STUDY OF MICELLIZATION KINETICS IN DECYLPIRIDINIUM BROMIDE SOLUTIONS BY A CAPILLARY-WAVE METHOD

The results of measuring the length and decay coefficient of capillary waves for both molecular and micellar solutions of decylpiridinium br omide (DPB) are presented. On the basis of the dispersion equation for capillary waves and the theory of the dynamic surface properties for concentrations below the CMC, the parameters of the adsorption process were determined; these parameters were used further for the calculati on of the decay coefficient of micellar solutions. The use of characte ristic times of the slow phase of the micellization process tau2 as th e sole adjusting parameter allowed satisfactory agreement between the calculated and experimental data for concentrations higher than CMC to be achieved. The observed concentration dependence for tau2 has a pat tern typical of ionic surfactants, whereas tau2 values agree well with published data obtained by an alternative method.