Number of the records: 1  

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

  1. 1.
    SYSNO ASEP0503925
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleColor changes and accelerated ageing in oak wood treated with ammonia gas and iron nanoparticles
    Author(s) Machová, Dita (UTAM-F) RID, ORCID
    Baar, J. (CZ)
    Paschová, Z. (CZ)
    Pařil, P. (CZ)
    Křenková, Jana (UIACH-O) RID, ORCID
    Kúdela, J. (SK)
    Number of authors6
    Source TitleEuropean Journal of Wood and Wood Products - ISSN 0018-3768
    Roč. 77, č. 4 (2019), s. 705-716
    Number of pages12 s.
    Publication formPrint - P
    Languageeng - English
    CountryDE - Germany
    Keywordsoak wood ; color modifying procedure ; color stability
    Subject RIVJK - Corrosion ; Surface Treatment of Materials
    OECD categoryCoating and films
    Subject RIV - cooperationInstitute of Analytical Chemistry - Analytical Chemistry, Separation
    Method of publishingLimited access
    Institutional supportUTAM-F - RVO:68378297 ; UIACH-O - RVO:68081715
    UT WOS000471701800019
    EID SCOPUS85064488788
    DOI10.1007/s00107-019-01406-x
    AnnotationThe 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.
    WorkplaceInstitute of Theoretical and Applied Mechanics
    ContactKulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 222 365 991
    Year of Publishing2020
    Electronic addresshttps://doi.org/10.1007/s00107-019-01406-x
Number of the records: 1