Synthesis and characterization of hydroxy-terminated [RS]-poly(3-hydroxybutyrate) and its utilization to block copolymerization with L-lactide to obtain a biodegradable thermoplastic elastomer

被引：117

作者：

Hiki, S ^{[1
]}

Miyamoto, M ^{[1
]}

Kimura, Y ^{[1
]}

机构：

[1] Kyoto Inst Technol, Dept Polymer Sci & Engn, Sakyo Ku, Kyoto 6068585, Japan

来源：

POLYMER | 2000年 / 41卷 / 20期

关键词：

poly(3-hydroxybutyrate); ring-opening polymerization; telechelic polymer;

D O I：

10.1016/S0032-3861(00)00086-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A telechelic poly([RS]-3-hydroxybutyrate) ([RS]-PHB) was synthesized by the ring-opening polymerization of [RS]-beta-butyrolactone (PBL) in the presence of 1,4-butanediol (BD) with distannoxane as the catalyst. This polymer was found to be terminated by secondary hydroxyl groups, having an (oxytetramethylen)oxy group in the main chain. It was subjected to block copolymerization with L-lactide by the catalysis of tin (II) octoate to obtain an A-B-A type triblock copolyester comprising poly(L-lactide) (A) and [RS]-PHB (B). In this block copolymerization, the molecular weight and the unit composition of the produced copolymer were successfully controlled by changing the lactide/[RS]-PHB ratio in feed. its: characterization revealed that this block copolymer has high potential for use as biodegradable thermoplastic elastomer. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：7369 / 7379

页数：11

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