Effect of Nanoparticles on the Interfacial Properties of Liquid-Liquid and Liquid-Air Surface Layers (Articolo in rivista)

Type
Label
  • Effect of Nanoparticles on the Interfacial Properties of Liquid-Liquid and Liquid-Air Surface Layers (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp0636468 (literal)
Alternative label
  • F. Ravera; E. Santini; G. Loglio; M. Ferrari; L. Liggieri (2006)
    Effect of Nanoparticles on the Interfacial Properties of Liquid-Liquid and Liquid-Air Surface Layers
    in The journal of physical chemistry. B
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Ravera; E. Santini; G. Loglio; M. Ferrari; L. Liggieri (literal)
Pagina inizio
  • 19543 (literal)
Pagina fine
  • 19551 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 110 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • In: Journal of Physical Chemistry B, vol. 110 pp. 19543-19551. ACS, 2006. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 39 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, Institute for Energetics and Interphases, Genoa, Italy, Department of Organic Chemistry, UniVersity of Florence, Italy (literal)
Titolo
  • Effect of Nanoparticles on the Interfacial Properties of Liquid-Liquid and Liquid-Air Surface Layers (literal)
Abstract
  • An investigation is reported on the interfacial properties of nanometric colloidal silica dispersions in the presence of a cationic surfactant. These properties are the result of different phenomena such as the particle attachment at the interface, the surfactant adsorption at the liquid and at the particle interfaces. Since the latter strongly influences the hydrophobicity/lipophilicity of the particle, i. e. the particle affinity for the fluid interfacial environment, all those phenomena are closely correlated. The equilibrium and dynamic interfacial tensions of the liquid-air and liquid-oil interfaces have been measured as a function of the surfactant and particle concentration. The interfacial rheology of the same systems has been also investigated by measuring the dilational visco-elasticity as a function of the area perturbation frequency. These results are then crossed with the values of the surfactant adsorption on the silica particles, indirectly estimated through experiments based on the centrifugation of the dispersions. By this way it has been possible to point out the mechanisms determining the observed kinetic and equilibrium features. In particular, an important role (literal)
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