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Proceedings Paper

Linear dichroism measurements by polarization modulation FTIR spectroscopy: quantitative analysis and application to polymers
Author(s): Thierry Buffeteau; B. Desbat; Michel Pezolet; J. M. Turlet
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Paper Abstract

Infrared linear dichroism measurements on stretched poly(vinyl chloride) (PVC) films using polarization modulation and simultaneous two channel acquisition demonstrate the high sensitivity of this method, especially for very small deformations of the polymer. With proper calibrations, dichroic difference spectra obtained by polarization modulation can be related quantitatively to the orientation function <P2(cos(Theta) )> for draw ratios as high as three. Curves relating the orientation function of the polymer chains and the draw ratio show much less dispersion of the data points than those obtained from conventional dichroic ratio measurement.

Paper Details

Date Published: 31 January 1994
PDF: 2 pages
Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); doi: 10.1117/12.166766
Show Author Affiliations
Thierry Buffeteau, Univ. Bordeaux I (France)
B. Desbat, Univ. Bordeaux I (France)
Michel Pezolet, Univ. Laval (Canada)
J. M. Turlet, Univ. Bordeaux I (France)


Published in SPIE Proceedings Vol. 2089:
9th International Conference on Fourier Transform Spectroscopy
John E. Bertie; Hal Wieser, Editor(s)

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