Surface-active properties of novel cationic surfactants with two alkyl chains and two ammonio groups
- Cite this article as:
- Kim, TS., Kida, T., Nakatsuji, Y. et al. J Am Oil Chem Soc (1996) 73: 907. doi:10.1007/BF02517994
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A series ofbis-quaternary ammonium salts was easily prepared by the reaction of a long-chaintert-alkylamine with epichlorohydrin, and their surface-active properties were measured. The prepared amphipathic compounds had good water solubility and showed characteristic surface-active properties, particularly, extremely excellent foaming ability and foam stability for some specific compounds, such as the compound with a dodecyl and a tetradecyl group as the lipophilic chains. Their critical micelle concentration, which decreased with increased alkyl chainlength, is two orders of magnitude lower compared with the conventionalmono-quaternary ammonium salts. In comparison with surface-active properties ofbis-quaternary ammonium salts, prepared from various organic dichlorides, there are little differences based on the kind of connecting group in the surface-active properties except for foaming.