Synthesis and aqueous solution behavior of phosphonate-functionalized chitosans
2006; Elsevier BV; Volume: 42; Issue: 10 Linguagem: Inglês
10.1016/j.eurpolymj.2006.05.006
ISSN1873-1945
AutoresHongmei Kang, Yuanli Cai, Junjie Deng, Haijia Zhang, Yufang Tang, Pengsheng Liu,
Tópico(s)Analytical Chemistry and Sensors
ResumoA 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.
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