Steady shear rheology of dilute polystyrene particle gels

被引：0
|
作者：
Rudy Folkersma
Alois J. G. van Diemen
Jozua Laven
Hans N. Stein
机构：
[1] Laboratory of Colloid Chemistry Department of Chemical Engineering Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands e-mail: r.folkersma@tue.nl Tel.: +31 402473066 Fax: +31 402463966,
来源：
Rheologica Acta | 1999年 / 38卷
关键词：
Key words Gel; Steady shear; Giant floc model;
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摘要：
This paper describes an experimental study on dispersions of monodisperse polystyrene (PS) spheres with a typical radius of 1 μm, dispersed in an electrolyte at high ionic strength, screening the electrostatic repulsion. These suspensions gelate at rest even at low volume fractions of PS particles. The density of the particles is matched with the solvent by using deuterium oxide for volume fractions φ≤0.117. Steady-state flow curves, viscosity as a function of shear rate, are measured and reported for 0.014<φ<0.322. The measured flow curves are analyzed on the basis of two models:
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页码：257 / 267
页数：10
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