Neutron Reflectometry of an Anionic Surfactant at the Solid–Liquid Interface under Shear

Published on 2017-06-19T19:35:20Z (GMT) by
Neutron reflectometry with <i>in situ</i> rheology is used to measure the shear response of an adsorbed anionic surfactant (sodium bis­(2-ethylhexyl) sulfosuccinate, AOT) at the alumina–water interface. A low surfactant concentration is measured where a single bilayer adsorbs at the interface as well as a higher concentration where a multilamellar structure forms. The low concentration structure does not change with the imposed shear (oscillatory or steady). However, the lamellar phase shows a loss of structure under both steady and oscillatory shear. There are differences between the steady and oscillatory cases, which are discussed, with both showing a strong dependence on the strain amplitude.

Cite this collection

J. L. Welbourn, Rebecca; Bartholomew, Felicity; Gutfreund, Philipp; Clarke, Stuart M. (2017): Neutron Reflectometry of an Anionic Surfactant at the Solid–Liquid Interface under

Shear. ACS Publications.

https://doi.org/10.1021/acs.langmuir.7b00530

Retrieved: 08:58, Nov 24, 2017 (GMT)