THE ROLE OF SOLVENT VISCOSITY IN DILUTE-SOLUTION POLYMER RHEOLOGY

被引：15
|
作者：
MANKE, CW [1 ]
WILLIAMS, MC [1 ]
机构：
[1] UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720
来源：
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | 1985年 / 19卷 / 01期
关键词：
FLOW OF FLUIDS - Non Newtonian - SOLVENTS - Viscosity - VISCOMETERS;
D O I：
10.1016/0377-0257(85)87011-7
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Capillary viscometry was performed on dilute non-Newtonian solutions of monodisperse polystyrene in theta solvents. The solvents, blends of low-molecular-weight polystyrene with styrene, had viscosities ( eta //s) that were varied from 0. 22-27 Pa s. Data reduction of the dilute limit, left bracket eta right bracket / left bracket eta //0 right bracket vs. beta equals ( eta //0) eta //sM// gamma /RT (where gamma is shear rate) revealed a parametric dependence on eta //s that has not before been reported and is not predicted by most molecular theories of polymer dynamics. It is suggested that an internal viscosity model can explain such a phenomenon.
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页码：43 / 52
页数：10
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