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

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

Research output: Contribution to journalArticlepeer-review

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.

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

Keywords

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

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