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08-08E

08-08E


By icmp_admin - Posted on 08 February 2012

UDC: 
532; 532.74; 532.772; 544.023.522
PACS: 
05.70.Ce, 61.20.Gy, 64.75.Va, 83.80.Rs

Phase coexistence in the hard-sphere Yukawa chain fluid with chain length polydispersity: Dimer thermodynamic perturbation theory

S.P. Hlushak
Yu.V. Kalyuzhnyi

An extension of the dimer version of Wertheim's thermodynamic perturbation theory is proposed and used to treat polydisperse mixture of the hard-sphere Yukawa chain fluid with chain length polydispersity. The structure and thermodynamic properties of the reference system of Yukawa hard-sphere dimers, are described using polymer mean spherical approximation. Analytical expressions for the Helmholtz free energy, chemical potential and pressure in terms of the two chain length distribution function moments are derived. Full liquid-gas phase diagram, including critical binodal, cloud and shadow curves and distribution functions of the coexisting phases were calculated.

Year: 
2008
Pages: 
22
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