Abstract
Infrared emission spectroscopy was applied to characterize various textile fibers not suitable for the usual transmittance measurements. For the emission measurements, the fiber samples were mounted by wrapping them around a resistively heated wire. For spectra evaluation, the instrument response function was determined via reflection and infrared emission measurements at different temperatures of a sample. With knowledge of the instrument response function, single-beam emission spectra can be corrected and become independent of the type of spectrometer or detector. The corrected emission spectra are characteristic for the material and can be collected in a database similar to that for transmission spectra. The usefulness of the method is clearly demonstrated by the spectra of fiber samples.
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