Finite size effect on glass transition temperatures

被引：49

作者：

Jiang, Q ^{[1
]}

Shi, HX ^{[1
]}

Li, JC ^{[1
]}

机构：

[1] Jilin Univ Technol, Dept Mat Sci & Engn, Changchun 130025, Peoples R China

来源：

THIN SOLID FILMS | 1999年 / 354卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

glass; polymers; surface and interface states; surface thermodynamics;

D O I：

10.1016/S0040-6090(99)00537-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simple and unified model, free of any adjustable parameters, is developed for the finite size effect on glass transition temperatures of polymers and organic particles. As the thickness of polymer thin films and the radius of organic particles decrease, their glass transition temperatures decrease. For polymers, this decrease is independent of their molecular weight, but dependent on the correlation length for intermolecular cooperative rearrangement and the presence of substrates. The model predictions are consistent with available experimental results on size dependence of the glass transition temperatures for free-standing polystyrene thin films, polystyrene films supported on passivated substrates and o-terphenyl and benzyl alcohol nanoparticles. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：283 / 286

页数：4

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