The influence of oxygen pressure and temperature on the UV-degradation chemistry of polyethylene

被引：35

作者：

Gijsman, P ^{[1
]}

Sampers, J ^{[1
]}

机构：

[1] DSM Res, NL-6160 MD Geleen, Netherlands

来源：

POLYMER DEGRADATION AND STABILITY | 1997年 / 58卷 / 1-2期

关键词：

D O I：

10.1016/S0141-3910(97)00012-8

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The influence of the oxygen concentration and temperature on the UV-degradation chemistry of polyethylene is described. The degradations are characterized by measuring the oxygen uptake. the formation of CO and CO2, the FT-IR spectra and the mechanical properties. At high temperatures (40-50 degrees C) an increase in the oxygen pressure (air versus 100% oxygen atmosphere) leads to a decrease of IR detectable products and to a higher amount of reacted oxygen necessary to cause mechanical failure. However, at low temperatures (29 degrees C) the influence of oxygen pressure is negligible. The results are explained assuming that the initiation of the photo-degradation is due to charge transfer complexes. (C) 1997 Elsevier Science Limited.

引用

页码：55 / 59

页数：5

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