5. Unusual emulsions
So far, we've only mentioned simple emulsions, comprising a fatty phase and a polar phase, with a white appearance and a dispersed phase volume fraction not exceeding 40%. There are, however, more complex systems whose specific properties can be actively sought by formulators.
5.1 Transparent emulsions
Transparent emulsions are easy to produce, taking on the appearance of a viscous solution or transparent gel. The white appearance of emulsions is the result of the scattering of incident light. This scattering is jointly influenced by the number and size of droplets, and the ratio of the refractive indices of the dispersed and continuous phases. If droplet size is to be reduced in order to reduce the intensity of visible light scattering (i.e., to make the...
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Unusual emulsions
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