Synthesis and thermosensitive behavior of dextran graft copolymers containing poly(N-vinylcaprolactam)side chains

SHI Huangying; CHEN Wenjuan; ZHANG Liming

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Synthesis and thermosensitive behavior of dextran graft copolymers containing poly(N-vinylcaprolactam)side chains

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New graft copolymers were synthesized by graft-ing N-vinylcaprolactam onto dextran.Their composition and structure were investigated by elemental analyses,infrared spectra and thermogravimetric analyses.By optical transmit-tance measurements,it was found that the aqueous solutions of these graft copolymers showed a temperature-dependent transmittance change due to the introduction of thermosensi-tive poly(N-vinylcaprolactam)graft chains.Moreover,the lower critical solution temperature(LCST)of the graft copolymer in aqueous solution was dependent on its grafting extent and concentration.The LCST value was found to increase with the increase of the grafting extent and decrease with the increase of the copolymer concentration.With these stimuli-response properties,such polysaccharide derivative may hold potential applications in biomedicine and biotechnology.

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《化学科学与工程前沿：英文版》 |2007年第1期|72-75|共4页
作者
SHI Huangying; CHEN Wenjuan; ZHANG Liming;
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作者单位

Institute of Polymer Science;

School of Chemistry and Chemical Engineering and Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education;

Sun Yat-Sen(Zhongshan)University;

Guangzhou 510275;

China;

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原文格式 PDF
正文语种 chi
中图分类高分子化学（高聚物）;
关键词
intelligent polymers; polysaccharide derivative; thermosensitive behavior; phase transition;

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Synthesis and thermosensitive behavior of dextran graft copolymers containing poly(N-vinylcaprolactam)side chains

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