Colour and Chemical Changes of Black Locust Wood during Heat Treatment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F23%3A43923019" target="_blank" >RIV/62156489:43410/23:43923019 - isvavai.cz</a>
Alternative codes found
RIV/60460709:41310/23:96168 RIV/68407700:21110/23:00374298
Result on the web
<a href="https://doi.org/10.3390/f14010073" target="_blank" >https://doi.org/10.3390/f14010073</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/f14010073" target="_blank" >10.3390/f14010073</a>
Alternative languages
Result language
angličtina
Original language name
Colour and Chemical Changes of Black Locust Wood during Heat Treatment
Original language description
Black locust is a fast-growing deciduous tree species with multiple industrial purposes due to its valuable traits. However, the heterogeneity of colour distribution between sapwood and heartwood limits its application. Thermal modification is an environment-friendly technology for improving various wood properties, especially dimensional stability, decay resistance, and colour homogeneity. In this work, black locust (Robinia pseudoacacia L.) wood samples were thermally modified at temperatures of 160, 180, and 210 oC. Extractives and main wood components were analysed by wet chemical methods, colour was measured by spectrometry, and structural changes by Fourier transform infrared spectroscopy. The obtained results show that the darkening of black locust wood, unlike other wood species of the temperate zone, is mainly caused by changes in extractives. Their content decreases during thermal treatment, but new chromophores are formed, especially in quinones. Degradation of hemicelluloses and the partial degradation of cellulose also contribute to colour changes. At higher temperatures, condensation reactions can occur in lignin, leading to the formation of some chromophores. Statistical analysis confirmed that temperature can be considered a very significant factor affecting the colour of the wood surface.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
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
Forests
ISSN
1999-4907
e-ISSN
1999-4907
Volume of the periodical
14
Issue of the periodical within the volume
1
Country of publishing house
CH - SWITZERLAND
Number of pages
13
Pages from-to
73
UT code for WoS article
000917597100001
EID of the result in the Scopus database
2-s2.0-85146787840