Diffusion and sizes of micelles in polymer solutions and gels
The sizes and self-diffusion coefficients of the non-ionic micellar systems octaethylene- and hexaethylene glycol mono n-dodecylether, C12E8 and C12E6, respectively, were studied in gels and solutions of the polyelectrolyte gk-carrageenan in water as functions of polymer and surfactant concentration at 25°C. A recently presented tracer technique  was used to determine the self-diffusion coefficient of the surfactant monomer, free or in the aggregated state. The time-resolved fluorescence quenching technique was used to determine aggregation numbers of the micellar aggregates giving the number average aggregation numbers and the standard deviations . The polydispersity was analyzed assuming a Schultz distribution  of the aggregation numbers.
Key wordsDiffusion micelle polymer gel
- 3.Magid LJ (1987) In: Schick MJ (ed) Nonionic Surfactants, Physical Chemistry, Marcel Dekker, NY; Surfactant Science Series vol 23:677Google Scholar