Double-Tailed Surfactants: The Effect of Hydrocarbon Chain Structure on Phase Behavior.
Final rept. 26 Apr 82-28 Feb 86,
TENNESSEE UNIV KNOXVILLE DEPT OF CHEMISTRY
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The formation by double-tailed surfactants of normal micelles in water, reverse micelles in a hydrocarbon solvent and microemulsions in surfactanthydrocarbonwater systems was proposed to possess quantitative and qualitative differences from aggregation by the analogous single-tailed surfactants. In comparing the two classes, with respect to normal micelles the following questions were of interest 1 how does micelle size change 2 how does the extent of counterion binding change 3 what transitions in micelle shape occur as surfactant concentration is increased 4 how does the propensity for micellar growth with increasing surfactant concentration depend upon surfactant structure The experimental techniques employed included conductimetry, EMF measurements both surfactant-selective and counterion-selective electrodes were used, Sodium 23 NMR, Hydrogen 1 NMB and small-angle scattering both light and neutron.
- Physical Chemistry