Visualization of Fibre Products Using ToF-SIMS and Multivariate Data Analysis
Typ
Examensarbete för masterexamen
Program
Innovative and sustainable chemical engineering (MPISC), MSc
Publicerad
2021
Författare
Leksuntrakorn, Jutima
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
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