Grafting of poly(triethylene glycol dimethacrylate) onto chitosan by ceric ion initiation

被引：29
|
作者：
Yilmaz, E.
Adali, T.
Yilmaz, O.
Bengisu, M.
机构：
[1] Eastern Mediterranean Univ, Dept Chem, Gazimagusa, Turkey
[2] Girne Amer Univ, Grad Sch Social & Appl Sci, Karaoglanoglu Girne, Turkey
[3] Eastern Mediterranean Univ, Dept Ind Engn, Gazimagusa, Turkey
来源：
REACTIVE & FUNCTIONAL POLYMERS | 2007年 / 67卷 / 01期
关键词：
redox initiation; cerium ammonium nitrate; copolymerization; water soluble; cross linking; oxidation;
D O I：
10.1016/j.reactfunctpolym.2006.08.003
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Grafting of poly(triethylene glycol dimethacrylate) (poly(TriEGDMA)), onto chitosan by ceric ion initiation has been investigated. The grafting conditions were optimized by studying the effect of monomer and initiator concentrations as well as time and temperature. Products with lower grafting yields (90-261%) were water and acid soluble. Those with higher grafting yields (350-868%) were insoluble, indicating a cross linked structure. Chitosan-graft-poly(TriEGDMA) products had a lower thermal stability than chitosan as revealed by DSC analysis. C-13 NMR and FTIR analyses suggested a grafting mechanism that proceeds via oxidation and chain scission of chitosan. The products are degraded by the enzymes lysozyme, lipase and alpha-amylase-protease. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：10 / 18
页数：9
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