Abstract:

Bromination, chlorination, and hydroxylation were carried out on the hydrophobic chain of several com. available nonionic surfactants (Brij, Mapeg, and polyglycerol oleates) in order to modify their hydrophobic characteristics without changing their hydrophilic moieties. Paraffinic oil-in-water emulsions could be stabilized using these new surfactants. The derivatization of the nonionic surfactants increased their overall hydrophilicity, and as a result higher HLB values were obtained for the surfactants. In spite of the fact that hydrophilic groups were introduced into the hydrocarbon chain, stable emulsions were prepd. and in some cases even better stabilities were obsd. [on SciFinder(R)]