Synthesis and Characterization of Copoly(succinic anhydride-ethylene oxide)-Poly(L-lactide) Block Copolymer

被引：0
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作者：
Yasukatsu Maeda
Atsuyoshi Nakayama
Ioannis Arvanitoyannis
Norioki Kawasaki
Kazuko Hayashi
Noboru Yamamoto
Seiichi Aiba
机构：
[1] Industrial Technology Center of Wakayama Prefecture,Department of Material Technology
[2] WINTEC,Department of Organic Materials
[3] Osaka National Research Institute,Faculty of Agriculture, Department of Food & Science Technology
[4] AIST,undefined
[5] Aristotelian University of Thessaloniki,undefined
来源：
Polymer Journal | 2000年 / 32卷
关键词：
Poly(; -lactide); Synthesis; Block Polymer; Biodegradable;
D O I：
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中图分类号：
学科分类号：
摘要：
The polymerization of L-lactide (LA) was carried out in the presence of tin(II) 2-ethylhexanoate, Sn-(Oct)2 and copoly[succinic anhydride (SA)-ethylene oxide (EO)] which has a hydroxyl end group. The synthesized copolymers were characterized by GPC, 1H NMR, 13C NMR, and DSC. The products were block copolymers consisting of copoly(SA-EO) and poly(L-lactide) (PLA) segments. Optical micrographs of the copolymer films confirmed the presence of spherulitic morphology. Spherulite size was enhanced with increase in the LA content in the copolymers. The block copolymers were hydrolyzed with or without lipase and biodegraded by enzymes from microorganisms in activated sludge. Hydrolyzability decreased with increase in LA content in the block copolymers. The solubility of the block copolymers containing LA segment in tetrahydrofuran (THF) was higher than that of copoly(SA-EO).
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页码：307 / 315
页数：8
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