Enthalpy relaxation in glassy polymers

被引：2
|
作者：
Drozdov, AD [1 ]
机构：
[1] Inst Ind Mat, IL-84311 Beer Sheva, Israel
来源：
POLYMER BULLETIN | 2000年 / 44卷 / 03期
关键词：
D O I：
10.1007/s002890050613
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Constitutive equations are derived for enthalpy recovery in amorphous glassy polymers. The model is based on the concept of cooperative relaxation which treats a polymer as an ensemble of flow units rearranging at random times. The rate of rearrangement is determined by the Eyring theory of thermally activated processes. Fair ageement is demonstrated between results of numerical simulation and experimental data for polycarbonate, poly(ether imide), poly(methyl methacrylate), polystyrene and a glycerol glass.
引用
收藏
页码：353 / 360
页数：8
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