THERMAL-DEGRADATION OF GAMMA-IRRADIATED POLYMERS .2. POLYMETHACRYLONITRILE

被引：3

作者：

RAUF, MA ^{[1
]}

MCNEILL, IC ^{[1
]}

机构：

[1] UNIV GLASGOW,DEPT CHEM,POLYMER RES GRP,GLASGOW G12 8QQ,SCOTLAND

来源：

POLYMER DEGRADATION AND STABILITY | 1993年 / 41卷 / 01期

关键词：

D O I：

10.1016/0141-3910(93)90070-Y

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 effect of gamma-irradiation on the thermal stability of polymethacrylonitrile has been examined for doses from 20 to 300 kGy. It has been found that, on irradiation, small amounts of hydrogen cyanide, methane and hydrogen are evolved. The effect of irradiation is to raise slightly the temperature required for release of volatile products from the polymer. Pure polymethacrylonitrile degrades thermally to give monomer and traces of hydrogen cyanide, isobutene and propane. The irradiated polymer, unlike the pure unirradiated material, discolours on heating, the amounts of these trace products increase and ammonia and carbon dioxide are formed in addition to the monomer. The reactions which occur during irradiation and subsequent thermal degradation are discussed.

引用

页码：117 / 122

页数：6

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