Calculation of activation energy from fraction of bonds broken for thermal degradation of polyethylene

被引：50
作者：
Gao, ZM
Amasaki, I
Kaneko, T
Nakada, M
机构：
[1] Chiba Inst Technol, Dept Chem, Narashino, Chiba 2750023, Japan
[2] Chiba Inst Technol, Dept Elect Engn, Narashino, Chiba 2750016, Japan
来源：
POLYMER DEGRADATION AND STABILITY | 2003年 / 81卷 / 01期
关键词：
fraction of bonds broken; beta scission; boiling point; activation energy; polyethylene;
D O I：
10.1016/S0141-3910(03)00081-8
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 fraction of bonds broken in thermal degradation of polyethylene was estimated. Activation energy of the degradation was then calculated from the fraction of bonds broken. It was found that the activation energy thus obtained is close to the values for beta C-C bond scissions and beta C-H bond scissions of hydrocarbon radicals. beta C-H bond scission of radicals is proposed as part of the mechanism of thermal degradation of polyethylene, which provides an understanding of detail of hydrogen transfer in the polymer melt and provides a route for hydrogen gas formation in pyrolysis of polyethylene. (C) 2003 Elsevier Science Ltd. All rights reserved.
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收藏
页码：125 / 130
页数：6
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