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Abstract: The first three perturbation terms in the inverse temperature expansion of the Helmholtz free energy of hard-core attractive Yukawa (HCAY) monomer fluids have been determined from computer simulation for several values of the range parameter. The predictions of the resulting perturbation theory for the equation of state and the excess energy are shown to be in excellent agreement with simulation data that are also reported. The theory accurately predicts also the simulation data for the liquid?vapour coexistence densities reported in the literature. Extension of the theory to HCAY binary mixtures is achieved by mapping the mixture to an effective single-component fluid and successfully compared with the simulation data reported in this work. The combination of the theory for the single-component fluid of monomers with a version of the Wertheim thermodynamic perturbation theory (TPT) also provides satisfactory results for HCAY chain fluids.
Authorship: Akhouri B.P., Solana J.R.,
Fuente: Journal of Molecular Liquids, 2021, 338, 116493
Publisher: Elsevier Science
Publication date: 01/09/2021
No. of pages: 11
Publication type: Article
DOI: 10.1016/j.molliq.2021.116493
ISSN: 1873-3166,0167-7322
Publication Url: https://doi.org/10.1016/j.molliq.2021.116493
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AKHOURI, B.P.
JOSE RAMON SOLANA QUIROS
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