Homogeneous graft copolymerization of chitosan with methyl methacrylate by γ-irradiation via a phthaloylchitosan intermediate

被引：9
|
作者：
Liu, L [1 ]
Li, Y [1 ]
Zhang, WA [1 ]
Zhang, GQ [1 ]
Fang, YE [1 ]
机构：
[1] Univ Sci & Technol China, Dept Polymer Sci & Engn, Anhua 230026, Peoples R China
来源：
POLYMER INTERNATIONAL | 2004年 / 53卷 / 10期
关键词：
chitosan; phthaloylchitosan; methyl methacrylate; graft copolymers; gamma-irradiation;
D O I：
10.1002/pi.1570
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The graft copolymerization of methyl methacrylate (MMA) onto chitosan was tried via a new protection-graft-deprotection procedure. Because the intermediate phthaloylchitosan was soluble in organic solvents, the graft copolymerization was carried out in a homogeneous system. Grafting was initiated by y-irradiation. The graft percentage extent was dependent on the irradiation dose and the concentration of MMA monomer, and copolymers with grafting above 100% were readily prepared. The graft copolymers exhibited a high affinity not only for aqueous acid but also for some organic solvents. Differential scanning calorimetry measurements revealed the presence of a glass transition phenomenon, which could be ascribed to the poly(methyl methacrylate) side-chains. (C) 2004 Society of Chemical Industry
引用
收藏
页码：1491 / 1494
页数：4
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