IR, X-ray and C-13 NMR was observed. (c) 2005 Published by Elsevier Ltd.
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