Figure 5

Raman spectra over a fracture on PET reference sample. (a) Spots analysed covering the fracture on the PET reference sample and (b) comparison between the spectra obtained from points 1 to 5.

Raman spectra over a fracture on PET reference sample. (a) Spots analysed covering the fracture on the PET reference sample and (b) comparison between the spectra obtained from points 1 to 5.