Decay resistance of ammonia-plasticised and densified beech wood
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F23%3A43920607" target="_blank" >RIV/62156489:43410/23:43920607 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1080/17480272.2021.2003860" target="_blank" >https://doi.org/10.1080/17480272.2021.2003860</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/17480272.2021.2003860" target="_blank" >10.1080/17480272.2021.2003860</a>
Alternative languages
Result language
angličtina
Original language name
Decay resistance of ammonia-plasticised and densified beech wood
Original language description
Degradation by wood-rotting fungi has been studied in Lignamon and beech wood modified by the Lignamon process. Different treatments that are used during Lignamon process were applied: gaseous ammonia treatment, densification (20 and 40% compression ratio) and heat treatment (180oC). These specimens were exposed to Trametes versicolor and Coniophora puteana for 16 weeks and the mass loss was evaluated. Changes in chemical structure, nitrogen content and pH caused by individual treatments or by fungal activity were also determined. The wood nitrogen content increased after ammonia treatment (1.0%) and was the highest in Lignamon (1.4%), its release during water leaching was very slow. The chemical analysis of wood revealed slight changes in the polysaccharide and lignin content in wood treated with ammonia. Bonded nitrogen was in the form of amides, which were partially thermally degraded by heat treatment. Neither densification nor heat treatment led to better resistance of wood against fungi, while ammonia treatment significantly restricted mass losses (C. puteana 2.5%; T. versicolor 7.5%) compared to untreated wood (both about 30%). Lignamon showed the best fungi resistance (mass loss < 5%), which was probably caused by the combined effect of hemicellulose degradation, an increased nitrogen content, and wood densification.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10611 - Plant sciences, botany
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
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Wood Material Science and Engineering
ISSN
1748-0272
e-ISSN
1748-0280
Volume of the periodical
18
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
172-183
UT code for WoS article
000723053000001
EID of the result in the Scopus database
2-s2.0-85119960600