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Near-infrared spectra of a totally amorphous polyamide measured over the temperature range 25-200 o C was analyzed using generalized two-dimensional (2D) correlation spectroscopy. At least, five distinct bands at 5690, 5810, 5900, 5980 and 6010cm -1 were identified in the region of the CH overtones (5200-6200cm -1 ). Among them, two bands at 5810 (aliphatic) and 6010cm...
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