EFFECT OF HYDROSTATIC-PRESSURE ON POLYSTYRENE DIFFUSIVITY IN TOLUENE

被引：13

作者：

FREEMAN, BD

SOANE, DS

DENN, MM

机构：

[1] UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720

[2] UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,CTR ADV MAT,BERKELEY,CA 94720

来源：

MACROMOLECULES | 1990年 / 23卷 / 01期

关键词：

Diffusion--Pressure Effects - Light--Scattering - Oil Well Production--Enhanced Recovery - Polymers--Concentration - Toluene;

D O I：

10.1021/ma00203a042

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 pressure dependence of the mutual diffusion coefficient of selected polystyrene-in-toluene solutions is determined by dynamic light scattering. Decreases in the observed diffusivity with pressure can be explained by changes in the polymer concentration (due to solution compression) and decreases in the solvent fluidity (due to lowering of the system free volume). Quantitative correlations of diffusivity are established for different polymer concentrations and molecular weights, and the results are compared with theoretical predictions. © 1990 American Chemical Society. © 1990, American Chemical Society. All rights reserved.

引用

页码：245 / 251

页数：7

共 33 条

[1] DYNAMICAL PROPERTIES OF POLYMER-SOLUTIONS IN GOOD SOLVENT BY RAYLEIGH-SCATTERING EXPERIMENTS [J].