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 College of Chemistry and Molecular Engineering Peking University Beijing National Research Institute for Family Planning Beijing ^{[100871
,100081
]}

机构：

来源：

ChineseChemicalLetters | 2000年 / 09期

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