Surface properties of coated MDF pre-treated with atmospheric plasma and the influence of artificial weathering

Žigon, Jure (author), Pavlič, Matjaž (author), Petrič, Marko (author), Dahle, Sebastian (author)

A non-thermal plasma treatment generated in air at atmospheric pressure was used for surface modification of medium density fiberboard (MDF) substrate. Untreated and plasma-treated substrates were coated with a waterborne acrylic coating and exposed to accelerated artificial weathering (AAW) in interior mode. Plasma treatment increased the surface free energy of MDF by about 50%, which positively influenced on the wettability of the MDF with the coating. Weathering of the coated MDF caused a decrease in surface gloss and color changes, which were less pronounced for plasma-treated samples. Attenuated total reflection Fourier transform infrared spectra and microscopic analysis revealed degradation of the acrylic resin on the coated MDF due to light irradiation during weathering. After 250 h of weathering, the surface roughness of the coated MDF increased by about 3 μm. The coated MDF surfaces started to lose their hydrophobic character after 50 h of weathering. Finally, the determination of mechanical properties showed that coated MDF became more resistant to scratching during AAW, while the adhesion of the coating film to the MDF substrate was not affected in a significant trend with time of AAW. In both cases, no influence of plasma treatment was detected.

• Language: English
• Keywords: coating, medium density fiberboard, plasma, surface, weathering
• 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: 12 str.
• Numbering: Vol. 263, art. 124358
• PID: 20.500.12556/RUL-138640
• UDC: 630*8
• ISSN on article: 0254-0584
• DOI: 10.1016/j.matchemphys.2021.124358
• COBISS.SI-ID: 53436419
• Publication date in RUL: 05.08.2022

Record is a part of a journal

• Title: Materials chemistry and physics
• Shortened title: Mater. chem. phys.
• Publisher: Elsevier
• ISSN: 0254-0584
• COBISS.SI-ID: 15481349

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: vlaknene plošče, premazi, plazma, površine, staranje

Projects

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

• 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