Abstract
We have investigated the effect of various salts on the solu-bilisation of nonionic emulsifiers. Cloud points increase or decrease can be expressed in terms of salting-in and salting-out effects respectively. These salts effects are shown to affect the stability of inverse microlatexes of Polyacrylamide prepared by polymerization in nonionic microemulsions. Addition of electrolytes with high saltingout efficiency such as sodium acetate induces the phase transition Winsor I → W III. This allows the polymerization of monomers in bi-continuous microemulsions which are characterized by low interfacial tensions (∿ 10−3 dyn/cm).
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