Confocal Raman Imaging Microscopy is Useful for Impurity Analysis in Polymers
Confocal Raman Imagingmicroscopy provides a non-destructive method for the analysis of an impurity embedded inside a polymer resin. By contrast, infrared spectroscopy requires removal or exposure of the impurity for accurate analysis. The figure demonstrates the measurement of the impurity using the NRS-3200 dispersive confocal Raman imaging microscope. The spectrum of the impurity can be easily differentiated from the spectrum of the resin. Using two separate Raman bands in the obtained spectra, the distribution of the impurity was imaged using mapping measurement. The results illustrates that the impurity could be detected even in an area where it could not be identified by visual inspection alone.
Contaminant Analysis inthe Polymer Resin
Distribution of the impurity (Peak1/Peak2)
Raman imaging microscopy