VISCOSITY METHOD FOR THE DETERMINATION OF THE THICKNESS OF SOLVATION LAYERS NEAR PARTICLES DISPERSED IN A LIQUID

Shaoxian Song (), Yimin Zhang and Tomlinson Fort
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Shaoxian Song: Department of Resources Engineering, Wuhan University of Science and Technology, Av. Heping 947, Wuhan, 430081, P. R. China;
Yimin Zhang: Department of Resources Engineering, Wuhan University of Science and Technology, Av. Heping 947, Wuhan, 430081, P. R. China;
Tomlinson Fort: Department of Chemical Engineering, Vanderbilt University, Nashville, TN 37235, USA

Surface Review and Letters (SRL), 2005, vol. 12, issue 03, 457-462

Abstract: In this paper, we present a method for determining the thickness of solvation layers near spherical particles dispersed in a liquid through measurements of the viscosity of the dispersion as a function of the volume fraction of the dry particles in the dispersion and the size distribution of the particles. It is termedviscosity method. The theoretical derivation for the method is based on Einstein's theory of viscosity of dispersions, while two assumptions are made:1. Solvation layers contribute to increasing the viscosity of the dispersion inctimes as the same volume of rigid solid spheres.2. The thickness of solvation layers is the same near every chemically similar spherical particle in a given dispersion.

Keywords: Solvation layers; viscosity of dispersions; layer thickness (search for similar items in EconPapers)
Date: 2005
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DOI: 10.1142/S0218625X05007293

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