Fourier Transform Near-Infrared Spectroscopy FT-NIR

A near-infrared spectrometer (Equinox 55 from Bruker) was used with OPUS software. The near-infrared spectra were recorded in the 4000-8000 cm range. For transmission analysis, polymer coatings (from 50 pm to 2 mm thick) were analyzed after debonding of the coating from the substrate by bending the coated substrate, and background spectra in air were recorded. For each analysis, 128 scans were collected at 4 cm resolution. 

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There are also more recent developments of other dual physio-chemical experimental methods. For example Durand et al (2006) presented a laboratory-made system that allows the coupling of dielectric analysis and Fourier-transform near-infrared spectroscopy (FT-NIR) to follow the cure of polyepoxy reactive systems. Complementary data are provided by the simultaneous dielectric analysis (the vitrification phenomenon) and near-infrared spectroscopic analysis (the extent of the reaction). 

Fats and Oils with emphasis on Trans Fatty Acids Using Fourier Transform Near Infrared Spectroscopy (FT-NIR), 40 855—867 (2005). 

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