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Dielectric relaxation of cationic surfactants in aqueous solution. 2. Solute relaxation

Baar, C. ; Buchner, Richard ; Kunz, Werner


The complex dielec. permittivity spectra of aq. octyl- (OTAB), dodecyl-, and hexadecyltrimethylammonium bromide and of dodecyltrimethylammonium chloride reveal two low-frequency relaxation processes centered around 80 and 250 MHz. These are assigned to the diffusional relaxation of free and bound counterions, resp., around the charged micelles. It is found that at low concns. the model of ...


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