RADIATION-CHEMISTRY OF POLY(ETHYL METHACRYLATE) .4. EFFECT OF IRRADIATION TEMPERATURE

被引：0
|
作者：
DENIZ, V [1 ]
GUVEN, O [1 ]
机构：
[1] HACETTEPE UNIV,DEPT CHEM,ANKARA 06532,TURKEY
来源：
RADIATION PHYSICS AND CHEMISTRY | 1991年 / 37卷 / 02期
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中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of irradiation temperature on radiation induced degradation of poly(ethyl methacrylate) sample with a most probable distribution has been investigated. Chain scission yields, G(S), have been determined in the temperature interval of 0-140-degrees-C. The activation energy of chain scission was calculated to be 10.41 +/- 2.03 kJ/mol. No change in this value was observed when the glass transition temperature of 72-degrees-C was overcrossed. Low G(S) values determined at 120 and 140-degrees-C were explained to be due to unzipping reactions accompanying the main chain scissions.
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页码：359 / 361
页数：3
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