Effect of hydrophobic chain on CMC in ethoxylated surfactants.

Citation:

N Garti and Aserin, A. 1986. “Effect Of Hydrophobic Chain On Cmc In Ethoxylated Surfactants.”. Journal Of Dispersion Science And Technology, 7, 1, Pp. 81–93. doi:10.1080/01932698608943450.

Abstract:

Ethoxylated oleyl alc. or esters and selected derivs. behave abnormally in aq. solns. When plotting ln (CMC) vs. the no. of ethylene oxide (EO) units of the unsatd. compds., neg. slopes are obtained, while pos. slopes are expected for the corresponding satd. surfactants. Prepn. of dihydroxy-, dichloro-, and dibromostearyl ethers or esters of ethoxylated surfactants and selected polyglycerol esters confirmed these anomalies. No common intercept is expected for such compds. at 0 EO units. An explanation based on steric hindrance of the surfactant on micelle packing is proposed. [on SciFinder(R)]

Last updated on 05/27/2020