A model of traps for structural relaxation in glassy polymers

被引：13

作者：

Drozdov, AD ^{[1
]}

机构：

[1] Inst Ind Math, IL-84311 Beersheba, Israel

来源：

PHYSICS LETTERS A | 1999年 / 258卷 / 2-3期

关键词：

structural relaxation; glassy polymers; cooperative rearrangement; trapping concept;

D O I：

10.1016/S0375-9601(99)00309-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Constitutive equations are derived for enthalpy and volume recovery in amorphous glassy polymers after thermal treatment. The model is based on the concept of cooperative relaxation, where flow units are assumed to change their traps at random times. Fair agreement is demonstrated between numerical predictions and observations in calorimetric and dilatometric tests for polycarbonate, polystyrene and poly(vinyl acetate). (C) 1999 Elsevier Science B.V. All rights reserved.

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页码：158 / 170

页数：13

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