Polymer weathering: Photo-oxidation

被引:311
作者
Feldman, D [1 ]
机构
[1] Concordia Univ, Dept Bldg Civil & Environm Engn, Montreal, PQ H3M 1G8, Canada
关键词
photo-oxidation; polyolefins; PVC; photostabilization;
D O I
10.1023/A:1021148205366
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
As the polymer industry evolved, considerable effort was made to understand the degradation processes of high polymers during weathering and ways were found to inhibit or at least retard their chemical modification and loss of their physical and mechanical properties. Weathering is particularly severe for polymers because it combines the photophysical and photochemical effects of ultraviolet radiation with oxidative and hydrolytic effects of the outdoor environment. This article discusses photo-oxidation degradation (the behavior of polymers as a result of outdoor factors) and mainly concentrates on the photo-oxidative degradation of polyolefins and poly(vinyl) chloride. Polymer photostabilization with ultraviolet screeners, quenchers, hydroperoxide decomposers, and radical scavengers is also described.
引用
收藏
页码:163 / 173
页数:11
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