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Proceedings Paper

Dynamic infrared spectroscopy with a step-scan FT-IR for the characterization of polymers
Author(s): Uwe Eichhoff; Arno Simon
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Paper Abstract

Step Scan creates an identical JR modulation frequency over the entire JR spectrum. This is a prerequisite for quantitative photoacoustic spectroscopy and depth profiling. 2D conelation maps have been created for photoacoustic spectra as well as for dynamic difference spectra of polymers under periodic external mechanical perturbation. From the positions and signs of cross peaks in the 2D-maps the relative direction and timing of reorientational motions can be determined Depth profiling has been demonstrated on ethylene-vinyl acetate copolymer on polypropylene. The effects of mechanical stress on polymers using 2D-FT-IR ofhave been shown for isotactic polypropylene and a polyesther/polyurethane block copolymer.

Paper Details

Date Published: 20 July 2004
PDF: 7 pages
Proc. SPIE 5507, XVI International Conference on Spectroscopy of Molecules and Crystals, (20 July 2004); doi: 10.1117/12.570020
Show Author Affiliations
Uwe Eichhoff, Bruker Optik GmbH (Germany)
Arno Simon, Bruker Optik GmbH (Germany)


Published in SPIE Proceedings Vol. 5507:
XVI International Conference on Spectroscopy of Molecules and Crystals

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