Fig. 5: FTIR analysis of mask degradation. | npj Materials Degradation

Fig. 5: FTIR analysis of mask degradation.

From: Plasma degradation of contaminated PPE: an energy-efficient method to treat contaminated plastic waste

Fig. 5

a Typical ATR-IR spectra recorded for each layer of the three-ply face mask in comparison to that of standard bulk PP sample prior to plasma irradiation. This clearly identifies the mask material as PP. b ATR-IR spectra of a face mask sample as a function of irradiation time with 200 W of plasma. Note the appearance of the broad features centred around 1714 cm−1 as the face mask material is etched with the plasma. c Integrated absorbance of the features at 1714 cm−1 from the ATR-IR spectra of a face mask sample as a function of plasma irradiation time. The error bars represent the standard derivation of the data points.

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