title: Morphology of polysorbate 80 (Tween 80) micelles in aqueous dimethyl sulfoxide solutions.
abstract: The structures of micelles of the surfactant polysorbate 80 (Tween 80) in 0-50% aqueous dimethyl sulfoxide (DMSO) solutions (pH 7.2, ionic strength 2.44 mM) were investigated by means of small-angle X-ray scattering. At DMSO concentrations of 0-20%, core-shell cylinder micelles formed, and at 30-50% DMSO, core-shell discus micelles formed, that is, changing the hydrophobicity of the DMSO solvent mixture changed the micelles from core-shell cylinder micelles to core-shell discus micelles.
authors.affiliation: Faculty of Pharmaceutical Sciences, Setsunan University, 573-0101, Osaka,  Japan.
authors.forename: Hideki
authors.initials: H
authors.lastname: Aizawa