Electromotive force measurements of galvanic liquid junction free cells containing two glass electrodes, one reversible to sodium ions and the other reversible to hydrogen ions, were performed at 25-degrees-C on buffered solutions of sodium dodecyl sulfate (SDS) within the concentration range 0-0.1 M. The critical micellar concentration and the degree of association of sodium ions to the micelles were determined. It emerges that a SDS bilayer structure can explain the experimental data. Measurements were also carried out by using 0.50, 0.30 and 0.15 M N(CH3)4Cl as ionic medium. The results could be explained by assuming the presence of species of the type Na(q)(DS)n, where DS represents the dodecyl sulfate moiety and q and n are integer numbers. The q and n values increase by increasing the ionic medium concentration.

Aqueous micellar solution of sodium dodecylsulfate in tetramethylammonium chloride. / Bottari, Emilio Giovanni; Festa, Maria Rosa; Jasionowska, Renata. - In: ANNALI DI CHIMICA. - ISSN 0003-4592. - STAMPA. - 80(1990), pp. 413-422.

Aqueous micellar solution of sodium dodecylsulfate in tetramethylammonium chloride.

BOTTARI, Emilio Giovanni;FESTA, Maria Rosa;JASIONOWSKA, Renata
1990

Abstract

Electromotive force measurements of galvanic liquid junction free cells containing two glass electrodes, one reversible to sodium ions and the other reversible to hydrogen ions, were performed at 25-degrees-C on buffered solutions of sodium dodecyl sulfate (SDS) within the concentration range 0-0.1 M. The critical micellar concentration and the degree of association of sodium ions to the micelles were determined. It emerges that a SDS bilayer structure can explain the experimental data. Measurements were also carried out by using 0.50, 0.30 and 0.15 M N(CH3)4Cl as ionic medium. The results could be explained by assuming the presence of species of the type Na(q)(DS)n, where DS represents the dodecyl sulfate moiety and q and n are integer numbers. The q and n values increase by increasing the ionic medium concentration.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11573/462119
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