Synthesis and in vitro degradation study of poly(ethylene terephthalate)/poly(ethylene glycol) (PET/PEG) multiblock copolymer

被引：49
|
作者：
Qian, ZY [1 ]
Li, S [1 ]
He, Y [1 ]
Liu, XB [1 ]
机构：
[1] Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China
来源：
POLYMER DEGRADATION AND STABILITY | 2004年 / 83卷 / 01期
关键词：
block copolymer; PET/PEG; thermal property; hydrolytic degradation; poly(ether-ester)s;
D O I：
10.1016/S0141-3910(03)00229-5
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Hydrolytically degradable PET/PEG block copolymer was synthesized by the macromolecular transesterification method from PET and PEG. Non-isothermal crystallization behavior of the copolymers was investigated by differential scanning calorimetry (DSC). Water absorption and in vitro degradation behaviour of these copolymers were studied in detail. When hydrophilic PEG was incorporated into the PET chain, water absorption increased. With the increase in PEG concentration, the degradation rate increased accordingly. PEG molecular weight has different effects on PET/PEG copolymers' degradation rate. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：93 / 100
页数：8
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