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1 March 1992 Use of principal components analysis for detailed observation of the effects of deformation and relaxation on the C=O stretching band of a block polyurethane
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Proceedings Volume 1575, 8th Intl Conf on Fourier Transform Spectroscopy; (1992) https://doi.org/10.1117/12.56454
Event: Eighth International Conference on Fourier Transform Spectroscopy, 1991, Lubeck-Travemunde, Germany
Abstract
A thin film of a block polyurethane copolymer (with a poly(tetramethylene oxide) soft segment, and a hard segment derived from butanediol and piperizine), was used for this study. FTIR spectra (in the C equals O region, 1650 to 1750 cm-1, 2 cm-1 nominal resolution) were collected during deformation and relaxation by a Nicolet 60SX FTIR spectrometer that was adapted to a stretching apparatus. Spectra at 20% extension intervals were collected as the sample was stretched to 200% extension, relaxed to 60% extension, and re-stretched to 300% extension. Principal components analysis of the spectra (after baseline correction, normalization, and subtraction of the average spectrum from all of the spectra) was performed with the UNSCRAMBLER software package (CAMO A/S, Trondheim, Norway).
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Charles E. Miller and Nicholas M. Reynolds "Use of principal components analysis for detailed observation of the effects of deformation and relaxation on the C=O stretching band of a block polyurethane", Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); https://doi.org/10.1117/12.56454
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