Three water-soluble probes with different hydrodynamic radii have been studied by self-diffusion experiments in the sponge (L3) phases of a zwitterionic surfactant system. In all cases, the self-diffusion coefficient varies linearly with the bilayer volume fraction. The available theories for rigid porous media cannot completely explain our results. Deviations from theoretical predictions appear for bilayer volume fractions greater than 0.2. The L3phase cannot be therefore pictured as a disordered network of rigid surfaces at least for transport behavior.
|Original language||American English|
|Number of pages||5|
|Journal||Journal of Physical Chemistry B|
|State||Published - 4 Mar 2004|