SELF-DIFFUSION IN MICROEMULSIONS AND MICELLAR SIZE

Self-diffusion of all components of two different microemulsions have been measured. Application of Stokes-Einstein equations for surfactant and oil gives a simple relation connecting their size and self-diffus ion coefficients. Using the measured self-diffusion coefficients and d imensions of oil molecules known from elsewhere, the size of the surfa ctant droplets was estimated. This approach turns out to be advantageo us in practical determination of droplet size in microemulsions.