Abstract

Abstract The electrophoretic mobilities of dode-cylamine hydrochloride, hydrobromide and hydroiodide, as well as tetradecyl-amine and hexadecylamine hydrochlorides have been measured. They decrease with increasing concentration as is expected from the electrostatic point-of-view of the micelle structure. The fractions of counter ions bound to micelles are computed from the electrophoretic mobilities obtained.These values are found consistent with the result obtained by the transference number measurement. The ζ-potentials of micelle ions are calculated from the electrophoretic mobilities by Henry’s formula. They must be, however, less than the real values, if we take into account the expected highfrequency effects.

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