Silica Nanoparticles at Liquid-Liquid and Liquid-Air Interface (Abstract/Poster in atti di convegno)

Type
Label
  • Silica Nanoparticles at Liquid-Liquid and Liquid-Air Interface (Abstract/Poster in atti di convegno) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Ferrari M.; Santini E.; Loglio G.; Ravera F.; Grigoriev D.; Liggieri L. (2006)
    Silica Nanoparticles at Liquid-Liquid and Liquid-Air Interface
    in ECIS 06 : 20th Conference of the European Colloid and Interface Society, Budapest (Ungheria)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ferrari M.; Santini E.; Loglio G.; Ravera F.; Grigoriev D.; Liggieri L. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • In: ECIS 06 : 20th Conference of the European Colloid and Interface Society (Budapest (Ungheria), 17-22 September 2006). Proceedings, pp. 177-177. ECIS, 2006. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Particles at fluid interfaces are of increasing interest especially for the application in the field of emulsions and foams. Particle stabilised foams and emulsions are also common in natural products and processes. Often in association with surfactants, colloidal nanoparticles are present as stabilisers of such dispersed systems in different industrial fields. This effect is related to the behaviour of the interfacial layer and in particular to the dilational properties of composite interfaces. Here an experimental study is presented, based on the measnrement ofsurface properties of liquid-liquid and liquid-air systems, in presence of colloidal nanoparticles. Two tensiometers based on the drop profile acquisition and on the pressure acquisition are coupled allowing measurements of the dynamic and equilibrium interfacial tension and of the visco-elastic modulus to be performed in a range of frequency from 0.001 to 100 Hz. Aqueous solutions of CTAB at water/air and water/hexane interface in presence and in absence of colloidal suspension of spherical monodisperse silica nanometric particles have been under investigation in relationship to different surfactant and solid concentrations. Proper thermoodynamic and kinetic models have been applied to the interpretation of the effect of nanoparticles at these interfaces. (literal)
Titolo
  • Silica Nanoparticles at Liquid-Liquid and Liquid-Air Interface (literal)
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