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  • Title: Density functional theory and demixing of binary hard-rod-polymer mixtures.
    Author: Bryk P.
    Journal: Phys Rev E Stat Nonlin Soft Matter Phys; 2003 Dec; 68(6 Pt 1):062501. PubMed ID: 14754245.
    Abstract:
    A density functional theory for a mixture of hard rods and polymers modeled as chains built of hard tangent spheres is proposed by combining the functional due to Yu and Wu for the polymer mixtures [J. Chem. Phys. 117, 2368 (2002)] with Schmidt's functional [Phys. Rev. E 63, 50 201 (2001)] for rod-sphere mixtures. As a simple application of the functional, the demixing transition into polymer-rich and rod-rich phases is examined. When the chain length increases, the phase boundary broadens and the critical packing fraction decreases. The shift of the critical point of a demixing transition is most noticeable for short chains.
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