Aggregation of Sulfosuccinate Surfactants in Water

Article abstract of DOI:10.1021/j150644a033

We have investigated the aggregation of sodium di-n-alkyl sulfosuccinates in water (H2O and D2O at 45 deg C).A self-consistent picture of the dependence of sodium ion binding on Surfactant concentration is obtained from emf measurements, conductometry, and small-angle neutron scattering (SANS) measurements.The concentration dependence of the micellar aggregation number for the sulfosuccinates and related duoble-tailed surfactants depends markedly on surfactant solubility.A sphere-to-disk transition in micellar shape, which might have been expected as a precursor to formation of a lamellar mesophase, was not observed as the surfactant concentration was increased.