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X-ray computed tomography on chemically modified wood
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Material och ytteknik.
Department of Chemistry Surface and Corrosion Science, KTH Royal Institute of Technology.
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2016 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Mapping and visualization of structural changes due to the modification of wood would increase the understanding of chemical modification processes and facilitate optimization of the process parameters. The 2D and 3D microstructure of acetylated and furfurylated softwood and hardwood were visualized using X-ray computed tomography and some anatomical features were investigated such as total porosity, cell wall thickness and maximum opening of tracheid lumens. The wetting properties of chemically modified samples were related to the microstructural properties. Significant changes in the wood structure were observed for furfurylated sapwood samples mainly indicated by a change in tracheid shape and filling of tracheids by furan polymer, whereas no microstructural changes were noted for acetylated samples. Furfurylation significantly decreased the porosity of the sample in both earlywood and latewood regions; whereas for acetylated samples the total porosity of modified and unmodified samples was rather similar. This is in line with results of wetting showing that furfurylation reduced both swelling and capillary uptake in contrast to acetylation which reduced mostly swelling.

Place, publisher, year, edition, pages
2016.
Keyword [en]
acetylation, furfurylation, microstructure, X-ray Computed Tomography, wettability
National Category
Wood Science Physical Chemistry Analytical Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-27781OAI: oai:DiVA.org:ri-27781DiVA: diva2:1062784
Conference
12th Annual Meeting of the Northern European Network for Wood Science and Engineering WSE, Riga, Latvia, September 12-13, 2016
Available from: 2017-01-08 Created: 2017-01-08 Last updated: 2017-01-08Bibliographically approved

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Power point presentation(3938 kB)12 downloads
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File name FULLTEXT01.pdfFile size 3938 kBChecksum SHA-512
248da0db580f1ce3f0239ab7287d42512ff99b3560c18e744369ded5412202aebf016781b37af4d361e9c667e933936d5e6372f17094cc0b7b9a54ef89a7ec95
Type fulltextMimetype application/pdf

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Material och ytteknik
Wood SciencePhysical ChemistryAnalytical Chemistry

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
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  • Other locale
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