Effect of solvent size on solvent self-diffusion in polymer-solvent systems

被引：70

作者：

Vrentas, JS

Vrentas, CM

Faridi, N

机构：

[1] Department of Chemical Engineering, Pennsylvania State University, University Park

来源：

MACROMOLECULES | 1996年 / 29卷 / 09期

关键词：

D O I：

10.1021/ma9511356

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The free-volume theory for solvent self-diffusion coefficients in polymer-solvent systems is modified to include a more general analysis of the effects of solvent size. The predictions of the theory are compared with self-diffusion data for a diverse set of solvents and four polymers, polystyrene, poly(vinyl acetate), poly(methyl methacrylate), and poly(p-methylstyrene). The new prediction of size effects is based on the consideration of the asymmetry of solvent molecules.

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页码：3272 / 3276

页数：5

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