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Effect of Stationary Particles on the Phase Separation of Binary Fluids

Published online by Cambridge University Press:  17 March 2011

Domenico Suppa ,
Olga Kuksenok ,
Anna C. Balazs  and
J.M. Yeomans
Domenico Suppa
Affiliation:
Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15261, U.S.A.
Olga Kuksenok
Affiliation:
Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15261, U.S.A.
Anna C. Balazs
Affiliation:
Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA 15261, U.S.A.
J.M. Yeomans
Affiliation:
Theoretical Physics, University of Oxford, 1 Keble Road, Oxford, OX1 3NP, U.K.
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Abstract

Phase separating binary fluids with the addition of immobile particles, which act as osmotic force centres, were simulated using a Lattice Boltzmann model in two dimensions. In the hydrodynamic over-damped limit, where the flow is entirely driven by capillary effects, the presence of particles that are preferentially wetted by one of the fluid components significantly affects the kinetics of the growth of the fluid domains. The late time dynamics is governed by the wetting interactions and the final size of the domains can be tailored by varying the strength of the particles-fluid interaction as well as the particles concentration. These features are predicted within a simple theoretical model and are amenable of experimental checks.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 710: Symposia DD – Polymer Interfaces and Thin Films , 2001 , DD6.7.1
Copyright
Copyright © Materials Research Society 2002

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References

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