Emulsification properties, mixed solution

The importance of the properties of the interfacial region for spontaneous emulsification was first demonstrated by Gad (4), who observed that when a solution of lauric acid in oil was carefully placed on an aqueous alkaline solution, an emulsion spontaneously formed at the interface. The reason for this spontaneous emulsification is the formation of a mixed film of lauric acid and sodium laurate (produced by partial neutralization of the acid by alkali) which produces an ultra-low interfacial tension. 

Microgels can be produced by the mixing and emulsification of two different polymer solutions that can react to form cross-linked microgel particles that are monodisperse and have predictable swelling properties [8]. An example of this is the use of aldehyde and hydrazide-functionaUzed carbohydrates where heating or UV irradiation can be used for gelation. 

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