Tg in confined systems:: A free volume approach

被引：6

作者：

Rault, J ^{[1
]}

机构：

[1] Univ Paris 11, F-91405 Orsay, France

来源：

JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS | 2003年 / B42卷 / 06期

关键词：

polymer; glass transition; confinement; free volume;

D O I：

10.1081/MB-120024817

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In glass-forming materials confined in films or pores of small dimension, the glass transition temperature T-g is depressed or increased depending on the nature of the interactions at the interface. It is shown that these effects, observed in polymers and simple liquids, can be interpreted in the framework of the free volume model. Similar effects of confinement on the glass and melting transitions are stressed; this permits prediction of the variations of the cooperative molecular motions a with temperature.

引用

页码：1235 / 1247

页数：13

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