Reflection–absorption FT-IR spectroscopy of pentadecanoic acid at the air/water interface
Sinnamon, Brendan, Dluhy, R.A., & Barnes, G.T. (1999) Reflection–absorption FT-IR spectroscopy of pentadecanoic acid at the air/water interface. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 146(1), pp. 49-61.
Reflection–absorption Fourier transform infrared (RA FT-IR) spectra of spread monolayers of pentadecanoic acid have been obtained for a range of surface pressures at 292 and 297 K. Unpolarised and s- and p-polarised radiation at 30° angle of incidence have been used. Results in the C–H stretching region reveal disorder in the arrangement of the acyl chains with numerous gauche bonds when the monolayer is in the liquid expanded (LE) phase and highly ordered chains with mostly trans bonds in the condensed phases (LC and S). The transition from one form to the other occurs at nearly constant surface pressure in the LE↔LC coexistence region.
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|Item Type:||Journal Article|
|Keywords:||Reflection–absorption FTIR spectroscopy, Monolayers, FTIR spectra, Pentadecanoic acid monolayers, Monolayer structure by FTIR|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)|
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > ANALYTICAL CHEMISTRY (030100)
|Divisions:||Current > QUT Faculties and Divisions > Division of Technology, Information and Learning Support|
|Deposited On:||11 Dec 2008 17:24|
|Last Modified:||10 Sep 2009 14:06|
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