EVIDENCE OF RANDOM CHAIN SCISSIONS AT LOW-TEMPERATURES IN THE THERMAL-DEGRADATION OF ANIONIC POLYSTYRENES

被引：20
|
作者：
CHIANTORE, O [1 ]
GUAITA, M [1 ]
GRASSIE, N [1 ]
机构：
[1] UNIV GLASGOW,DEPT CHEM,GLASGOW G12 8QQ,SCOTLAND
来源：
POLYMER DEGRADATION AND STABILITY | 1985年 / 12卷 / 02期
关键词：
CHROMATOGRAPHIC ANALYSIS - Gel Permeation - POLYMERIZATION - THERMAL EFFECTS;
D O I：
10.1016/0141-3910(85)90073-4
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In the thermal degradation of some anionic polystyrene samples chain scission was found to occur in the temperature range 180-220 degree C. The resulting polymer molecules thereafter remain stable up to about 280 degree C, above which strong reductions occur in the degree of polymerization. It is shown that the low temperature degradation is due to the presence of a small fraction of weak links, which could be tentatively attributed to some oxidation of the polymers.
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页码：141 / 148
页数：8
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