Počet záznamů: 1  

Color changes and accelerated ageing in oak wood treated with ammonia gas and iron nanoparticles

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    SYSNO ASEP0503925
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevColor changes and accelerated ageing in oak wood treated with ammonia gas and iron nanoparticles
    Tvůrce(i) Machová, Dita (UTAM-F) RID
    Baar, J. (CZ)
    Paschová, Z. (CZ)
    Pařil, P. (CZ)
    Křenková, Jana (UIACH-O) RID
    Kúdela, J. (SK)
    Celkový počet autorů6
    Zdroj.dok.European Journal of Wood and Wood Products - ISSN 0018-3768
    Roč. 77, č. 4 (2019), s. 705-716
    Poč.str.12 s.
    Forma vydáníTištěná - P
    Jazyk dok.eng - angličtina
    Země vyd.DE - Německo
    Klíč. slovaoak wood ; color modifying procedure ; color stability
    Vědní obor RIVJK - Koroze a povrchové úpravy materiálů
    Obor OECDCoating and films
    Vědní obor RIV – spolupráceÚstav analytické chemie - Analytická chemie, separace
    Způsob publikováníOmezený přístup
    Institucionální podporaUTAM-F - RVO:68378297 ; UIACH-O - RVO:68081715
    UT WOS000471701800019
    EID SCOPUS85064488788
    DOI10.1007/s00107-019-01406-x
    AnotaceThe 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.
    PracovištěÚstav teoretické a aplikované mechaniky
    KontaktKulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 222 365 991
    Rok sběru2020
    Elektronická adresahttps://doi.org/10.1007/s00107-019-01406-x
Počet záznamů: 1