Skip to main content
Log in

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

European Journal of Wood and Wood Products Aims and scope Submit manuscript

Abstract

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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

References

Download references

Acknowledgements

This work was financially supported by the research grant of Technology Agency of the Czech Republic (TAČR), project number TG02010074 and by the Scientific Grant Agency of the Ministry of Education SR and the Slovak Academy of Sciences Grant no. 1/0822/17. The authors wish to acknowledge support from Tadeáš Rozboril and František Foret concerning laboratory work.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Dita Machová.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Machová, D., Baar, J., Paschová, Z. et al. Color changes and accelerated ageing in oak wood treated with ammonia gas and iron nanoparticles. Eur. J. Wood Prod. 77, 705–716 (2019). https://doi.org/10.1007/s00107-019-01406-x

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00107-019-01406-x

Navigation