Ampholytic surfactant, N-alkyl-β-alanine, was synthesized and its infrared absorption spectra, surface tension, isoelectric points and critical micelle concentrations of aqueous solutions were measured at various electrolyte concentrations, pH and temperature. The measurements of isoelectric points and infrared spectra confirmed a zwitterionic sructure of N-alkyl-β-alanine. The critical micelle concentrations determined by surface tension ...
