Počet záznamů: 1
Color changes and accelerated ageing in oak wood treated with ammonia gas and iron nanoparticles
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SYSNO ASEP 0503925 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Color changes and accelerated ageing in oak wood treated with ammonia gas and iron nanoparticles Tvůrce(i) Machová, Dita (UTAM-F) RID, ORCID, SAI
Baar, J. (CZ)
Paschová, Z. (CZ)
Pařil, P. (CZ)
Křenková, Jana (UIACH-O) RID, ORCID
Kúdela, J. (SK)Celkový počet autorů 6 Zdroj.dok. European Journal of Wood and Wood Products. - : Springer - ISSN 0018-3768
Roč. 77, č. 4 (2019), s. 705-716Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova oak wood ; color modifying procedure ; color stability Vědní obor RIV JK - Koroze a povrchové úpravy materiálů Obor OECD Coating and films Vědní obor RIV – spolupráce Ústav analytické chemie - Analytická chemie, separace Způsob publikování Omezený přístup Institucionální podpora UTAM-F - RVO:68378297 ; UIACH-O - RVO:68081715 UT WOS 000471701800019 EID SCOPUS 85064488788 DOI https://doi.org/10.1007/s00107-019-01406-x Anotace The aim was to evaluate the oak wood discoloration after ammonification and after alternative treatment by iron nanoparticles, the effect of extractive content on this color change, and the color stability of the treated wood during weathering. Alterations in the color space CIEL*a*b*of the modified oak wood were evaluated and the values were compared with the color spaces of untreated recent and subfossil oak wood. The results demonstrate noticeable color darkening for both treatments. The a* and b* values in the wood modified with ammonium were also reduced. For both treatments, a significant correlation was found between the extractive content and the overall color change. Additionally, the color stability of the modified oak wood during accelerated ageing under diverse external conditions was studied. The color change caused by the artificial conditions was measured on modified oak heartwood samples and the values were compared with the color stability of recent and subfossil oak wood. The results demonstrate that all the test specimen sets underwent photodegradation. The best color stability in the dry mode was attained with the ammonium-modified wood and the maximum impact of weathering was detected for the iron nanoparticles treatment during the wet mode. Pracoviště Ústav teoretické a aplikované mechaniky Kontakt Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Rok sběru 2020 Elektronická adresa https://doi.org/10.1007/s00107-019-01406-x
Počet záznamů: 1