Fig. 5

Spectral regions useful for identification of various polymers. Ranges indicated by colored bars were identified as containing useful spectral features for the identification and differentiation of polymer spectra. This can include local minima and maxima. PVC: polyvinyl chloride, PS: polystyrene, PP: polypropylene, PLA: polylactic acid, PET: polyethylene terephthalate, PE: polyethylene, PC: polycarbonate, ABS: acrylonitrile butadiene