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Title:Sustainable biocarbon/tung oil coatings with hydrophobic and UV-shielding properties for outdoor wood substrates
Authors:ID Marrot, Laetitia Sarah Jennifer (Author)
ID Zouari, Mariem (Author)
ID Schwarzkopf, Matthew (Author)
ID DeVallance, David Brian (Author)
Files:URL URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0300944023000243?via%3Dihub
 
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Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:With wood regaining substantial interest as a construction material due to sustainability concerns and aesthetics trends, efficient and safe protection methods are needed to prevent the discouloration and the loss of mechanical properties of this renewable and UV-sensitive material. In this study, sustainable coatings comprising 0 to 20 wt % biocarbon (BC) dispersed in tung oil were developed for wood protection. BC particles were added as ultraviolet (UV) absorbers and were produced by various carbonization routes. The BC powders were characterized in terms of particle size and surface functional groups by Fourier-Transform infrared, and the UV and visible absorbance of dispersed BC powders in water solutions were related to these characteristics. Two wooden substrates (beech and oak) were coated with the developed coatings and the samples underwent six months of onsite weathering. While the total colour change of uncoated samples and tung oil-coated substrates without BC kept increasing over time and resulted in a clear alteration of the wood surface aesthetics, an increased BC content in the coatings led to enhanced colour stability, with alteration of the colour close to 2 for both wood species after six months of weathering for 10 and 20 wt% BC. Coating with tung oil made the wooden substrates, initially hydrophilic, become hydrophobic, and the further introduction of biocarbon increased hydrophobicity. However, the increase in BC content was not correlated with an increase in water repellence, the highest water contact angle being observed for 5 % BC, and no further improvement in hydrophobicity was observed with higher BC content. The weathering negatively affected the water repellence of all the samples (i.e., reference samples and coated samples with various BC content). However, the introduction of 20 % BC best protected the decrease in water repellence induced by the onsite weathering.
Keywords:biocarbon, biochar, coating, wood protection, hydrophobic coating, wettability
Publication status:Published
Publication version:Version of Record
Publication date:25.01.2023
Publisher:Elsevier
Year of publishing:2023
Number of pages:str. 1-10
Numbering:Vol. 177, [article no.] 107428
PID:20.500.12556/DiRROS-16239 New window
UDC:620.1/.2
ISSN on article:1873-331X
DOI:10.1016/j.porgcoat.2023.107428 New window
COBISS.SI-ID:140658435 New window
Copyright:© 2023 The Authors. Published by Elsevier B.V.
Note:Nasl. z nasl. zaslona; Opis vira z dne 3. 2. 2023;
Publication date in DiRROS:30.05.2023
Views:996
Downloads:851
Metadata:XML DC-XML DC-RDF
:
MARROT, Laetitia Sarah Jennifer, ZOUARI, Mariem, SCHWARZKOPF, Matthew and DEVALLANCE, David Brian, 2023, Sustainable biocarbon/tung oil coatings with hydrophobic and UV-shielding properties for outdoor wood substrates. Progress in organic coatings [online]. 2023. Vol. 177, no. 107428, p. 1–10. [Accessed 6 April 2025]. DOI 10.1016/j.porgcoat.2023.107428. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=16239
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Record is a part of a journal

Title:Progress in organic coatings
Publisher:Elsevier
ISSN:1873-331X
COBISS.SI-ID:23026949 New window

Document is financed by a project

Funder:EC - European Commission
Funding programme:H2020
Project number:898179
Name:FAçade bio-CArbon based anti UV coating to prevent DEterioration of wooden buildings
Acronym:FACADE
Funder:EC - European Commission
Funding programme:H2020
Project number:952395
Name:Fire-safe Sustainable Built Environment
Acronym:FRISSBE
Funder:EC - European Commission
Funding programme:H2020
Project number:739574
Name:Renewable materials and healthy environments research and innovation centre of excellence
Acronym:InnoRenew CoE

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:17.01.2023
Applies to:Text and Data Mining valid from 2023-04-01 Version of Record valid from 2023-01-17

Secondary language

Language:Slovenian
Keywords:ogljik, oglje, premaz, zaščita lesa, hidrofobni premaz, omočljivost


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