Multicomponent mixture of charged hard-sphere chain molecules in the polymer mean-spherical approximation

Details Multicomponent mixture of charged hard-sphere chain molecules in the polymer mean-spherical approximation Multicomponent mixture of charged hard-sphere chain molecules in the polymer mean-spherical approximation

2001-01-01

arxiv.org/abs/cond-mat/0101010v1

Physics

Condensed Matter

Submitted to J. Chem. Phys. December 15, 2000

Scientific paper

10.1063/1.1376426

The analytical solution of the recently proposed ideal chain polymer mean-spherical approximation (Yu.Kalyuzhnyi, Mol.Phys., 94, 735(1998)) is presented for the multicomponent mixture of charged hard-sphere linear chain flexible molecules. The solution apply to any mixture of chain molecules with arbitrary distribution of the charge and size of the beads along the molecular backbone. Closed form analytical expressions for the internal energy, Helmholtz free energy, chemical potentials and pressure are derived. By way of illustration thermodynamical properties of several versions of the fluid of charged chain molecules of different length, including the molecules with uniform, diblock and alternating distribution of the charge are studied. Theoretical predictions are in reasonable agreement with available computer simulation predictions. We present also the liquid-gas phase diagrams for the systems with diblock and alternating distribution of the charge.

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