The effect of a terminal double bond on the micellization of a simple ionic surfactant

Abstract Conductance measurements have been employed to determine the critical micellization concentration (CMC) of sodium 10-undecenoate from 5 to 30°C and of sodium undecanoate from 10 to 30°C. The CMC for sodium 10-undecenoate was found to be about a factor of 2 greater than that for sodium undecanoate from 10 to 30°C, although this factor exhibited a small, but consistent, increase with increasing temperature.