Visualization of Fibre Products Using ToF-SIMS and Multivariate Data Analysis

Typ
Examensarbete för masterexamen
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Publicerad
2021
Författare
Leksuntrakorn, Jutima
Modellbyggare
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Sammanfattning
Physical and chemical complexity of paper and fibre products, makes their spatial analysis challenging. In this study, the visualization of calendered papers was performed using spectroscopic technique, time-of-flight secondary ion mass spectrometry (ToF-SIMS), along with multivariate data analysis (MVDA) to resolve the chemical hierarchy. The chemical difference between the papers calendered at 100 C and 200 C was investigated by using principal component analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA). Among the observed differences between each side of the papers, the largest variation occurred in lower-mass region (< m/z 100). Potential chemical changes that take place in the higher-mass range (> m/z 300) could not be observed clearly using ToF-SIMS. The findings of this study are essential in expanding the ToF-SIMS library of paper and paper components, and demonstrates that multivariate analysis methods are needed for resolving the differences in spectral data of hierarchical materials.
Beskrivning
Ämne/nyckelord
ToF-SIMS, MVDA, paper composition
Citation
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Skala
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