Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2019
Authors
Charlotte Grosse Warren J. Grigsby Marion Noël Andreas Treu Marie-France Thévenon Philippe GérardinAbstract
When exposed to moisture, wood undergoes swelling and is susceptible to fungal degradation. Chemical modification via oligomeric lactic acid (OLA) treatment has been found to be a promising environmentally friendly solution to this disadvantage. In this study, wood was impregnated with OLA and then variously heat treated to polymerize the OLA in situ. The effect of curing temperature and time on OLA polymerization has been determined chemically. Dimensional stability was examined by water immersion and hygroscopicity measurements and biological decay resistance also evaluated. OLA impregnation followed by heat treatment enhanced wood properties. OLA cure at 160 °C for 48 h resulted in treated wood with greater dimensional stability and biological resistance.
Authors
M. P. G. Hofman M.W. Hayward Morten Heim P. Marchand Christer Moe Rolandsen Jenny Mattisson F. Urbano M. Heurich Atle Mysterud J. Melzheimer N. Morellet U. Voigt B.L. Allen B. Gehr C. Rouco W. Ullmann Øystein Holand Nicolai Hermann Jørgensen Geir Steinheim F. Cagnacci M. Kroeschel Petra Kaczensky B. Buuveibaatar J.C. Payne I. Palmegiani K. Jerina P. Kjellander Ö. Johansson S. LaPoint R. Bayrakcismith John Durrus Linnell M. Zaccaroni M.L.S. Jorge J.E.F. Oshima A. Songhurst C. Fischer R.T. Mc Bride Jr. J.J. Thompson S. Streif R. Sandfort Christophe Bonenfant M. Drouilly M. Klapproth D. Zinner R. Yarnell A. Stronza L. Wilmott Erling Meisingset M. Thaker A.T. Vanak S. Nicoloso R. Graeber S. Saïd M.R. Boudreau A. Devlin R. Hoogesteijn J.A. May-Junior J.C. Nifong John Odden H.B. Quigley F. Tortato D.M. Parker A. Caso J. Perrine C. Tellaeche F. Zieba T. Zwijacz-Kozica C.L. Appel I. Axsom W.T. Bean B. Cristescu S. Périquet K.J. Teichman S. Karpanty A. Licoppe V. Menges K. Black T.L. Scheppers S.C. Schai-Braun F. C. Azevedo F.G. Lemos A. Payne L.H. Swanepoel B.V. Weckworth A. Berger A. Bertassoni G. McCulloch P. Šustr V. Athreya D. Bockmuhl J. Casaer A. Ekori D. Melovski C. Richard-Hansen D. van de Vyver R. Reyna-Hurtado E. Robardet N. Selva A. Sergiel M.S. Farhadinia P. Sunde R. Portas H. Ambarli R. Berzins P.M. Kappeler G.K. Mann L. Pyritz C. Bissett T. Grant R. Steinmetz L. Swedell R.J. Welch D. Armenteras O.R. Bidder T.M. González A. Rosenblatt S. Kachel N. BalkenholAbstract
No abstract has been registered
Abstract
This study addresses changes in visual appearance of unpainted wood materials exposed outdoors. Specimens of aspen (Populus tremula), Norway spruce (Picea abies), untreated Scots pine (Pinus sylvestris), DMDHEU-modified Scots pine and acetylated Radiata pine (Pinus radiata) were exposed facing south in Ås, Norway for 62 weeks. During this period, mould growth coverage, lightness (L*) and the uniformity of the weather grey colour were assessed. Mould growth coverage was evaluated visually using a rating system. L* and the uniformity were evaluated using image analysis. The increase in mould rating of the wood materials developed in varying speed, but all specimens had reached the maximum rating after 42 weeks. Until then, the changes in L* correlated significantly with the mould rating. However, the specimens continued to darken after they had reached maximum mould rating. DMDHEU was the only material that obtained a more uniform colour as a consequence of the weathering.
Authors
O. Janne Kjønaas Teresa Gómez de la Bárcena Ryan Bright Mette Hanssen Gro Hylen Håvard Kauserud Tonje Økland Mundra Sunil Jørn-Frode Nordbakken Carlo AallAbstract
No abstract has been registered
Authors
O. Janne Kjønaas Teresa Gómez de la Bárcena Hansen Mette Sunil Mundra Håvard Kauserud Gro Hylen Tonje Økland Jørn-Frode NordbakkenAbstract
No abstract has been registered
Authors
Sylwia Wierzcholska Amy Elizabeth Eycott Fride Høistad Schei John-Arvid Grytnes Patryk Czortex Olga Cholewinska Bogdan JaroszewiczAbstract
No abstract has been registered
Authors
Amy Elizabeth Eycott Sylwia Wierzcholska Anna Lubek Martin Kukwa Wojciech Adamowski Fride Høistad Schei Bogdan JaroszewiczAbstract
No abstract has been registered
Abstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Inger Hansen Grete H. M. Jørgensen Marianne Gilhuus Kristian Dalskau-Ellingsen Cecilie Marie MejdellAbstract
No abstract has been registered