| Attributs | Valeurs |
|---|
| type
| |
| Is Part Of
| |
| Subject
| |
| Title
| - Shear-induced micellar growth in dilute surfactant solutions
|
| Date
| |
| has manifestation of work
| |
| related by
| |
| Author
| |
| Abstract
| - The shear-thickening transition observed in aqueous solutions of cetyltrimethylammonium tosylate (CTAT) is investigated using rheology and small-angle neutron scattering under shear. Above a critical shear rate $\dot{\gamma}_\ab{C}$, the increase of the apparent shear viscosity is due to the formation of a shear-induced phase. Using a Porod representation to analyze the aggregate local morphology, we demonstrate that the shear-induced viscous state consists of cylindrical micelles strongly aligned in the flow. We also investigate the shear rate and surfactant concentration dependencies of the structure factor peak revealed at low wave vectors. Above $\dot{\gamma}_\ab{C}$, the systematic shift of the structure factor peak to lower wave vectors is interpreted in terms of the shear-induced micellar growth of the aggregates.
|
| article type
| |
| publisher identifier
| |
| Date Copyrighted
| |
| Rights
| |
| Rights Holder
| |
| is part of this journal
| |
| is primary topic
of | |
