title: Millisecond-range time-resolved small-angle x-ray scattering studies of micellar transformations.
abstract: The transformation of mixtures of cationic and anionic micelles to vesicles has been studied by time-resolved small-angle x-ray scattering (SAXS). Equimolar amounts of ionic surfactant solutions, the anionic TexaponN70-H and the cationic TTAOH, were mixed by a stopped-flow device. Time-resolved SAXS patterns reveal that within the mixing time (<10 ms) mixed micelles are formed. These globular micelles dissolve within about 400-1000 ms and form monodisperse unilamellar vesicles in a much slower process of 5-100 s duration.
authors.affiliation: Lehrstuhl für Physikalische Chemie I, Universität Bayreuth, D-95440 Bayreuth, Germany.
authors.forename: St
authors.initials: S
authors.lastname: Schmölzer
authors.forename: D
authors.initials: D
authors.lastname: Gräbner
authors.forename: M
authors.initials: M
authors.lastname: Gradzielski
authors.forename: T
authors.initials: T
authors.lastname: Narayanan
mesh_terms: D008823:Micelles; D012542:Scattering, Radiation; D013501:Surface-Active Agents / Q000737:chemistry*; D014965:X-Rays
chemical_list: D008823:Micelles; D013501:Surface-Active Agents