Carbonaceous particles at liquid interfaces: investigation on the interfacial properties and their correlation with the corresponding foams and emulsions (Abstract/Comunicazione in atti di convegno)

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Label
  • Carbonaceous particles at liquid interfaces: investigation on the interfacial properties and their correlation with the corresponding foams and emulsions (Abstract/Comunicazione in atti di convegno) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • Santini E.; Ravera F.; Ferrari M.; Alfè M.; Ciajolo A.; Liggieri L. (2010)
    Carbonaceous particles at liquid interfaces: investigation on the interfacial properties and their correlation with the corresponding foams and emulsions
    in COST Action D43, Spring Meeting 2010, Genova, Italy
    (literal)
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  • Santini E.; Ravera F.; Ferrari M.; Alfè M.; Ciajolo A.; Liggieri L. (literal)
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  • In: COST Action D43, Spring Meeting 2010 (Genova, Italy, 16-18 March 2010). Abstract, pp. 1 - 1. CNR_IENI, 2010. (literal)
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  • The environmental effects due to the pollution from carbonaceous particulate and the influence on properties of aqueous interfaces has been little investigated, in particular their interaction with other classes of common pollutants, such as surfactants. The carbon particles (carbon soot and carbon black) used in this study represent good models for pollutant particulate originated by combustion processes. In order to gain first insight on these systems, dispersions of carbonaceous particles containing a cationic surfactant (CTAB) have been characterised, from the interfacial properties point of view against air and hexane, by studying the dynamic surface/interfacial tension and the interfacial dilational rheological behaviour [1]. It has been observed how the presence of the carbon particles is able to modify the interfacial properties of the solution containing only the surfactant [2, 3]. This is closely related to the ability of the systems to form and stabilize disperse systems, such as foams and emulsions [4]. In fact, the different behaviour of the two kinds of particles, at w/a and w/h interfaces lets different emulsion and foam features. In particular, it has been found out that, in association with CTAB, carbon black can be used as an emulsion stabilizer, while it is not convenient as a foam stabilizer. [1] E. Santini, F. Ravera, M. Ferrari, M. Alfè, A. Ciajolo, L. Liggieri, Colloids and Surfaces A, 2010 doi:10.1016/j.colsurfa.2010.01.041 [2] F. Ravera, E. Santini, G. Loglio, M. Ferrari, L. Liggieri, Journal of Physical Chemistry B, 110 (2006) 19543-19551. [3] F. Ravera, M. Ferrari, L. Liggieri, G. Loglio, E. Santini, A. Zanobini, Colloids and Surfaces A, 323 (2008), 99-108. [4] D. Langevin, Advances in Colloid and Interface Science, 88 (2000) 209-222. (literal)
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  • CNR-IENI, Genova, CNR-IRC, Napoli (literal)
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  • Carbonaceous particles at liquid interfaces: investigation on the interfacial properties and their correlation with the corresponding foams and emulsions (literal)
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