Potentiometric determination of adsorption isotherms of dodecyldimethylamine-N-oxide onto laponite

Adsorption isotherms of dimethyldodecylamine-N-oxide (DDAO) onto laponite were determined by potentiometry, using a surfactant-specific electrode. The isotherms were obtained at pH 7; 8 and 9, and at various NaCl concentrations. The stability of laponite in these conditions was evidenced. All isothe...

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Bibliographic Details
Published inColloids and surfaces. A, Physicochemical and engineering aspects Vol. 212; no. 2; pp. 265 - 270
Main Authors Lair, V, Carbonnell, C, Peyre, V, Turmine, M, Letellier, P
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.01.2003
Subjects
Adsorption
Dimethyldodecylamine-N-oxide
Isotherm
Laponite
Surfactant-specific electrode
Isotherm
Dimethyldodecylamine-N-oxide
Surfactant-specific electrode
Laponite
Adsorption
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Summary:Adsorption isotherms of dimethyldodecylamine-N-oxide (DDAO) onto laponite were determined by potentiometry, using a surfactant-specific electrode. The isotherms were obtained at pH 7; 8 and 9, and at various NaCl concentrations. The stability of laponite in these conditions was evidenced. All isotherms are mingled in these conditions and the level of adsorption of the non-ionic surfactant is found to be much higher than that of its cationic homologue, dodecyltrimethylammonium (DTA +).
ISSN:0927-7757
1873-4359
DOI:10.1016/S0927-7757(02)00328-X