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Uneven distribution of preservative in kiln-dried sapwood lumber of Scots pine: Impact of wood structure and resin allocation
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.ORCID-id: 0000-0002-3544-8716
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.ORCID-id: 0000-0002-7711-9267
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.
2012 (Engelska)Ingår i: Holzforschung, ISSN 0018-3830, E-ISSN 1437-434X, Vol. 66, nr 2, s. 251-258Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Scots pine (Pinus sylvestris L.) sapwood lumber was collected after kiln drying and preservative treatment with Celcure AC 800 (a copper-amine wood preservative). Distribution of the preservative throughout the lumber was visually examined. Not all, but some samples showed specific localized areas without any preservative distribution throughout their entire length. Those samples were assessed further for anatomical properties, specifically in impregnated and unimpregnated areas. Additional study was conducted on the morphological nature and redistribution of lipophilic extractives using three different histochemical staining methods. Intrinsic wood properties – especially the frequency of axial resin canals and the percentage of canals blocked – were found to be responsible for the irregular distribution of the preservative. Furthermore, the inability to create continuous and frequent interstitial spaces due to the collapse of thin-walled ray cells throughout the lumber resulted in uneven distribution of preservatives. Staining techniques were useful to localize places with more or less abundance of extractives (e.g., fats) in impregnated and unimpregnated wood, which varied considerably. Histochemical observations revealed information pertaining to the kiln dry specific distribution and redistribution of extractives between the areas. Moreover, resin reallocation and modification in ray parenchyma and resin canals induced by kiln drying would be another reason for the impregnation anomalies.

Ort, förlag, år, upplaga, sidor
2012. Vol. 66, nr 2, s. 251-258
Nationell ämneskategori
Biomaterial
Forskningsämne
Träfysik
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URN: urn:nbn:se:ltu:diva-5014DOI: 10.1515/HF.2011.126ISI: 000300740500015Scopus ID: 2-s2.0-84855905147Lokalt ID: 307d0408-7ce3-4533-8548-6a8bb55e0245OAI: oai:DiVA.org:ltu-5014DiVA, id: diva2:977888
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Validerad; 2012; 20110905 (ysko)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-07-10Bibliografiskt granskad

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Ahmed, Sheikh AliSehlstedt-Persson, MargotKarlsson, OlovMorén, Tom

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