http://www.cnr.it/ontology/cnr/individuo/prodotto/ID39661
Virial coefficient and demixing of athermal non additive mixtures (Articolo in rivista)
- Type
- Label
- Virial coefficient and demixing of athermal non additive mixtures (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1021/jp070277m (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Pellicane G.; Caccamo C.; Giaquinta P. V.; Saija F. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- Scopu (literal)
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Dip. Fisica, Universita' di Messina, Messina, Italy
IPCF-CNR, Messina, Italy (literal)
- Titolo
- Virial coefficient and demixing of athermal non additive mixtures (literal)
- Abstract
- We compute the fourth virial coefficient of a binary nonadditive, hard-sphere mixture over a wide range of
deviations from diameter additivity and size ratios. Hinging on this knowledge, we build up a y expansion
(Barboy, B.; Gelbart, W. N. J. Chem. Phys. 1979, 71, 3053) in order to trace the fluid-fluid coexistence
lines, which we then compare with the available Gibbs-ensemble Monte Carlo data and with the estimates
obtained through two refined integral-equation theories of the fluid state. We find that in a regime of moderately
negative nonadditivity and largely asymmetric diameters, relevant to the modeling of sterically and
electrostatically stabilized colloidal mixtures, the fluid-fluid critical point is unstable with respect to
crystallization. (literal)
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