Molecular nature of hydrotropic action of sodium toluenesulfonate in micellar solutions of anionic surfactants

1991 ◽  
Vol 27 (5) ◽  
pp. 527-533
Author(s):  
V. A. Gaevoi ◽  
V. S. Kuts ◽  
V. I. Kovalev
Keyword(s):  
Anionic Surfactants ◽  
Micellar Solutions ◽  
Molecular Nature

Surfactant structure and micellar rate enhancements: Comparison within a related group of one-tailed, two-tailed and two-headed anionic surfactants

1984 ◽  
Vol 37 (8) ◽  
pp. 1593 ◽  
Author(s):  
DJ Jobe ◽  
VC Reinsborough
Keyword(s):  
Kinetic Analysis ◽  
Anionic Surfactants ◽  
Stopped Flow ◽  
Micellar Solutions ◽  
Polar Head ◽  
The Third ◽  
Related Group

Rate enhancements for the reaction between Ni2+(aq) and pyridine-2-azo-p-dimethylaniline (pada) have been investigated by the stopped-flow technique in micellar solutions of a related group of anionic surfactants: the sodium alkoxycarbonylmethanesulfonates, the sodium 1,2-bis(alkoxy- carbonyl)ethanesulfonates, and the disodium 4-alkyl3-sulfonatosuccinates. The second group differs from the first in having an extra identical tail and the third from the first by having an extra polar head. The hexyl, octyl and decyl members of each group were chosen for study except for the second group where the decyl member proved insoluble. The kinetic analysis revealed that adding a second tail did not dramatically increase the binding of pada to the micelles so that rate enhancements were not much increased. Adding a second head decreased the binding of Ni2+ ion to the micelles so that the third group appears to have no advantages in rate enhancements.

Phase behavior of cationic and anionic surfactants at low concentrations

1992 ◽  
Vol 50 (1) ◽  
pp. 694-695
Author(s):  
E. Naranjo
Keyword(s):  
Phase Behavior ◽  
Structural Characterization ◽  
Dynamic Systems ◽  
Anionic Surfactants ◽  
Intermolecular Forces ◽  
Stable Form ◽  
Surfactant Mixtures ◽  
Low Concentrations ◽  
Cationic And Anionic Surfactants ◽  
General Method

Equilibrium vesicles, those which are the stable form of aggregation and form spontaneously on mixing surfactant with water, have never been demonstrated in single component bilayers and only rarely in lipid or surfactant mixtures. Designing a simple and general method for producing spontaneous and stable vesicles depends on a better understanding of the thermodynamics of aggregation, the interplay of intermolecular forces in surfactants, and an efficient way of doing structural characterization in dynamic systems.

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