Determination of the first and second CMCs of surfactants by adsorptive voltammetry

The first and second critical micellar concentrations (CMCs) of sodium dodecylsulfate and cetyltrimethylammonium bromide were determined by adsorptive voltammetry with an electrochemical probe. The distribution of probe inside and outside the micelle at the second CMC was calculated. The electrode r...

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Published inColloids and surfaces. A, Physicochemical and engineering aspects Vol. 143; no. 1; pp. 89 - 94
Main Authors Ma, Chengsong, Li, Ganzuo, Xu, Yongming, Wang, Hanqing, Ye, Xingfu
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.12.1998
Subjects
Adsorptive voltammetry
Critical micellar concentration
Surfactants
Surfactants
Critical micellar concentration
Adsorptive voltammetry
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Summary:The first and second critical micellar concentrations (CMCs) of sodium dodecylsulfate and cetyltrimethylammonium bromide were determined by adsorptive voltammetry with an electrochemical probe. The distribution of probe inside and outside the micelle at the second CMC was calculated. The electrode reaction mechanism of the probe on the hanging mercury drop electrode is also discussed.
ISSN:0927-7757
1873-4359
DOI:10.1016/S0927-7757(98)00499-3