Synthesis and aqueous solution behavior of phosphonate-functionalized chitosans

A series of novel phosphonate-functionalized pH-responsive chitosans were directly synthesized via Michael addition of chitosan with mono-(2-acryloyloxyethyl) phosphonate. The conformational and phase transitions of these phosphonate-functionalized chitosans were investigated by turbidity and UV–vis...

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Bibliographic Details
Published in:European polymer journal 2006-10, Vol.42 (10), p.2678-2685
Main Authors: Kang, Hongmei, Cai, Yuanli, Deng, Junjie, Zhang, Haijia, Tang, Yufang, Liu, Pengsheng
Format: Article
Language:English
Subjects:
Anti-polyelectrolyte
Applied sciences
Chitosan
Conformational transition
Exact sciences and technology
Natural polymers
pH-responsive
Physicochemistry of polymers
Polyelectrolyte
Starch and polysaccharides
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Summary:A series of novel phosphonate-functionalized pH-responsive chitosans were directly synthesized via Michael addition of chitosan with mono-(2-acryloyloxyethyl) phosphonate. The conformational and phase transitions of these phosphonate-functionalized chitosans were investigated by turbidity and UV–vis spectroscopy studies. The results indicated that the inter- or intra-chain electrostatic interactions of the phosphonate-functionalized chitosans could be controlled via adjusting the solution pH, leading to the reversible conformational and phase transitions of these chitosans. These phosphonate-functionalized chitosans exhibited typical anti-polyelectrolyte effect and polyelectrolyte effect.
ISSN:0014-3057
1873-1945
DOI:10.1016/j.eurpolymj.2006.05.006