Surface Properties and Aggregation Behavior of Heterogemini Surfactants

Abstract

Heterogemini surfactants with nonidentical headgroups such as ammonium and carboxylate (cationic - anionic), ammonium and gluconamide (cationic - nonionic), and ammonium and sulfobetaine (cationic - zwitterionic) were designed and synthesized, and their surface properties and aggregation behavior in aqueous solution were investigated. It was shown that they have high surface activities and unique aggregation behavior in comparison with the corresponding monomeric surfactants, gemini surfactants with the identical headgroups, and mixed monomeric surfactants.