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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−1, were quantified and used to calculate the stress optical coefficients and mode Gruneisen parameters for PPS.

Keywords: DYNAMIC INFRARED SPECTROSCOPY; PA-IR SPECTROSCOPY; PLANAR ARRAY INFRARED SPECTROSCOPY; POLYPHENYLENE SULFIDE

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370208786049060

Affiliations: 1: Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19701 2: Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19701; Department of Chemical Engineering, University of Delaware, Newark, Delaware 19701 3: DuPont Experimental Station, DuPont Inc., Wilmington, Delaware 19880

Publication date: October 1, 2008

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