Phase behaviour of colloids with short-range repulsions plus nonadsorbing polymer chains

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The colloidal gas-liquid phase behaviour has been studied for aqueous mixtures of well-defined spherical particles with short-ranged repulsions mixed with relatively monodisperse poly(ethylene oxide) polymers. We show that our set of experimental phase diagrams are in quantitative agreement with theoretical predictions using generalized free volume theory [G. J. Fleer and R. Tuinier, Phys. Rev. E, 2007, 76, 041802]. The determination of the equilibrium composition of coexisting phases reveals qualitative deviations between the two, for which we propose a tentative explanation.


  • Kitty van Gruijthuijsen
  • Remco Tuinier
  • Joseph M. Brader
  • Anna Stradner
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Chemistry
Original languageEnglish
Pages (from-to)9977-9982
JournalSoft Matter
Issue number42
Publication statusPublished - 2013
Publication categoryResearch