THERMAL-DEGRADATION OF POLY(METHYL METHACRYLATE) .4. RANDOM SIDE-GROUP SCISSION

被引：189

作者：

MANRING, LE

机构：

[1] Central Research and Development Department, Experimental Station, E. I. du Pont de Nemours & Company, Inc., Wilmington

来源：

MACROMOLECULES | 1991年 / 24卷 / 11期

关键词：

D O I：

10.1021/ma00011a040

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

It has long been accepted that the thermal degradation of saturated PMMA (PMMA-H) is initiated by a main-chain scission. In this paper it is proposed that a side-group scission of a methoxycarbonyl group initiates PMMA-H degradation. Side-group scission is favored due to a large "cage" recombination effect which reduces the contribution of main-chain scission. It is anticipated that side-group scission will initiate polymer degradation whenever side-group bonds are of similar energy or weaker than main-chain bonds.

引用

页码：3304 / 3309

页数：6