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
2008 Europhysics letters  
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 ≈ 1). A three-phase coexistence region is experimentally observed, previously only reported for colloidpolymer mixtures with smaller polymer chains (q 0.6). A recently developed generalized freevolume theory (GFVT) for mixtures of hard spheres and non-adsorbing excluded-volume polymer chains gives a quantitative description
more » ... itative description of the phase diagram. Monte Carlo simulations also agree well with experiment.
doi:10.1209/0295-5075/82/68002 fatcat:or2cmkniyvgl7ptrd4jprsd3ra