Cyclic voltammetric investigation of the micellar phase of sodium dodecyl sulfate in aqueous solutions

Cyclic voltammetric measurements were made on sodium dodecyl sulfate (SDS) in aqueous solutions using K4Fe (CN)(6) as the electroactive probe and H2SO4 as the supporting electrolyte. Using extrapolation, we estimated the diffusion coefficient D-m, hydrodynamic radius R-m, aggregation number n, and the molecular weight of SDS micelles in aqueous solutions at various surfactant concentrations. The partition coefficients, K-D, of the electroactive probe between micelle and water continuous phase were also estimated.