Quantitative study of photocatalyzed oxidation of ethylene-propylene rubber and atactic polypropylene

被引：0
|
作者：
Lacoste, J [1 ]
Ladsous, P
Dieppedale, M
Arnaud, R
机构：
[1] Univ Blaise Pascal, Photochim Mol & Macromol Lab, CNRS, UMR 6505, F-63177 Aubiere, France
[2] ENS Chim Clemont Ferrand, F-63177 Aubiere, France
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 1998年 / 69卷 / 09期
关键词：
photocatalyzed oxidation; ethylene-propylene rubber; atactic polypropylene;
D O I：
暂无
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 effect of photoactive pigments such as ZnO, CdS, and TiO2 on the photoorddation ( with and without water vapor) of ethylene - propylene rubber and atactic polypropylene were examined. The effects of surface treatment (passivation) and low granulometry (nanopigments) were also studied for TiO2. A drastic increase of ketone and an inhibition of carboxylic acid formation for ZnO filled polymers were revealed and quantitatively measured by using derivatization reactions. Such a phenomenon, as well as a small decrease of average molecular weight, were explained by a modification of the ZnO decomposition mechanism of tertiary hydroperoxides. (C) 1998 John Wiley & Sons, Inc. J AppI Polym Sci 69: 1681-1689, 1998.
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收藏
页码：1681 / 1689
页数：9
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