Application of Microwave Heating for Acetylation of Beech (Fagus sylvatica L.) and Poplar (Populus hybrids) Wood
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F16%3A43917469" target="_blank" >RIV/62156489:43410/16:43917469 - isvavai.cz</a>
Result on the web
<a href="http://publicatio.nyme.hu/1056/1/Hardwood_2016_Proceedings_final_cover.pdf" target="_blank" >http://publicatio.nyme.hu/1056/1/Hardwood_2016_Proceedings_final_cover.pdf</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Application of Microwave Heating for Acetylation of Beech (Fagus sylvatica L.) and Poplar (Populus hybrids) Wood
Original language description
Wood is a natural heterogeneous composite and is considered to be dimensionally unstable when exposed to wet conditions. Hydroxyl (-OH) groups of hemicellulose and cellulose chains are mainly responsible for the highly hygroscopic behaviour of wood (STAMM 1964). Chemical modification can, for instance, be used as an efficient way to transform hydrophilic OH groups into larger hydrophobic groups (KOLLMANN 1951). Acetylation of wood is one of the most commonly used chemical treatments to improve the dimensional stability and biological durability of wood. Acetylation effectively changes free hydroxyls within the wood into acetyl groups (ROWELL ET AL. 2013). The standard acetylation process includes impregnation of ovendried wood with acetic anhydride (Ac2O), followed by conventional heating to initiate the chemical reactions with wood polymers. Time consumption is an important issue for the proposed acetylation method. In order to reduce the reaction time and make the process more effective, an innovative wood acetylation process that uses microwave (MW) energy has been recently studied (LARSSON AND SIMONSON 1999; LI ET AL. 2009). Unfortunately, published studies related to the acetylation process conducted using MW heating are still limited. Therefore, the present study aims to (1) analyze the acetylation process using MW heating, (2) evaluate the efficacy of MW heating on the chemical reactions during the process and its similarities with conventional methods, and (3) evaluate material properties (uptake of substances, equilibrium moisture content, wood swelling, and anti-swelling efficiency).
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20502 - Paper and wood
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the Eco-efficient resource wood with special focus on hardwoods
ISBN
978-963-334-291-6
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
54-55
Publisher name
University of West Hungary
Place of publication
Sopron
Event location
Sopron
Event date
Sep 8, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000473720100021