Positron annihilation studies of physical ageing in polycarbonate

被引：21

作者：

Davis, WJ ^{[1
]}

Pethrick, RA ^{[1
]}

机构：

[1] Univ Strathclyde, Dept Pure & Appl Chem, Glasgow G1 1XL, Lanark, Scotland

来源：

EUROPEAN POLYMER JOURNAL | 1998年 / 34卷 / 12期

关键词：

D O I：

10.1016/S0014-3057(98)00046-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Variations in the ortho-positron annihilation lifetime and Doppler broadening behaviour of polycarbonate are examined as a function of isothermal and isochronous ageing over the temperature range 303 K to 393 K over a period of 64 days. The molecular origins of the changes observed are discussed and data fitted to models based on structural relaxation of the quenched polymer matrix. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1747 / 1754

页数：8

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