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Micelles, Dispersions, and Liquid Crystals in the Catanionic Mixture Bile Salt−...
Marques, Eduardo F.; Regev, Oren; Edlund, Håkan; Khan, AliThe phase behavior and phase structure for the catanionic pair sodium taurodeoxycholate−didodecyldimethylammonium bromide (DDAB) are investigated, at 25 °C. A combination of techniques is used including light and electron microscopy, small-angle X-ray scattering, and pulsed field gradient NMR self-diffusion. The bile salt micellar solution incorporates large amounts of the double-chained amphiphile, with the so...
Interactions between Catanionic Vesicles and Oppositely Charged Polyelectrolyte...
Marques, Eduardo F.; Regev, Oren; Khan, Ali; Miguel, Maria da Graça; Lindman, BjörnStructural and phase behavior effects resulting from the addition of a polyelectrolyte to a solution of oppositely charged vesicles are investigated in this work. Two cationic polyelectrolytes derived from hydroxyethylcellulose were used: JR400, a homopolymer, and Quatrisoft LM200, a polymer modified with alkyl side chains. The vesicles are composed of mixed anionic surfactant (sodium dodecyl sulfate) and cati...
Polymer-Induced Structural Effects on Catanionic Vesicles
Regev, Oren; Marques, Eduardo F.; Khan, Alihttp://dx.doi.org/10.1021/la9803474
Vesicle Formation and General Phase Behavior in the Catanionic Mixture SDS−DDAB...
Marques, Eduardo F.; Regev, Oren; Khan, Ali; Miguel, Maria da Graça; Lindman, BjörnCatanionic mixtures are aqueous mixtures of oppositely charged surfactants which display novel phase behavior and interfacial properties in comparison with those of the individual surfactants. One phase behavior property is the ability of these systems to spontaneously form stable vesicles at high dilution. The phase behavior of the mixture sodium dodecyl sulfate (SDS) − didodecyldimethylammonium bromide (DDAB)...
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