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An XPS round robin investigation on analysis of wood pulp fibres and filter paper
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2005 (English)In: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 584, no 1, 126-132 p.Article in journal (Refereed)
Abstract [en]

X-ray photoelectron spectroscopy (XPS) has been applied to pulp and paper research for decades. However, there has been no attempt to standardise or even systematically compare experimental and analysis procedures, even though it is known that fibrous, nature-derived and insulating fibre materials pose remarkable challenges to reliable surface analysis. The experimental problems are mainly linked with neutralisation, energy resolution, contamination and X-ray induced degradation. We have tested applicability, reliability and reproducibility of XPS analysis on real pulp samples with varying lignin and extractives contents in a small round robin investigation. We also tested the instrumental set-ups with an acetone-extracted filter paper, used as a reference sample. The data, collected at four different laboratories with state-of-the-art instruments indicate that reproducible results can be obtained, despite minor differences in experimental and analysis procedures. However, we found that a specified sample handling procedure and limited X-ray exposure are crucial for reproducible, reliable data. Based on the round robin data we recommend dose restricted monochromatic measurements, a cellulosic in situ reference and a consistent sample handling procedure. The data confirms that a paper-based reference material and the correlation of high-resolution C 1s data with O/C atomic ratios can be used in testing instruments and experimental set-ups for pulp and paper materials.

Place, publisher, year, edition, pages
2005. Vol. 584, no 1, 126-132 p.
Keyword [en]
XPS, ESCA, cellulose, paper, surface analysis, round robin
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27496OAI: oai:DiVA.org:ri-27496DiVA: diva2:1054501
Note
A1735Available from: 2016-12-08 Created: 2016-12-08Bibliographically approved

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