Aggregate size and viscoelastic property of a highly concentrated suspension

Issue title: 25th Anniversary Volume. Perspectives in Biorheology II. Festschrift for Syoten Oka

Guest editors: Eiichi Fukada and Takehiko Azuma

Article type: Research Article

Authors: Takaki, R. | Kurihara, T.

Affiliations: Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183, Japan

Abstract: Flow of Latex suspension with high concentration between plate glasses was observed through an optical microscope. Size of aggregates of Latex particles was estimated by measuring area of a region without particles behind an obstacle in the flow region (this technique had been developed by one of the authors). At the same time, viscosity and elasticity of the suspension were measured by a cone-plate viscometer, and relations between the aggregate size and these properties were obtained. A simple model based on the Stokes law of resistance and the Maxwell model for viscoelastic materials is proposed to explain these relations. The theoretical results agree with the present experiment.

Keywords: Aggregate, Suspension, Viscosity, Elasticity, Hele-Shaw flow

DOI: 10.3233/BIR-1988-251-227

Journal: Biorheology, vol. 25, no. 1-2, pp. 191-198, 1988