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Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 62,
  • Issue 10,
  • pp. 1124-1128
  • (2008)

Dynamic Infrared Study of Polyphenylene Sulfide Using Planar Array Infrared Spectroscopy

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Abstract

Planar array infrared (PA-IR) spectroscopy was used to study polyphenylene sulfide (PPS) at room temperature during the application of a sinusoidal elastic deformation. All of the intensity in the dynamic spectra was contained within the in-phase spectrum, which was expected since the measurements were carried out at room temperature, far below the glass transition temperature. The contributions of chain orientation, sample thinning, and stress-induced band shifts were separated in the dynamic spectra. It was found that the effects of chain orientation and sample thinning canceled each other out. Stress-induced band shifts far below the spectral resolution, on the order of 0.01 cm<sup>−1</sup>, were quantified and used to calculate the stress optical coefficients and mode Gruneisen parameters for PPS.

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