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Title: X-ray Scattering Studies of Long-Chain Alkanol Monolayers at the Water-Hexane Interface

Abstract

X-ray reflectivity and interfacial tension measurements demonstrate that long-chain alkanol monolayers at the water-hexane interface exhibit a well defined chain disorder and partial hexane mixing into the monolayer, in contrast to alkanol monolayers at the water-vapor interface that consist of close-packed rigid rod molecules. At the water-hexane interface triacontanol molecules form a condensed phase with progressive disordering of the chain from the -CH{sub 2}OH to the -CH{sub 3} group. At this interface the density in the head-group region is 10 to 15% greater than bulk water, an effect not seen for the ordered monolayer at the water-vapor interface. Monolayers of shorter length alkanols (consisting of 20, 22, and 24 carbons) and variations with temperature are also discussed.

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE
OSTI Identifier:
1008373
Resource Type:
Book
Resource Relation:
Related Information: Mesoscale Phenomena in Fluid Systems
Country of Publication:
United States
Language:
ENGLISH
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; HEXANE; WATER; INTERFACES; X-RAY DIFFRACTION; SURFACE TENSION; MOLECULAR STRUCTURE; ALCOHOLS; MORPHOLOGICAL CHANGES; WATER VAPOR; TEMPERATURE DEPENDENCE

Citation Formats

Schlossman, Mark L., and Tikhonov, Aleksey M. X-ray Scattering Studies of Long-Chain Alkanol Monolayers at the Water-Hexane Interface. United States: N. p., 2006. Web.
Schlossman, Mark L., & Tikhonov, Aleksey M. X-ray Scattering Studies of Long-Chain Alkanol Monolayers at the Water-Hexane Interface. United States.
Schlossman, Mark L., and Tikhonov, Aleksey M. Tue . "X-ray Scattering Studies of Long-Chain Alkanol Monolayers at the Water-Hexane Interface". United States. doi:.
@article{osti_1008373,
title = {X-ray Scattering Studies of Long-Chain Alkanol Monolayers at the Water-Hexane Interface},
author = {Schlossman, Mark L. and Tikhonov, Aleksey M.},
abstractNote = {X-ray reflectivity and interfacial tension measurements demonstrate that long-chain alkanol monolayers at the water-hexane interface exhibit a well defined chain disorder and partial hexane mixing into the monolayer, in contrast to alkanol monolayers at the water-vapor interface that consist of close-packed rigid rod molecules. At the water-hexane interface triacontanol molecules form a condensed phase with progressive disordering of the chain from the -CH{sub 2}OH to the -CH{sub 3} group. At this interface the density in the head-group region is 10 to 15% greater than bulk water, an effect not seen for the ordered monolayer at the water-vapor interface. Monolayers of shorter length alkanols (consisting of 20, 22, and 24 carbons) and variations with temperature are also discussed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 17 00:00:00 EST 2006},
month = {Tue Jan 17 00:00:00 EST 2006}
}

Book:
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