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Dynamics of Phase Separation of Binary Fluid Mixtures in the Presence of Surfactants

Published online by Cambridge University Press:  15 February 2011

Mohamed Laradji ,
Ole G. Mouritsen ,
Søren Toxvaerd  and
Martin J. Zuckermann
Mohamed Laradji
Affiliation:
Center for Simulational Physics, The University of Georgia, Athen, GA 30602-2451
Ole G. Mouritsen
Affiliation:
Department of Physical Chemistry, The Technical University of Denmark, DK-2800 Lyngby, Denmark
Søren Toxvaerd
Affiliation:
Department of Chemistry, H.C. Ørsted Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
Martin J. Zuckermann
Affiliation:
Center for the Physics of Materials and Department of Physics, McGill University, 3600 rue University, Montréal, Québec, Canada H3A 2T8
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Abstract

The dynamics of phase separation of binary fluid mixtures in the presence of surfactants is studied via molecular dynamics simulations. In contrast to phase separation in pure binary fluid mixtures, which is characterized by an algebraic time dependence of the average domain size, mixtures containing surfactants exhibit nonalgebraic slow dynamics. At very late times, the average domain size saturates at a value inversely proportional to the surfactant concentration. Despite the fact that these systems only microphase separate, a dynamical scaling was observed at late times.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 366: Symposium N – Dynamics in Small Confining Systems , 1994 , 57
Copyright
Copyright © Materials Research Society 1995

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