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Treatment of wood with atmospheric plasma discharge : study of the treatment process, dynamic wettability and interactions with a waterborne coating
ID Žigon, Jure (Author), ID Pavlič, Matjaž (Author), ID Kibleur, Pierre (Author), ID Van den Bulcke, Jan (Author), ID Petrič, Marko (Author), ID Van Acker, Joris (Author), ID Dahle, Sebastian (Author)

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Abstract
Plasma treatment is becoming a mature technique for modification of surfaces of various materials, including wood. A better insight in the treatment process and the impact of the plasma on properties of wood bulk are still needed. The study was performed on Norway spruce and common beech wood, as well as their thermally modified variations. The formations of the airborne discharge, as well as mass changes of the treated wood, were monitored. The impact of such treatment on wood-coating interaction was investigated by evaluating the dynamic wettability and penetration into wood. At the wood surface, plasma streamers were observed more intense on denser latewood regions. Wood mass loss was higher with increasing number of passes through the plasma discharge and was lower for thermally modified wood than for unmodified wood. Plasma treatment increased the surface free energy of all wood species and lowered the contact angles of a waterborne coating, these together indicating enhanced wettability after treatment. Finally, the distribution and penetration depth of the coating were studied with X-ray microtomography. It was found that the coating penetrated deeper into beech than into spruce wood. However, the treatment with plasma increased the penetration of the coating only into spruce wood.

Language:English
Keywords:beech, coatings, plasma, spruce, wettability, wood
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Publication status:Published
Publication version:Version of Record
Year:2021
Number of pages:Str. 603-613
Numbering:Vol. 75, iss. 7
PID:20.500.12556/RUL-138685 This link opens in a new window
UDC:630*8
ISSN on article:1437-434X
DOI:10.1515/hf-2020-0182 This link opens in a new window
COBISS.SI-ID:43142147 This link opens in a new window
Publication date in RUL:09.08.2022
Views:365
Downloads:73
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Record is a part of a journal

Title:Holzforschung
Shortened title:Holzforschung
Publisher:De Gruyter
ISSN:1437-434X
COBISS.SI-ID:22548741 This link opens in a new window

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.

Secondary language

Language:Slovenian
Keywords:bukev, premazi, plazma, smreka, omočljivost, les

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P4-0015
Name:Les in lignocelulozni kompoziti

Funder:Other - Other funder or multiple funders
Funding programme:Research Foundation – Flanders (FWO), SBO project
Project number:S003418N
Acronym:MoCCHa-CT

Funder:EC - European Commission
Funding programme:H2020
Project number:745936
Name:Demonstration and implementation of an integrated process for the Plasma-Enhanced Chemical Solution Deposition of PMMA-multicomponent coatings on wood and wood-based substrates
Acronym:PlasmaSolution

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