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Conductometry and thermodynamic study of micellization of cetyltrimethylammonium bromide in mixed solvents containing dilute electrolyte solutions / H. J. Y. El-Aila in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 4/2011 (07-08/2011)

[article]
inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 4/2011 (07-08/2011) . - p. 312-317

Titre :	Conductometry and thermodynamic study of micellization of cetyltrimethylammonium bromide in mixed solvents containing dilute electrolyte solutions
Type de document :	texte imprimé
Auteurs :	H. J. Y. El-Aila, Auteur
Année de publication :	2011
Article en page(s) :	p. 312-317
Note générale :	Bibliogr.
Langues :	Anglais (eng)
Catégories :	Surfactants
Tags :	Micellisation 'Concentration micellaire critique' 'Bromure cétyltriméthyle ammonium' Diméthylsulfoxyde Acétonitrile Ion Conductimétrie
Index. décimale :	668.1 Agents tensioactifs : savons, détergents
Résumé :	The critical micelle concentration (CMC) of Cetyltrimethyl ammonium bromide (CTAB) was determined conductometrically in binary mixtures of water + cosolvent at various temperatures and at low concentrations of sodium chloride, ranging from 0.0 to 2.4 × 10–2 M. Dimethylsulfoxide (DMSO) and acetonitrile (AN) were used as cosolvents added to water. The ability of NaCl to lower the CMC of CTAB in water was inhibited by DMSO and AN. Thermodynamic parameters of micellization ΔH0m, ΔS0m, and ΔG0m were evaluated according to the pseudo-phase model. The contribution of DMSO and AN in the micellization process of CTAB in aqueous electrolyte solutions were discussed in terms of the observed thermodynamic properties.
Permalink :	https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11951

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