Neutron Reflection Study of the Adsorption of the Phosphate Surfactant NaDEHP onto Alumina from Water

被引：8

作者：

Welbourn, Rebecca J. L. ^{[1
,2
]}

Lee, Seung Yeon ^{[1
,2
]}

Gutfreund, Philipp ^{[3
]}

Hughes, Arwel ^{[4
]}

Zarbakhsh, Ali ^{[5
]}

Clarke, Stuart M. ^{[1
,2
]}

机构：

[1] Univ Cambridge, BP Inst, Cambridge, England

[2] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[4] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England

[5] Queen Mary Univ London, Sch Biol & Chem Sci, London, England

来源：

LANGMUIR | 2015年 / 31卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

DI(2-ETHYLHEXYL) PHOSPHORIC-ACID; AEROSOL-OT; SODIUM BIS(2-ETHYLHEXYL)PHOSPHATE; SAPPHIRE/SOLUTION INTERFACE; SPECULAR REFLECTION; AQUEOUS-SOLUTION; LAMELLAR PHASE; SAPPHIRE; AOT; PH;

D O I：

10.1021/la504837s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：3377 / 3384

页数：8

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