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Titolo:
Light scattering and electrical conductivity studies of the aerosol OT toluene water-in-oil microemulsions
Autore:
Velazquez, MM; Valero, M; Ortega, F;
Indirizzi:
Univ Salamanca, Fac Quim, Dept Quim Fis, Salamanca 37008, Spain Univ Salamanca Salamanca Spain 37008 pt Quim Fis, Salamanca 37008, Spain Univ Salamanca, Fac Farm, Dept Quim Fis, Salamanca 37080, Spain Univ Salamanca Salamanca Spain 37080 pt Quim Fis, Salamanca 37080, Spain Univ Complutense, Fac Ciencias Quim, Dept Quim Fis 1, E-28040 Madrid, Spain Univ Complutense Madrid Spain E-28040 Quim Fis 1, E-28040 Madrid, Spain
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 42, volume: 105, anno: 2001,
pagine: 10163 - 10168
SICI:
1520-6106(20011025)105:42<10163:LSAECS>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
MICRO-EMULSIONS; NEUTRON-SCATTERING; SOLUBLE POLYMERS; PERCOLATION; MICELLES; SPECTROSCOPY; SURFACTANT; COSURFACTANT; AGGREGATION; PARTICLES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Velazquez, MM Univ Salamanca, Fac Quim, Dept Quim Fis, Plaza Merced S-N, Salamanca 37008, Spain Univ Salamanca Plaza Merced S-N Salamanca Spain 37008 Spain
Citazione:
M.M. Velazquez et al., "Light scattering and electrical conductivity studies of the aerosol OT toluene water-in-oil microemulsions", J PHYS CH B, 105(42), 2001, pp. 10163-10168

Abstract

By using electrical conductivity and static and dynamic light scattering measurements, the behavior of water-oil (w/0) microemulsions formed by Aerosol OT dissolved in toluene has been examined. To study the effect of the droplet volume fraction on the microemulsion behavior, the water and the surfactant concentrations were systematically modified and the temperature dependence was also studied. The scattering intensity and the apparent diffusion coefficients are analyzed with a model involving the Carnahan-Starling hard-sphere model including an attractive term. It was found that attractive interactions become important in w/o microemulsions containing w(o) > 37. No percolation threshold is detected at the droplet volume fraction and temperature values used in this work.

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Documento generato il 01/04/20 alle ore 17:59:28