Abstract
Wood furfurylation is a modification method that improves several wood properties. Thereby wood is impregnated with a solution of furfuryl alcohol, catalysts and water, in general. The objective of this study was to understand the penetration of furfuryl alcohol into wood. Furthermore, a possible relationship between the substance amount and the swelling behaviour should be determined. To this end microscopic investigations were conducted to describe the temporal process of penetration and swelling. It was found that the swelling coefficients differ at the microscopic and macroscopic level. The microscopic swelling can reach twice the values of macroscopic swelling.
Zusammenfassung
Die Furfurylierung von Holz ist eine Modifikationsmethode zur Verbesserung verschiedener Holzeigenschaften. Dazu wird Holz im Allgemeinen mit einer Lösung aus Furfurylalkohol, Katalysatoren und Wasser imprägniert. Um das Penetrationsverhalten zu beschreiben wurden mikroskopische Untersuchungen an imprägnierten Proben durchgeführt. Des Weiteren wurde der Einfluss der Furfurylalkoholkonzentration auf das Quellverhalten untersucht. Es konnte festgestellt werden, dass sich die Quellungskoeffizienten im mikroskopischen und makroskopischen Bereich stark unterscheiden. Der mikroskopische Quellungskoeffizient kann doppelt so hoch sein wie der äußere, makroskopische Wert.
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Acknowledgments
The research project, this publication is based on, is financially supported by the Federal Ministry of Economics and Technology of Germany. This project (Grant Reference 16735 BR) of the research community IVTH (International Association for Technical Issues) was processed by the AiF (Working Committee of Industrial Research Communities) as funding of the Industrial Community Research (IGF).
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Buchelt, B., Dietrich, T. & Wagenführ, A. Macroscopic and microscopic monitoring of swelling of beech wood after impregnation with furfuryl alcohol. Eur. J. Wood Prod. 70, 865–869 (2012). https://doi.org/10.1007/s00107-012-0631-x
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DOI: https://doi.org/10.1007/s00107-012-0631-x