PHOTOOXIDATION OF POLYPROPYLENE UNDER LOAD

被引：22

作者：

BAUMHARDTNETO, R

DEPAOLI, MA

机构：

[1] UNIV ESTADUAL CAMPINAS,INST QUIM,CX POSTAL 6154,BR-13081 CAMPINAS,SP,BRAZIL

[2] UNIV FED RIO GRANDE SUL,INST QUIM,BR-91500 PORTO ALEGRE,RS,BRAZIL

来源：

POLYMER DEGRADATION AND STABILITY | 1993年 / 40卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1016/0141-3910(93)90190-T

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We have studied the photo-oxidation of isotactic polypropylene films under mechanical load. These films were either slightly or highly oriented, with or without photoprotecting agents. The oxidation reactions were followed by carbonyl index determinations from IR spectra. The results indicate that the oxidation rate can be related to mechanical load, polymer morphology and the intensity of the light source. In the earlier stages of the photo-oxidation, the static load can act as a protector against oxidation, in a similar manner to that observed with highly oriented samples.

引用

页码：53 / 58

页数：6

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