Fig. 3: Characterization of NPL Samples.
From: Mechanism of quiescent nanoplastic formation from semicrystalline polymers
A Second DSC heating scans of PET NPL conducted at a ramp rate of 10 °C/min; curves are shifted vertically for clarity and the data is normalized to the heat flow of PET (using TGA to determine PET content). B TGA of PET NPL at a ramp rate of 30 °C/min under nitrogen. C ATR-FTIR spectra of PET NPL compared to a semicrystalline bulk sample and TPA. Dashed lines indicate the carbonyl peak of bulk PET and TPA, respectively; curves are shifted vertically for clarity. D–F PLOM images of PET NPL taken at D room temperature prior to heating, E 300 °C (melted), and F) 100 °C (recrystallized). G, H PLOM images of sPS NPL taken at G 100 °C (prior to melting), H 235 °C (melted), and I) 100 °C (recrystallized).
