Raman-spectral analysis of polymer reactions

The minimization of fluorescence from Raman spectra has been in part achieved by moving the exciting radiation from the visible to the NIR region of the spectrum. This opens up the possibility of using an FT-IR spectrometer as the spectral device and gaining the FT advantages of wavelength precision and excellent SNR. 

In the area of monitoring of the cure of high-performance epoxy resins for composite materials the relative merits of FT-Raman have been compared with those of FT-IR in the NIR region (as discussed in Section 3.6.2) (de Bakker et al, 1993a). 

For complete kinetic analysis and to give a cross-check when using spectral methods for monitoring reactive processing, it is important to monitor several bands due to groups that participate in the chemical reactions for network formation and at least one band that does 

1500 Para-substituted phenyl-ring semicircle stretch 

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