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A combined view on composition, molecular structure, and micromechanics of fungal degraded softwood
Vienna University of Technology, Austria.
Vienna University of Technology, Austria.ORCID-id: 0000-0002-7829-4630
Vienna University of Technology, Austria.
Vienna University of Technology, Austria.
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2015 (Engelska)Ingår i: Holzforschung, ISSN 0018-3830, E-ISSN 1437-434X, Vol. 69, nr 4, s. 471-482Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Fungal decay alters the composition, microstructure, and mechanical properties of wood cell walls. To understand better the structure-function relationships during fungal decay, selected annual rings of fungal deteriorated Scots pine sapwood were analyzed in terms of their composition, microstructure, and micromechanical properties. The datasets were acquired separately for earlywood and latewood concerning the S2 cell wall layer and the cell corner middle lamella (CCML) and analyzed by means of principal component analysis and partial least squares regression analysis. Links between cell wall stiffness and hardness and the composition and microstructure could be established. Increased mechanical properties in the CCML, as obtained by nanoindentation, were correlated to the degradation of pectins. In the S2 layer, the altered data were related to the degradation of hemicelluloses and lignin modification during fungal decay.

Ort, förlag, år, upplaga, sidor
2015. Vol. 69, nr 4, s. 471-482
Nationell ämneskategori
Trävetenskap Kompositmaterial och -teknik
Forskningsämne
Teknik, Skog och träteknik; Teknik, Byggteknik
Identifikatorer
URN: urn:nbn:se:lnu:diva-51215DOI: 10.1515/hf-2014-0023OAI: oai:DiVA.org:lnu-51215DiVA, id: diva2:913869
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Tillgänglig från: 2016-03-22 Skapad: 2016-03-22 Senast uppdaterad: 2017-11-30Bibliografiskt granskad

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Förlagets fulltexthttp:////www.degruyter.com/view/j/hfsg.2015.69.issue-4/hf-2014-0023/hf-2014-0023.xml

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Bader, Thomas K.

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