Phase behavior of mixtures of colloidal platelets and nonadsorbing polymers

Shu-Dong Zhang, P.A. Reynolds, J.S. Van Duijneveldt

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

The phase behavior of a model system of colloidal platelets and nonadsorbing polymers is studied using computer simulations and perturbation theory. The equation of state for the pure platelet reference system is obtained by Monte Carlo simulations, and the free volume fraction accessible to polymers is measured by a trial insertion method. The free volume fraction is also calculated using scaled particle theory. Subsequently, the phase diagram for platelet-polymer mixtures is calculated. For a platelet aspect ratio L/D=0.1 and a polymer to platelet size ratio d/D>0.2, we observe coexistence between two isotropic phases with different densities. For smaller polymers d/D
Original languageEnglish
Pages (from-to)9947-9958
Number of pages12
JournalJournal of Chemical Physics
Volume117
Issue number21
DOIs
Publication statusPublished - 01 Dec 2002

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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