Addition Polymerization of Ethylene Oxide with p-Dodecylbenzenesulfonamide and Surface Activities of the Products

Abstract

Etho-p-dodecylbecylbenzenesulfonamide as the nonionic surfactant was prepared by addi-tion polymerization of ethylene oxide with p-dodecylbenzenesulfonamide. The reaction products were separated into several components using column chromatography. The chemical structures of the components were determined by thin layer chromatography and IR and NMR spectra analysis. The average chain length of polyoxyethylene in the polymers were estimated by the NMR method. The specific gravity and the sirface tension in aqueous solution of these samples were determined. The emulsification, solubilizatian, dispersion, the wetting were also tested by usual methods. From these experimental results, the critical micelle concentrations of the samples were obtained and it was made clear that etho-p-dodecylbenzenesulfonamide was excellent as emulsifying, solubilizing and wetting agent.