Radiochemical oxidation of ethylene-propylene elastomers in the presence of some phenolic antioxidants

被引：64
|
作者：
Zaharescu, T
Giurginca, M
Jipa, S
机构：
[1] R&D Inst Elect Engn, Bucharest 74204, Romania
[2] CERELAST, Bucharest 79628, Romania
来源：
POLYMER DEGRADATION AND STABILITY | 1999年 / 63卷 / 02期
关键词：
D O I：
10.1016/S0141-3910(98)00100-1
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 oxidative degradation of gamma-irradiated ethylene-propylene elastomers (EPR and EPDM) in the presence of some phenolic antioxidants (Topanol OC, Cyanox 2246, Santonox R, Irganox 1010 and Irganox 1076) was studied. The stabilization activity of these antioxidants was related to the gel content of polymer matrix and the G values for radiochemically formed ketones, aldehydes, acids, esters and alcohols. The oxidation rates, obtained by IR measurements of C=O concentrations, provide an order of antirad efficiency. Some considerations concerning the influence of the chemical structure of antioxidants on the stabilization of elastomers and a radiochemical oxidation mechanism are presented. (C) 1999 Elsevier Science Ltd. All rights reserved.
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页码：245 / 251
页数：7
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