Highly concentrated water-in-oil gel-emulsions consisting of mixtures
of hydrogenated and fluorinated gel-emulsions were prepared by two dif
ferent procedures. Diffusion of a model molecule from the gel-emulsion
mixtures was studied and compared with those of hydrogenated and fluo
rinated systems. The stability of the mixed gel-emulsions was assessed
and related to the diffusion coefficients. Diffusion experiments were
carried out by two different methods, and diffusion coefficients were
determined by numerical solution. In one experimental method the diff
usion to a receptor solution was measured while in the other method th
e diffusion of the model molecule within the emulsion was determined.
The results show that it is possible to control the stability and to o
btain intermediate diffusion rates using appropriate gel-emulsion mixt
ures.