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

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

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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/a1). A three-phase coexistence region is experimentally observed, previously only reported for colloid-polymer mixtures with smaller polymer chains (q0.6). 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
Original languageEnglish
Article number68002
JournalEurophysics Letters
Volume82
DOIs
Publication statusPublished - 2008

Keywords

  • volume-restriction
  • behavior
  • spheres
  • dispersions
  • suspensions
  • cyclohexane
  • separations
  • mechanism
  • chains
  • latex

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    Tuinier, R., Smith, P. A., Poon, W. C. K., Egelhaaf, S. U., Aarts, D. G. A. L., Lekkerkerker, H. N. W., & Fleer, G. J. (2008). Phase diagram for a mixture of colloids and polymers with equal size. Europhysics Letters, 82, [68002]. https://doi.org/10.1209/0295-5075/82/68002