Simultaneous Improvement of Surface Wettability and UV Resistance of Wood with Lignin-Based Treatments
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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15
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Polymers, Volume 15, issue 16
Abstract
Recent advancements in wood modification aim to enhance the inherent qualities of this versatile biological material, which includes renewability, ease of processing, and thermal insulation. This study focuses on evaluating the effectiveness of lignin as a protective agent for less durable wood species, namely, Pinus nigra and Fagus sylvatica L. The impregnation of wood with three various forms of lignin, such as kraft lignin, acetylated kraft lignin, and lignin nanoparticles, was carried out using the vacuum technique at room conditions. The results showed that the treatments significantly improve the hydrophobicity of wood surfaces, particularly in pine wood, and provide protection against UV ageing. Additionally, the treatments contributed to the stabilisation of moisture content at different humidity levels. Although slight colour variations were observed, their impact on the visual appearance was minimal, and the thermal analysis confirmed enhanced thermal properties. Additionally, plasma treatment further enhanced hydrophobicity after treatments, offering potential benefits in terms of moisture resistance and durability. The findings of this study highlight the promising effects of lignin-based treatments on wood properties, providing sustainable solutions for wood protection in various sectors. However, further optimisation is needed to fully explore the potential of lignin and lignin nanoparticles.Description
Funding Information: R. Herrera thanks the (IJC2020-043740-I) grant funded by MCIN/AEI/10.13039/501100011033 and by European Union NextGenerationEU/PRTR, and University of the Basque Country UPV/EHU (JDCI20/14) for the mobility grant. O. Gordobil acknowledges the financial support from the Spanish research agency (aei) (ryc-2021-031328-i) funded by mcin/aei/ 10.13039/501100011033 by European Union NextGenerationEU/prtr.4. Financial support from the Basque Government in the frame of Grupos Consolidados (IT-1498-22) and (IT-1690-22) is acknowledged. This research was funded by the European commission’s funding of the Innorenew project (grant agreement #739574 under the horizon 2020 widespread-2-teaming program) and the republic of Slovenia (investment funding from the republic of Slovenia and the European regional development fund). Co-funded by the European Union (ERC, ARCHI-SKIN, #101044468). Views and opinions expressed are, however, those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Council. Neither the European Union nor the granting authority can be held responsible for them. This research presents a preliminary study related to MULTI-WOOD project #101067636 funded by Horizon Europe MSCA PF. Publisher Copyright: © 2023 by the authors.
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Herrera, R, Poohphajai, F, Sandak, A & Gordobil, O 2023, 'Simultaneous Improvement of Surface Wettability and UV Resistance of Wood with Lignin-Based Treatments', Polymers, vol. 15, no. 16, 3409. https://doi.org/10.3390/polym15163409