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Viscosity and structural relaxation in concentrated hard-sphere colloids

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Original languageEnglish
Pages (from-to)179-189
Number of pages11
JournalJournal of non-Newtonian fluid mechanics
Volume67
Publication statusPublished - Nov 1996
EventWorkshop on Unresolved Experimental Dilemmas in the Dynamics of Complex Fluids - CAMBRIDGE, United Kingdom
Duration: 1 Jan 1996 → …

Abstract

Measurements of the low-shear-rate viscosity of a model hard-sphere suspension are presented. Suspension volume fractions are calibrated with respect to the thermodynamic disorder to order, or crystallization, transition. At freezing, the low-shear suspension viscosity is found to be approximate to 53 times that of the solvent. This result is discussed in the light of the considerable literature on hard-sphere suspension viscosity. Particle dynamics in the same suspensions is studied by two-colour dynamic light scattering. We find that the inverse structural relaxation time scales exactly as the suspension viscosity.

    Research areas

  • hard-sphere colloids, structural relaxation, viscosity, BROWNIAN-MOTION, DISPERSIONS, SUSPENSIONS, SCATTERING

ID: 16976341