Rheology of a dilute emulsion of surfactant-covered spherical drops

J. Blawzdziewicz, P. Vlahovska, M. Loewenberg

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

The rheology of a diluted emulsion of surfactant-covered spherical drops has been investigated. A diluted film of insoluble surfactant is assumed. A matrix formulation of the problem is derived and analyzed by perturbation expansions for low- and high-shear rates, and for high-viscosity drops; the high-viscosity expansion converges rapidly for a wide range of parameters. Our theory provides a quantitative description of shear thinning and normal stress differences that occur as a result of surfactant redistribution.

Original languageEnglish
Pages (from-to)50-85
Number of pages36
JournalPhysica A: Statistical Mechanics and its Applications
Volume276
Issue number1
DOIs
StatePublished - Feb 1 2000

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