Reflection-absorption FT-IR spectroscopy of vinyl octadecanoate at the air/water interface

Sinnamon, B. F., Dluhy, R. A. and Barnes, G. T. (1999) Reflection-absorption FT-IR spectroscopy of vinyl octadecanoate at the air/water interface. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 156 1-3: 215-222. doi:10.1016/S0927-7757(99)00074-6


Author Sinnamon, B. F.
Dluhy, R. A.
Barnes, G. T.
Title Reflection-absorption FT-IR spectroscopy of vinyl octadecanoate at the air/water interface
Formatted title
Reflection–absorption FT–IR spectroscopy of vinyl octadecanoate at the air/water interface
Journal name Colloids and Surfaces A: Physicochemical and Engineering Aspects   Check publisher's open access policy
ISSN 0927-7757
1873-4359
Publication date 1999-10-15
Year available 1998
Sub-type Article (original research)
DOI 10.1016/S0927-7757(99)00074-6
Volume 156
Issue 1-3
Start page 215
End page 222
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier B.V.
Collection year 1999
Language eng
Subject C1
250103 Colloid and Surface Chemistry
780103 Chemical sciences
Formatted abstract
Reflection–absorption Fourier transform infrared (RA FT–IR) spectra of spread monolayers of vinyl octadecanoate have been obtained for a range of surface pressures at 292 K. Unpolarised and s- and p-polarised radiation at 30° angle of incidence have been used. Results in the C—H stretching region show that even at very low surface pressures the monolayer appears to consist of condensed domains where the acyl chains are highly ordered and densely packed. At higher surface pressures the average packing density is higher, but otherwise the spectra are unaltered, showing that the acyl chains remain highly ordered with few gauche bonds throughout the accessible range of surface pressure (0.1 to 18 mN m−1). There was no appreciable change in the spectrum when the monolayer passed through the LC to S phase transition.
© 1999 Elsevier Science B.V. All rights reserved.
Keyword Chemistry, Physical
Reflection-absorption Ft-ir Spectroscopy
Monolayers, Ft-ir Spectra
Vinyl Octadecanoate Monolayers
Vinyl Stearate Monolayers
Monolayer Structure By Ft-ir
Air-water-interface
Surface-pressure-gradients
Normal-alkyl Chains
H Stretching Modes
Phase-transitions
Phospholipid Monolayers
Infrared-spectroscopy
Langmuir Monolayers
Films
Heneicosanol
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemistry and Molecular Biosciences
 
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Created: Tue, 10 Jun 2008, 13:33:57 EST