Analysis of atmospheric plasma treated polypropylene by large area ToF-SIMS imaging and NMF

This work combines large area ToF-SIMS imaging with multivariate analysis methods in order to characterise a cold-atmospheric plasma treatment of the surface of an automotive grade polypropylene. Data pre-processing steps are also presented alongside their main challenges. The results enabled the investigation of the spatial distribution of the treatment for different standoff distances as well as the effects of plasma plume mixing with atmosphere