Millisecond-range time-resolved small-angle x-ray scattering studies of micellar transformations.
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.
Schmölzer
St
S
Lehrstuhl für Physikalische Chemie I, Universität Bayreuth, D-95440 Bayreuth, Germany.
Gräbner
D
D
Gradzielski
M
M
Narayanan
T
T
D008823:Micelles; D012542:Scattering, Radiation; D013501:Surface-Active Agents / Q000737:chemistry*; D014965:X-Rays
D008823:Micelles; D013501:Surface-Active Agents