Measurement of Monomer Reactivity Ratios of D,L-3-Methylglycolide with Glycolide or D,L-Lactide

被引：0

作者：

Chang Ming DONG

Kun Yuan QIU

Zhong Wei GU

Xin De FENG Department of Polymer Science and Engineering

机构：

来源：

ChineseChemicalLetters | 2000年 / 09期

基金：

中国国家自然科学基金;

关键词：

D; L-3-methylglycolide; glycolide; L-lactide; ring-opening copolymerization; monomer reactivity ratios;

D O I：

暂无

中图分类号：

O643 [化学动力学、催化作用];

学科分类号：

070304 ; 081704 ;

摘要：

For monomer reactivity ratios study, the copolymerization of D,L-3-methylglycolide (MG) with glycolide (GA) or D,L-lactide (LA) was carried out in bulk to a certain low conversion in the presence of stannous octoate at 140 ℃. The copolymer compositions were determined by ~1H NMR spectroscopy. The monomer reactivity ratios were evaluated by Fineman-Ross method, Kelen-Tudos method and linear least-squares method. The monomer reactivity ratios of D,L-3- methylglycolide and glycolide or D,L-lactide are rmg = 0.73, rga = 1.47, rmg = 1.71, r1a.= 0.92, respectively.

引用

页码：815 / 818

页数：4