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Lamellar to Hexagonal Columnar Liquid Crystalline Phase Transition in a Catanionic Surfactant Mixture : Dodecylammonium Chloride/Sodium Bis(2-ethylhexyl) Sulfosuccinate (CROSBI ID 189425)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Jurašin, Darija ; Vinceković, Marko ; Pustak, Anđela ; Šmit, Ivan ; Bujan, Marija ; Filipović-Vinceković, Nada Lamellar to Hexagonal Columnar Liquid Crystalline Phase Transition in a Catanionic Surfactant Mixture : Dodecylammonium Chloride/Sodium Bis(2-ethylhexyl) Sulfosuccinate // Soft matter, 9 (2013), 12; 3349-3360. doi: 10.1039/C3SM27665A

Podaci o odgovornosti

Jurašin, Darija ; Vinceković, Marko ; Pustak, Anđela ; Šmit, Ivan ; Bujan, Marija ; Filipović-Vinceković, Nada

engleski

Lamellar to Hexagonal Columnar Liquid Crystalline Phase Transition in a Catanionic Surfactant Mixture : Dodecylammonium Chloride/Sodium Bis(2-ethylhexyl) Sulfosuccinate

Phase transitions from a dispersed lamellar to hexagonal liquid crystalline phase have been investigated in a catanionic surfactant mixture formed by mixing a single tailed cationic surfactant, dodecylammonium chloride, with a double tailed anionic surfactant, sodium bis(2-ethylhexyl) sulfosuccinate. Depending on the bulk composition and total surfactant concentration, mixed micelles, vesicles, lamellar and hexagonal columnar liquid crystalline phases have been identified. Differences in the geometry of the two hydrophobic chains stabilized vesicles of different shapes (spherical, tubular and pearled) relative to the liquid crystalline phase even in stoichiometric mixtures. At higher surfactant concentrations the phase transition from a dispersed lamellar to hexagonal columnar liquid crystalline phase proceeds continuously, with both phases coexisting over a range of concentrations. The transition proceeds through processes of vesicle aggregation, reorganization into multilayer sheets rolled-up into tubules, and formation of a hexagonal columnar liquid crystalline phase.

catanionic surfactant mixtures; phase transitions; liquid crystalline phase

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Podaci o izdanju

9 (12)

2013.

3349-3360

objavljeno

1744-683X

10.1039/C3SM27665A

Povezanost rada

Kemija

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