Synthesis and characterization of a brush-like copolymer of polylactide grafted onto chitosan

被引：62
|
作者：
Liu, Y [1 ]
Tian, F [1 ]
Hu, KA [1 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200030, Peoples R China
来源：
CARBOHYDRATE RESEARCH | 2004年 / 339卷 / 04期
关键词：
chitosan; polylactide; graft copolymer;
D O I：
10.1016/j.carres.2003.09.013
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
A brush-like poly(DL)-lactide grafted onto chitosan as the backbone was investigated. The graft copolymerization was carried out with triethylaluminum as catalyst in toluene at 70degreesC. It was found that a greater lactide content in the feeding ratio results in a higher grafting percentage. FTIR spectrometry, H-1 NMR, DSC scanning, and wide-angle X-ray scattering, respectively, are used to characterize these branch copolymers. A copolymer has a definite melting point when the molar feeding ratio of lactide to chitosan is more than 10:1, and the DeltaH of the copolymers increases with the feed ratio of lactide to chitosan in feeding. (C) 2003 Published by Elsevier Ltd.
引用
收藏
页码：845 / 851
页数：7
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