Abstract
The cohesive energy ratio concept (CER) developed by Beerbower and Hill for the stabilization of emulsions has been extended to microemulsions. The CER concept allowed us to predict the most suitable emulsifiers and oils for the production of polymerizable microemulsions. For example, a blend of non-ionic surfactants (sorbitan sesqui-oleate and poly(oxyethylene) sorbitol hexaoleate) was found to be very efficient for the microemulsification of an aqueous solution of acrylamide in an isoparaffinic oil (Isopar M). Under these conditions, microemulsion polymerization leads to stable uniform polyacrylamide microlatexes ( d < 0.1 μm) which can be useful for industrial applications.
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