PHOTODECOMPOSITION OF POLYSTYRENE ON LONG-WAVE ULTRAVIOLET-IRRADIATION - POSSIBLE MECHANISM OF INITIATION OF PHOTOOXIDATION

被引：78

作者：

LAWRENCE, JB ^{[1
]}

WEIR, NA ^{[1
]}

机构：

[1] LAKEHEAD UNIV,CHEM DEPT,THUNDER BAY,ONTARIO,CANADA

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1973年 / 11卷 / 01期

关键词：

POLYMERS - Decomposition - SOLUTIONS - ULTRAVIOLET RADIATION;

D O I：

10.1002/pol.1973.170110109

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 long-wave photo-oxidation of polystyrene in solution at 25 degree C has been studied osmometrically. Two types of chain scission have been observed: a purely photo process which occurs completely independently of oxygen and which is attributed to fission of photolabile groups in the polymer, and another process associated with random photolyses of the products of oxidation. The nature of the photolabile bond has been discussed, and there is some evidence for a peroxidic linkage arising from oxygen copolymerization in the chains. It is suggested that fission of the photolabile groups contributes to the initiation of the long-wave photooxidation of the polymer.

引用

页码：105 / 118

页数：14

共 23 条

[1] STUDY OF DEGRADATION OF POLYSTYRENE BY MEANS OF MASS SPECTROMETRY [J].