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On the application of Flory-Huggins and integral equation theories to asymmetric hard sphere mixtures
Royal Institute of Technology, Physical Chemistry, Stockholm, Sweden.
Dipartimento di Fisica, Sez. Teorica, Messina, Italy; Ist. Nazionale Fisica della Materia, Messina, Italy.
Dipartimento di Fisica, Sez. Teorica, Messina, Italy; Ist. Nazionale Fisica della Materia, Messina, Italy.
1999 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 111, no 15, 6884-6889 p.Article in journal (Refereed) Published
Abstract [en]

Flory-Huggins (FH) and integral equation theories (IETs) are used to describe the equation of state and the relevant mixing properties of hard sphere binary mixtures in the limit of high size-asymmetry. The results are compared with those obtained from the heuristic equation of state of Mansoori et al. (BMCSL) [J. Chem. Phys. 54, 1523 (1971)] and with the Flory-Huggins scheme of other authors. By choosing a physical recipe for the volume fractions of the two species in the mixture FH theory is shown to be a good approximation to the entropy and the Gibbs free energy of mixing, which shows improvement at high size-asymmetry. In addition, the results of the IETs are found to be in overall quantitative agreement with BMCSL. The implications of our study concerning colloidal systems are discussed.

Place, publisher, year, edition, pages
1999. Vol. 111, no 15, 6884-6889 p.
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:hig:diva-25386Scopus ID: 2-s2.0-0042723879OAI: oai:DiVA.org:hig-25386DiVA: diva2:1147998
Available from: 2017-10-09 Created: 2017-10-09 Last updated: 2017-10-09Bibliographically approved

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