Abstract:

A review. Double emulsions are complex dispersed liq. systems known also as "emulsion of emulsion" or "emulsions with emulsions", in which the droplets of one dispersed liq. are further dispersed in another liq. Double emulsions can be of water-in-oil-in-water or oil-in-water-in-oil. The most common and the most studied double emulsions are of water-in-oil-in-water since they have higher potential to become com. products in food, cosmetics and pharmaceutical systems. Double emulsions are considered extremely promising formulations for slow and controlled release of entrapped active matter form the inner phase to the outer continuous phase. Recent studies and the different approaches that have been recently introduced to make double emulsions are discussed. One of the most promising techniques for making double emulsions is using the concept of emulsified microemulsion or emulsified mesophases. [on SciFinder(R)]