The Influence of Oil Uptake on Moisture Excluding Efficiency in Thermally Treated Wood

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F20%3A43918138" target="_blank" >RIV/62156489:43410/20:43918138 - isvavai.cz</a>
Result on the web
<a href="http://www.swst.org/wp/wp-content/uploads/2020/07/SWST-2020-Proceedings-Final-final-final.pdf" target="_blank" >http://www.swst.org/wp/wp-content/uploads/2020/07/SWST-2020-Proceedings-Final-final-final.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
The Influence of Oil Uptake on Moisture Excluding Efficiency in Thermally Treated Wood
Original language description
Thermal modification of wood is an environmentally friendly method for the improvement of wood water related properties hygroscopicity reduction, dimensional stability and resistance against fungal degradation which uses steam, nitrogen or oil as the heat transfer and oxygen excluding medium. High oil retention was proved during treatment in hot oil, especially when permeable wood species were used or the wood was kept to cool in oil bath. For comparison, hemp oil impregnated, and heat treated (200oC) European beech wood samples were prepared, and the combined treatment was used as well. After the treatment, the samples were held in standard conditions and above the water level. The equilibrium moisture content was lower in all treatments compared to untreated beech and all treatments showed good moisture excluding efficiency, especially in short-term exposure. The combined treatment reduced the wood hygroscopicity the most with moisture excluding efficiency of 27% for saturated air. However, there are two issues which can influence the moisture content measurement in oil treated wood increase in sample density/weight related to oil uptake after treatment and weight change caused by oxygen bonding during spontaneous drying process at the time of sample conditioning.
Czech name
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Czech description
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Project
<a href="/en/project/GJ19-25171Y" target="_blank" >GJ19-25171Y: Multi-scale Hygro-thermo-mechanical Behavior of Modified Wood-based Materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 2020 Society of Wood Science and Technology International Convention
ISBN
978-1-73404-850-6
ISSN
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e-ISSN
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Number of pages
9
Pages from-to
479-487
Publisher name
Society of Wood Science and Technology
Place of publication
Monona
Event location
Portorož
Event date
Jul 12, 2020
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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