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Specific ion adsorption on alkyl carboxylate surfactant layers

Dengler, Susanne ; Tiddy, Gordon J. T. ; Zahnweh, Lydia ; Kunz, Werner



Abstract

Mixts. of dodecyl carboxylate, CsOH, RbOH and octanol in D2O were investigated to det. the relative ion specificity of Cs+ and Rb+ in their interactions with dodecyl carboxylate in a liq. cryst. phase. Octanol as cosurfactant was necessary to obtain the lamellar liq. cryst. phase. The technique used was the measurement of the NMR quadrupole splitting of 137Cs and 87Rb. The ratio of Rb to Cs ...

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