NEAR-INFRARED (NIR) FOURIER-TRANSFORM (FT) RAMAN-SPECTRA OF SOME NYLONS

By excitation at 1064 nm Raman Spectra were obtained of some commercia lly available polyamides (nylons). Low-frequency spectra were obtained to a Raman shift on approximately 50 cm-1. A band around 100 cm-1 is assigned to a mode involving atoms in the hydrogen bonds. Quantitative studies of the low-frequency band intensities are performed using the methylene bending vibrations around 1450 cm-1 as an internal standard . The band around 100 cm-1 might give information about hydrogen bondi ng (i.e. secondary structure) of polyamides.