INFLUENCE OF CONCENTRATION ON THE ACTIVATION-ENERGY FOR DIFFUSION IN POLYMER SOLVENT SYSTEMS

被引：33

作者：

ZIELINSKI, JM ^{[1
]}

DUDA, JL ^{[1
]}

机构：

[1] PENN STATE UNIV,DEPT CHEM ENGN,UNIV PK,PA 16802

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1992年 / 30卷 / 10期

关键词：

DIFFUSION OF SOLVENTS IN POLYSTYRENE-SOLVENT SYSTEMS; POLYSTYRENE; SELF-DIFFUSION OF BENZENE; TOLUENE; AND ETHYLBENZENE IN; FREE-VOLUME;

D O I：

10.1002/polb.1992.090301002

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 self-diffusion of benzene, toluene, and ethylbenzene in polystyrene have been analyzed using the Vrentas/Duda free-volume diffusion model. Diffusion coefficient predictions suggest an exponential concentration dependence of the activation energy required to overcome attractive forces, E. Without the use of any diffusion data approximating E as zero over the entire concentration range yields self-diffusion coefficient predictions which are in good agreement with experimental data.

引用

页码：1081 / 1088

页数：8

共 27 条

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