Abstract

The individual compounds in an emulsion system of water, a commercial surfactant, Laureth 4, and salicylic acid were brought into contact in order to estimate the difference between emulsion phase changes during evaporation and those expected from equilibrium conditions. The transfer of compounds between the phases was followed by visual observation of new phases appearing and the movement of the interfaces. The results showed the structure of the phases to exert a strong effect on the rate of the relocation of the compounds between the phases. The most conspicuous effect was found in the actions involving the solid phase, but even the isotropic liquid phases revealed significant differences in the rate of inter-phase transfer due to difference in diffusion rate between single molecules and inverse micelles.

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