Preparation and Surface Activities of Novel Sodium Sulfated Aryl Oleic Acid Alkanolamides

Abstract

Abstract Novel sodium sulfated aryl oleic acid alkanolamide surfactants (SSAOAA) with different hydrophobic groups are prepared. An aromatic ring introduced to a long alkyl chain has a significant effect on the effectiveness in reducing water surface tension. The critical micelle concentration (c.m.c.) of one product and the surface tension (γc.m.c.) at the c.m.c. are investigated. Surface active properties of sodium sulfated aryl oleic acid alkanolamides are compared to those of conventional sulfated fatty acid alkanolamides. Results show that the c.m.c. decreases with increasing the sizes of alkyl chains.