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Title: Furfurylation of Pinus pinaster Wood
Authors: Esteves, B.
Nunes, L.
Pereira, H.
Keywords: Ase;Furfurylation;Bending strength;Emc;Moe;Pinus pinaster;Wpg
Issue Date: 27-Apr-2009
Publisher: SP Technical Research Institute of Sweden, Wood Technology
Series/Report no.: Comunicação
Abstract: Furfurylation was tested with maritime pine wood (Pinus pinaster Aiton,) which is the most important pine species in Portugal. The wood was treated with a furfuryl alcohol mixture (FA 70 mix) at Kebony Products DA in Norway, in an autoclave using vacuum and pressure stages and subsequently cured and dried in a vacuum drying kiln. Both heartwood and sapwood were treated, with weight percent gains of 38% and 23% respectively. There were no significant changes on MOE and bending strength. Janka hardness increased 56% and 49%, on radial and tangential sections, respectively. Equilibrium moisture content decreased in the sapwood from 8.9 to 5.1% (at 35% relative humidity), from 12.9 to 7.3% (at 65%) and from 17.3 to 9.0% (at 85%). In heartwood the moisture decrease was very small. The dimensional stability of sapwood increased with ASE35 35.6 and 41.8%, ASE65 29.0 and 43.4% and ASE85 31.4 and 45.1% for radial and tangential directions respectively. The improvements for heartwood were smaller and only significant in the tangential direction and at the higher relative humidity values: ASE65 was 12.3 and 22.4% and ASE 85 10.5 and 24.8% for radial and tangential directions, respectively.
ISBN: 978-91-86319-36-6
Appears in Collections:DE/NCE - Comunicações a congressos e artigos de revista

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