Phase behaviour of colloid-polymer mixtures
نویسندگان
چکیده
منابع مشابه
Phase Behaviour of Colloid + Polymer Mixtures
A new treatment of the phase behaviour of a colloid + nonadsorbing polymer mixture is described. The calculated phase diagrams show marked polymer partitioning between coexisting phases, an effect not considered in the usual effective-potential approaches to this problem. We also predict that under certain conditions an area of three-phase coexistence should appear in the phase diagram. Introdu...
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We examine the demixing transition in star-polymer-colloid mixtures for star arm numbers f=2,6,16,32 and different star-polymer-colloid size ratios 0.18< or =q< or =0.50. Theoretically, we solve the thermodynamically self-consistent Rogers-Young integral equations for binary mixtures using three effective pair potentials obtained from direct molecular computer simulations. The numerical results...
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Thermodynamic perturbation theory is used to calculate the free energies and resulting phase diagrams of binary systems of spherical colloidal particles and interacting polymer coils in a good solvent within an effective one-component representation of such mixtures, whereby the colloidal particles interact via a polymer-induced depletion potential. Monte Carlo simulations are used to test the ...
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We investigate the depletion-induced phase behavior of athermal colloid-star polymer mixtures on a fine lattice using grand canonical Monte Carlo simulations in the "protein limit," that is, where polymer dimensions exceed those of the colloid. We consider the influence of the star's functionality, f, the macroscopic size ratio, qr = 2Rg, s∕σc, where Rg, s is the radius of gyration of the star ...
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We calculate the phase diagrams of mixtures between hard-sphere colloids and star-polymers of arm numbers f 52,6,32 for different star-polymer–colloid size ratios 0.2<q<0.6 using an effective one-component description for the colloids in the presence of the stars. We map the full two-component system onto an effective one-component system by inverting numerically the Ornstein–Zernike equation f...
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ژورنال
عنوان ژورنال: Il Nuovo Cimento D
سال: 1994
ISSN: 0392-6737
DOI: 10.1007/bf02458793