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DETERMINATION OF THE STRUCTURE OF A SURFACTANT LAYER ADSORBED AT THE SILICA WATER INTERFACE BY NEUTRON REFLECTION

Abstract:
Neutron reflection from the solid/liquid interface has been used to determine the structure of an adsorbed layer of hexaoxyethylene glycol monododecyl ether (C12E6) on quartz. Contrast variation experiments show that C12E6 adsorbs as a bilayer, the ethylene oxide chains forming the layers adjacent to the quartz and the bulk solution. The thickness of the hydrocarbon core of the layer was found to be 17±3 Å and the area per molecule 23 ± 3 Å2. The ethylene oxide chain regions were 16±3 Å thick. The average hydration number of a single ethylene oxide group was found to be 2.0±0.5. © 1989.
Publication status:
Published

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Publisher copy:
10.1016/0009-2614(89)85124-3

Authors

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Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Role:
Author


Journal:
CHEMICAL PHYSICS LETTERS More from this journal
Volume:
162
Issue:
3
Pages:
196-202
Publication date:
1989-10-13
DOI:
ISSN:
0009-2614


Language:
English
Pubs id:
pubs:43159
UUID:
uuid:101cc4ab-b374-497d-a6cf-1542b1af78fc
Local pid:
pubs:43159
Source identifiers:
43159
Deposit date:
2012-12-19
ARK identifier:

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