Neutron reflection study of the adsorption of the phosphate surfactant NaDEHP onto alumina from water

Langmuir : the ACS Journal of Surfaces and Colloids
Rebecca J L WelbournStuart M Clarke

Abstract

The adsorption of a phosphorus analogue of the surfactant AOT, sodium bis(2-ethylhexyl) phosphate (NaDEHP), at the water/alumina interface is described. The material is found to adsorb as an essentially water-free bilayer from neutron reflection measurements. This is similar to the behavior of AOT under comparable conditions, although AOT forms a thicker, more hydrated layer. The NaDEHP shows rather little variation with added salt, but a small thickening of the layer on increasing the pH, in contrast to the behavior of AOT.

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Citations

May 23, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Rebecca J L WelbournStuart M Clarke
Jun 12, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Jeffrey PoonStuart M Clarke

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