PHOTODEGRADATION OF POLYSTYRENE AND POLY(VINYL ACETATE) BLENDS .1. IRRADIATION OF PS/PVAC BLENDS BY POLYCHROMATIC-LIGHT

被引：39
|
作者：
KACZMAREK, H
机构：
[1] Faculty of Chemistry, Nicolaus Copernicus University, 87-100 Toruń
来源：
EUROPEAN POLYMER JOURNAL | 1995年 / 31卷 / 11期
关键词：
D O I：
10.1016/0014-3057(95)00094-1
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 photooxidative degradation of polystyrene, poly(vinyl acetate) and its blends under UV lamp (HPK) emitted highly energetic, polychromatic light (248-578 nm) and have been studied using mainly FT-IR and UV-VIS spectroscopy. It was found that the processes of photooxidation and photodegradation are accelerated in blends compared to pure PS and PVAc. Moreover, higher efficiencies of photocrosslinking and chromophores formation in all blends was observed. The composition of samples and their morphology has a big influence on the course of photooxidative degradation of PS/PVAc blends. The influence of the hydrogen bonds formed during photooxidation of blends on the improvement of miscibility of PS and PVAc was also discussed.
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页码：1037 / 1042
页数：6
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