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 ...
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 was varied as well as the concn. of surfactant and octanol, whereas the ratio of surfactant to octanol was kept const. at 1:3. It turned out that there is no significant difference between both ions in their affinity towards carboxylate head groups. [on SciFinder(R)]
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