CRYSTALLIZATION OF BISPHENOL-A POLYCARBONATE INDUCED BY ORGANIC SALTS: CHEMICAL MODIFICATION OF THE POLYMER. II. MODEL REACTIONS.

被引：10

作者：

Bailly, CH. ^{[1
]}

Legras, R. ^{[1
]}

Mercier, J.P. ^{[1
]}

机构：

[1] Univ Catholique de Louvain, Lab des, Hauts Polymeres, Louvain-la-Neuve,, Belg, Univ Catholique de Louvain, Lab des Hauts Polymeres, Louvain-la-Neuve, Belg

来源：

Journal of polymer science. Part A-2, Polymer physics | 1985年 / 23卷 / 02期

关键词：

Chemical reactions - CRYSTALS - Structure - ORGANIC COMPOUNDS - Chemistry - POLYMERS - Crystallization - Sodium compounds;

D O I：

10.1002/pol.1985.180230210

中图分类号：

学科分类号：

摘要：

Results of an experimental study are presented which show that in the presence of sodium o-chlorobenzoate, bisphenol-A diphenylcarbonate (BADPC) undergoes complex chemical modifications from 170 degree C. Reaction between BADPC and minute amounts of salt produces sodium phenoxide end groups which undergo a fast exchange reaction with the carbonate groups of BADPC. In a closed system, an equilibrium molecular weight distribution is progressively attained which agrees fairly well with the one predicted from a simple model based on Bernoulli statistics. In an open system, the equilibrium is continuously displaced by the evaporation of volatile diphenyl carbonate. This leads to a steady increase of the molecular weight.

引用

页码：355 / 366