Kinetics of the ring-opening polymerization of D,L-lactide using zinc (II) octoate as catalyst

被引：17

作者：

Mazarro, Rosario ^{[2
]}

Gracia, Ignacio ^{[1
]}

Rodriguez, Juan F. ^{[1
]}

Storti, Giuseppe ^{[3
]}

Morbidelli, Massimo ^{[2
]}

机构：

[1] Univ Castilla La Mancha, Fac Chem, Dept Chem Engn, E-13071 Ciudad Real, Spain

[2] ETH, Inst Chem & Bioengn, CH-8093 Zurich, Switzerland

[3] Politecn Milan, Dipartimento Chim Mat & Ingn Chim Giulio Natta, I-20131 Milan, Italy

来源：

POLYMER INTERNATIONAL | 2012年 / 61卷 / 02期

关键词：

poly(D; L-lactide); ring-opening polymerization; zinc octoate; kinetics; thermal degradation; L-LACTIDE; EPSILON-CAPROLACTONE; DL-LACTIDE; INTERCHANGE REACTIONS; THERMAL-DEGRADATION; POLY(LACTIC ACID); MECHANISM; POLYLACTONES; THERMODYNAMICS; INITIATORS;

D O I：

10.1002/pi.3182

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The kinetics of ring-opening polymerization of D,L-lactide with 2-ethylhexanoic acid zinc (II) salt as catalyst and methanol as co-catalyst at different temperatures is investigated. A previously proposed kinetic model accounting for reactions such as activation, propagation, chain transfer, transesterification and thermal non-radical random chain scission has been applied to simulate the experimental results of conversion and average molecular weights. The relevance of some side reactions, mainly transesterifications and chain scission, has been verified all over the studied temperature range and the corresponding rate constants have been estimated. (C) 2011 Society of Chemical Industry

引用

页码：265 / 273

页数：9

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