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The impact of heartwood and sapwood on biological discoloration of a painted surface
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.ORCID iD: 0000-0002-4760-3787
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.
2016 (English)In: Proceedings of the 12th meeting of the Northern European Network for Wood Science and Engineering (WSE): Wood science and engineering - a key factor on the transition to Bioeconomy. September 12-13, 2016, Riga, Latvia / [ed] Bruno Andersons, Arnis Kokorevics, Riga: Latvian State Institute of Wood Chemistry , 2016, 137-142 p.Conference paper, Published paper (Other academic)
Abstract [en]

Wood material has advantages, it comes from a renewable source and it is easy to manage. But one disadvantage when used outdoors is biological discoloration of the material. Some impact on the discoloration is the presence of moisture and nutrients, necessary components for the microorganisms to grow and start a colonisation. Samples made of Norway spruce (Picea abies (L.) Karst) heartwood or sapwood coated with two different film forming paints was studied. The paints had a binder formula made of alkyd or acrylate. Additional parameters related to study the influence of moisture content on discoloration were high and low density material, with and without impregnation oil. Outdoor exposure was made during five years in the southern part of Sweden. The samples were hung with 45 degree inclination, facing south direction. Visual differences in biological surface discoloration were observed for samples within the same paint, which could be explained by differences in heartwood and sapwood.

Place, publisher, year, edition, pages
Riga: Latvian State Institute of Wood Chemistry , 2016. 137-142 p.
Keyword [en]
Discoloration, Heartwood, Sapwood, Paint
National Category
Wood Science
Research subject
Technology (byts ev till Engineering), Forestry and Wood Technology
Identifiers
URN: urn:nbn:se:lnu:diva-56687ISBN: 978-9934-14-981-8 (print)ISBN: 978-9934-14-982-5 (electronic)OAI: oai:DiVA.org:lnu-56687DiVA: diva2:973912
Conference
12th Northern European Network for Wood Science and Engineering (WSE) ,Riga, Latvia, 12-13 September, 2016
Available from: 2016-09-23 Created: 2016-09-23 Last updated: 2017-04-13Bibliographically approved

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CiteExportLink to record
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