INFLUENCE OF ORIENTATION ON THE PHOTOOXIDATION OF POLY(VINYL CHLORIDE)

被引：12

作者：

BELLENGER, V ^{[1
]}

VERDU, J ^{[1
]}

MARTINEZ, G ^{[1
]}

MILLAN, J ^{[1
]}

机构：

[1] CSIC,INST CIENCIA & TECHNOL POLIMEROS,E-29006 MADRID,SPAIN

来源：

POLYMER DEGRADATION AND STABILITY | 1990年 / 28卷 / 01期

关键词：

D O I：

10.1016/0141-3910(90)90051-8

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

PVC films were oriented by stretching above Tg at elongation ratios ranging from 1 to 8, and quenched under tension. Their photo-oxidation rates in the solar UV range (γ≥300 nm), were then compared with those of control samples of the same thickness. It appeared clearly that the photo-sensitivity increases with the degree of orientation characterized by infrared dichroism. This result was explained in terms of build-up, during stretching, of conformations which are especially reactive towards hydrogen abstraction by radicals. © 1990.

引用

页码：53 / 65

页数：13

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