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Three-phase fractionation of polydisperse fluids

L. Bellier-Castella, M. Baus, H. Xu

cond-mat.stat-mecharXiv:cond-mat/0105522

Abstract

It is shown that the van der Waals free-energy of polydisperse fluids, as introduced previously (L. Bellier-Castella, H. Xu and M. Baus, J. Chem. Phys. 113, 8337 (2000)), predicts that for certain thermodynamic states (e.g. low temperatures and large polydispersities) the ordinary two-phase coexistences become metastable relative to a fractionation of the system into three phases, reducing thereby the polydispersity of each of the coexisting phases.

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