Chemical changes in thermally modified, acetylated and melamine formaldehyde resin impregnated beech wood
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F24%3A43925406" target="_blank" >RIV/62156489:43410/24:43925406 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1515/hf-2024-0013" target="_blank" >https://doi.org/10.1515/hf-2024-0013</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1515/hf-2024-0013" target="_blank" >10.1515/hf-2024-0013</a>
Alternative languages
Result language
angličtina
Original language name
Chemical changes in thermally modified, acetylated and melamine formaldehyde resin impregnated beech wood
Original language description
Wood modification (by thermal or chemical treatment) helps to improve the dimensional stability of wood and enhance its resistance to biological agents. Beech wood is non-durable and exposure in exterior settings dramatically shortens its service life. To determine the full potential of beech wood for advanced applications, a better understanding of the chemical changes induced by modification is needed. Two chemical treatments (acetylation and melamine formaldehyde resin impregnation) and three thermal treatments (heating to 180, 200 and 220 oC) were performed on beech wood. The modification effect was examined based on (i) molecular changes in functional groups by Fourier-transform infrared spectroscopy (ATR-FTIR); (ii) extractive content; and (iii) pH changes. Moreover, the explanation of these changes was supported by the FTIR-analysis of isolated main wood components (cellulose, holocellulose and lignin) from the modified wood. The high temperatures applied to samples during thermal modification promoted the deacetylation and degradation of hemicelluloses. Hemicelluloses were targeted also by acetic anhydride and melamine resin, the bonding of which was confirmed by FTIR analysis. The formation of fewer methylene bridges affected the properties of the melamine network. This observation suggests the need to determine optimal curing conditions in future research, to reduce melamine-wood hydrophilicity.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20502 - Paper and wood
Result continuities
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)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Holzforschung
ISSN
0018-3830
e-ISSN
1437-434X
Volume of the periodical
78
Issue of the periodical within the volume
8
Country of publishing house
DE - GERMANY
Number of pages
11
Pages from-to
459-469
UT code for WoS article
001268667600001
EID of the result in the Scopus database
2-s2.0-85199305492