Effect of the intramolecular chain transfer to polymer on PLP/SEC experiments of alkyl acrylates

被引：104

作者：

Arzamendi, G

Plessis, C

Leiza, JR

Asua, JM

机构：

[1] Univ Basque Country, Fac Ciencias Quim, Dept Quim Aplicada, Inst Polymer Mat, E-20080 San Sebastian, Spain

[2] Univ Basque Country, Fac Ciencias Quim, Dept Quim Aplicada, Grp Ingn Quim, E-20080 San Sebastian, Spain

[3] Univ Publ Navarra, Dept Quim Aplicada, E-31006 Pamplona, Spain

来源：

MACROMOLECULAR THEORY AND SIMULATIONS | 2003年 / 12卷 / 05期

关键词：

backbiting; branched; kinetics (polym.); poly(butyl acrylate); pulsed-laser polymerization;

D O I：

10.1002/mats.200390030

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Pulsed-laser polymerization (PLP) has been adopted by IUPAC as the method of choice for the determination of propagation rate constants (k(p)). However, the method has failed in the polymerization of alkyl acrylates at temperatures above 30 degreesC. In this work, the PLP experiments were analyzed by simulation using a Monte Carlo algorithm. It was found that the experimental difficulties encountered to accurately determine k(p) at temperatures above 30 degreesC were caused by extensive intramolecular chain transfer. This mechanism is not operative at lower temperatures because of its high activation energy.

引用

页码：315 / 324

页数：10

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