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Applied Spectroscopy

Applied Spectroscopy


  • Vol. 43, Iss. 7 — Sep. 1, 1989
  • pp: 1279–1281

A New Internal Pressure Calibrant for High-Pressure Infrared Spectroscopy of Aqueous Systems

P. T. T. Wong and D. J. Moffat

Applied Spectroscopy, Vol. 43, Issue 7, pp. 1279-1281 (1989)

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Pressure-induced correlation field splitting of the CH2 rocking mode in the infrared spectra of methylene chain systems such as polyethylene, n-alkanes, surfactants, fatty acids, and model and biomembranes provides important information concerning the interchain structural and dynamic properties of these systems. The pressure at which the correlation field splitting starts is a measure of the orientational disorder of methylene chains along the chain axis. Moreover, the integrated intensity ratio between the correlation field component bands of the CH2 rocking mode is a measure of the relative orientation of the zig-zag planes between neighboring methylene chains.

P. T. T. Wong and D. J. Moffat, "A New Internal Pressure Calibrant for High-Pressure Infrared Spectroscopy of Aqueous Systems," Appl. Spectrosc. 43, 1279-1281 (1989)

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