Edinburgh Research Explorer

Phase diagram for a mixture of colloids and polymers with equal size

Research output: Contribution to journalArticle

  • R. Tuinier
  • P. A. Smith
  • Wilson Poon
  • S. U. Egelhaaf
  • D. G. A. L. Aarts
  • H. N. W. Lekkerkerker
  • G. J. Fleer

Related Edinburgh Organisations

Original languageEnglish
Article number68002
Pages (from-to)-
Number of pages5
JournalEurophysics Letters
Volume82
Issue number6
DOIs
StatePublished - Jun 2008

Abstract

We present the phase diagram of a colloid-polymer mixture in which the radius a of the colloidal spheres is approximately the same as the radius R of a polymer coil (q = R/a approximate to 1). A three-phase coexistence region is experimentally observed, previously only reported for colloid-polymer mixtures with smaller polymer chains (q less than or similar to 0.6). A recently developed generalized free-volume theory (GFVT) for mixtures of hard spheres and non-adsorbing excluded-volume polymer chains gives a quantitative description of the phase diagram. Monte Carlo simulations also agree well with experiment. Copyright (C) EPLA, 2008.

    Research areas

  • VOLUME-RESTRICTION, BEHAVIOR, SPHERES, DISPERSIONS, SUSPENSIONS, CYCLOHEXANE, SEPARATIONS, MECHANISM, CHAINS, LATEX

ID: 1488217