Abstract
Measurements of counterion binding in mixtures of surfactant aqueous solutions have been performed to study the structure of the anionic/cationic mixed micelle/solution interface. The mixtures studied were SDS/DDAC and STS/TDPC. The binding of chloride and sodium ions to mixed anionic/cationic micelles was measured using ion-specific electrodes. Counterion binding was found to be strongly dependent on the molar ratio of surfactants present. The mixed micelle/solution interface includes the headgroups of both surfactants and counterions of surfactant in excess. The addition of oppositely charged surfactant caused an increasing dissociation of counterions.
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Filipović-Vinceković, N., Škrtić, D. Counterion binding on mixed anionic/cationic micelles. Colloid & Polymer Sci 266, 954–957 (1988). https://doi.org/10.1007/BF01410852
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DOI: https://doi.org/10.1007/BF01410852