Thermo-oxidative degradation and radio-processing of ethylene vinyl acetate elastomers

被引：25
|
作者：
Giurginca, M
Popa, L
Zaharescu, T
机构：
[1] Adv Res Inst Elect Engn, Bucharest 74204, Romania
[2] Anticorosiv SA, Bucharest 74584, Romania
[3] Univ Polytech, Bucharest 78126, Romania
来源：
POLYMER DEGRADATION AND STABILITY | 2003年 / 82卷 / 03期
关键词：
ethylene vinyl acetate; degradation; FT-IR spectroscopy; DSC;
D O I：
10.1016/S0141-3910(03)00200-3
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Thermal and radiation degradation of three ethylene vinyl acetate elastomers containing 28 and 33% VA were studied by IR spectroscopy and thermal analysis. Kinetic parameters: induction time, oxidation rate, reaction order and activation energy of oxidation were calculated on the basis of the modification in the carbonyl band absorbance during thermal degradation. Temperatures that characterize various processes occurring during degradation are pointed out. The progress in radiochemical degradation was assessed by changes in the 1735 cm(-1) band relative to a standard (1475 cm(-1)). A mechanism of degradation is proposed. (C) 2003 Elsevier Ltd. All rights reserved.
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页码：463 / 466
页数：4
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