15420-83-4Relevant articles and documents
The properties of a family of two-headed surfactant systems: The 4- alkyl-3-sulfosuccinates 2. Surface properties of alkyl sulfosuccinate micelles
MacInnis, Judith A.,Boucher, Greg D.,Palepu,Marangoni, D.Gerard
, p. 340 - 347 (1999)
The micellar properties of a family of two-headed surfactants, the alkyl sulfosuccinates, were investigated employing fluorescence, ultra-violet spectroscopy, and acid-base titrations, as a function of the chain length of the surfactant. Polarity of the micellar interior was investigated using pyrene and the ionic probe 8-anilino-1-naphthalensulfonic acid ammonium salt (ANS). Pyrene I1/I3 ratios were used to probe the microenvironment of the probe in the palisade layer of the micelle. The pK(a) values of both of the anionic head groups were determined using acid-base titrations. Surface potential measurements were obtained from the measurement of the pK(a) of the hydrophobic indicator, 7-hydroxycoumarin, at the sulfosuccinate micellar interface. All of these results were used to examine the surface properties of the alkyl sulfosuccinate micelles and the polarity of the micellar interior.
A nuclear magnetic resonance investigation of the micellar properties of two-headed surfactant systems: The disodium 4-alkyl-3-sulfonatosuccinates. 1. Equilibrium micellar properties
Boucher, Gregory D.,MacDonald, Aaron C.,Hawrylak, Brent E.,Marangoni, D. Gerrard
, p. 1266 - 1273 (2007/10/03)
A family of two-headed surfactants, the disodium 4-alkyl-3- sulfonatosuccinates, has been synthesized by the monoesterification of maleic anhydride and the addition of sodium bisulfite to the corresponding monoester. The properties the micelles formed by these compounds in aqueous solution, and the conformations of the chains comprising the micellar interior, have been investigated using a combination of 1-D nmr experiments and homonuclear and heteronuclear 2-D nmr techniques. The critical micelle concentrations (cmc's) and the aggregation numbers determined from the nmr experiments indicate that, in agreement with the earlier literature on other two-headed surfactant systems, these amphiphiles have high cmc's and low aggregation numbers when compared to single-headed surfactants of comparable chain length. All these results are interpreted in terms of the effect of adding a second headgroup to a single-headed, single-tailed surfactant.
