title: Phase behavior, topology, and growth of neutral catanionic reverse micelles.
abstract: The ternary catanionic system octylammoniumoctanoate/octane/water is studied by combined SANS, light scattering, conductivity, and phase diagram approach in the water-poor microemulsion region. The sphere-to-cylinder growth and branching depends on the concentration, the water-to-surfactant ratio, and the temperature. The unidimensional growth leads to a network of interconnected wormlike micelles. Like most studied linear nonionic surfactants, in this true catanionic system at equimolarity of anionic and cationic surfactant, the curvature toward water increases with temperature, making connections between cylinders less frequent.
authors.affiliation: LIONS - CEA Saclay 9119, Gif-Sur-Yvette, France. benjamin.abecassis@cea.fr
authors.forename: Benjamin
authors.initials: B
authors.lastname: Abécassis
authors.forename: Fabienne
authors.initials: F
authors.lastname: Testard
authors.forename: Lise
authors.initials: L
authors.lastname: Arleth
authors.forename: Steen
authors.initials: S
authors.lastname: Hansen
authors.forename: Isabelle
authors.initials: I
authors.lastname: Grillo
authors.forename: Thomas
authors.initials: T
authors.lastname: Zemb
mesh_terms: D000838:Anions / Q000737:chemistry; D002412:Cations / Q000737:chemistry; D004655:Emulsions / Q000737:chemistry*; D008823:Micelles; D008832:Microchemistry; D009795:Octanes / Q000737:chemistry; D044367:Phase Transition; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D013501:Surface-Active Agents / Q000737:chemistry; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D000838:Anions; D002412:Cations; D004655:Emulsions; D008823:Micelles; D009795:Octanes; D000644:Quaternary Ammonium Compounds; D013501:Surface-Active Agents; D014867:Water