Your search resulted in 423 documents. Displaying 25 entries per page.
Chemical defense of trees and wood natural durability: from protection to valorization
2019 - IRG/WP 19-10943
Natural durability of wood is defined as “the inherent resistance of wood against various wood-destroying organisms” (European standard EN 350-1). This property is due in particular to heartwood extractives. However, the wood natural durability is included in a wider defense system, and other organs such as bark and roots also host protective compounds. Studying the mechanisms on which global ...
E Houel, D Stien, N Amusant
COPPER NAPHTHENATE: A Product for All Seasons: Protecting the Americas’ Infrastructure for Over 100 Years and Potential for Expanded Usage in Europe
2019 - IRG/WP 19-30738
This paper is a brief review of the history and use of the wood preservative Copper Naphthenate, with a focus on use patterns within the USA and opportunities for expansion in Europe and Canada. This paper reviews how copper naphthenate has performed to preserve and protect cellulosic and wooden items essential to critical infrastructure, and why it is the ideal choice for use in the replacement o...
M H Freeman, J A Brient, M Manning
Biosourced hybrid phenolic resins as coatings for the protection of wood and wood composites
2019 - IRG/WP 19-30745
Biosourced phenolic resins, based on the phenol-formaldheyde (PF) type, were prepared for their application as coating for wood and wood composites protection, especially against fire. The resins were synthesized by combining an organic polymeric matrix with another inorganic phase. The organic phase was prepared substituting phenol by natural phenolic compounds such as lignin and tannins. The ino...
P L de Hoyos-Martínez, R Herrera, J Labid, F Charrier El Bouhtoury
Wood Protection Through Diffusion: Dimensional Stabilisation with Amine Oxides
2019 - IRG/WP 19-30747
Wood is a phenomenal construction material. In addition to its great physical properties and its beautiful appearance, it possesses many environmental-friendly virtues like the sequestration of carbon dioxide. It is however subject to dimension changes when submitted to fluctuating moistures levels, which can lead to warps, cracks and the peeling of paints. Many water repellents can slow down the ...
S Pepin, P Blanchet, V Landry
Exemplary aboveground hardwood protection from Coptotermes curvignathus under weathered conditions conferred by proprietary microemulsion-based cypermethrin (SARPECO®) and permethrin (AXIL®) biocides
2019 - IRG/WP 19-30749
SARPECO® (with cypermethrin) and AXIL® (with permethrin) solutions are water-based wood preservatives approved for dipping treatment providing 25 years of termite protection for solid wood and wood-based products in Europe and for more than 10 years in Indonesia. SARPECO® and AXIL® solutions are patented formulations based on concentrated microemulsions (ME) diluted with water as a dipping tre...
D Messaoudi, A H H Wong, C A D Tawi, N Bourguiba, O Fahy
Using X-ray scattering to elucidate the mechanisms behind the moisture and fungal decay resistance of epoxybutene modified wood
2019 - IRG/WP 19-40854
Chemical modification of the hydroxyl groups of wood can improve the properties of wood by providing moisture and biological resistance, as well as dimensional stability. Southern pine solid wood was chemically modified to various weight percentage gains (WPG) with epoxybutene (EpB, 8%-38% WPG). After modification, specimens were extracted with a toluene: ethanol (2:1) solution for 2 hours or wate...
R E Ibach, N Plaza
Potential Use of the Pigment from Scytalidium cuboideum and Chlorociboria aeruginosa as an UV-light Protection Additive in Oil Finishes
2019 - IRG/WP 19-40868
UV-light degradation of wood is one of the top reasons for consumer replacement of outdoor wooden structures. This type of degradation is seldom mechanical, and is instead often motivated by loss of aesthetics (graying). There are numerous commercial products available on the market that deal with this loss of color, many of which contain added pigments to ‘rejuvenate’ or ‘revitalize’ grey...
S M Vega Gutierrez, D W Stone, R He3, P T Vega Gutierrez, Z M Walsh, S C Robinson
Charring of Norway spruce wood surface – an alternative surface modification technique?
2019 - IRG/WP 19-40870
Charring is an old wood surface treatment technique, mainly performed on wooden façade elements with the aesthetical aims, but also with the purpose of protection. This flame treatment method can be grouped into heat treatment processes. Below the top charred layer of damaged wood there is a layer which is during flame treatment exposed to high temperatures in anoxic or semi-anoxic conditions. Th...
M Petric, M Pavlic, J Zigon
Improvement of wood decay and termite durability resulting from combined treatments based on borax/phenol-formaldehyde impregnation followed by thermal modification
2019 - IRG/WP 19-40871
This study determined the factors influencing the boron content after leaching of pine blocks impregnated with aqueous solution of phenol-formaldehyde (PF) resin with or without borax and subjected to heat treatment by response surface methodology. An experimental design permits to analyze the effects of heat treatment temperature (150, 185 and 220°C), curing time (5, 12, 5 and 20 hours), resin c...
S Salman, M-F Thevenon, A Petrissans, S Dumarcay, P Gerardin
Protecting wood exterior infrastructures above ground in Spain. The importance of protection by design in the performance
2019 - IRG/WP 19-40874
Across Spain is very common to find wood exterior infrastructures build mainly in sawn and glue-laminated wood. Most of these exterior wood infrastructures use softwood wood species such as: fir, spruce, larch and pine. In Spain exterior wood infrastructures, became more and more popular since nineties, when sawn and glue-laminated wood were utilized for building exterior wood infrastructures in o...
D Lorenzo, M Touza, J Fernandez-Golfín, A Lozano, J Benito, M T Troya, L Robertson
The impact of additional interior layers to the moisture dry-out and mould growth risk of CLT walls
2019 - IRG/WP 19-40876
The objective of this study was intended to determine the maximum allowable initial moisture content for CLT walls having both exterior and interior thermal insulation. A laboratory test was conducted, for which four test walls with two different insulation solutions and two different initial moisture contents were built. Based on the test results a simulation model was configured and simulations ...
V Kukk, J Kers, T Kalamees
Engineered wood constructions in Brazil: the challenge of protection against biodeterioration for market growth
2019 - IRG/WP 19-40878
This paper presents some thoughts about Brazilian wood constructions market regarding to biodeterioration and protection against biodeterioration, especially termites. Despite of being a forestry country, there is no tradition in wood engineered buildings and some prejudice must be overcome.
New companies are interested in this market and as a continental country, different problems regarding of...
L F T di Romagnano, S Brazolin, G A da Silva, G A C Lopez
Wood protection techniques and natural weathering: their effect on aesthetics and preference of people
2019 - IRG/WP 19-50351
Current research successfully contributes to improving wood protection techniques. However, the vast majority of research on preventing degradation of wood ignores a critical aspect of making successful products and processes – user selection of materials, which may largely depend on the aesthetical qualities. Wood treatments change the tactile and visual properties of wood substantially and the...
D Lipovac, M D Burnard, A Sandak, J Sandak
Knowledge exchange and transfer from academia to industry in the field of wood protection research – Activities of the IRG-WP Communications Committee
2019 - IRG/WP 19-50354
The International Research Group on Wood Protection (IRG) was founded in 1969 as a structured group of like-minded scientists and technologists focused on generating knowledge of the science of wood deterioration, and novel solutions to provide sustainably and environmentally responsible products for the protection of wood-based materials. The primary function of the IRG is to provide opportunitie...
F Latorre, B Abbott, C Brischke, M Humar, D Jones, E Larnoy, L Nunes, A Preston, T Singh
The InnovaWood Module Bank: Building an international e-learning platform for shared MSc courses in wood science and technology
2019 - IRG/WP 19-50355
The InnovaWood Module Bank is a shared e-Learning platform for standalone science, technology and education modules in wood science. A group of members of InnovaWood have committed to jointly develop this platform. The institutes benefit in that they can widen the range of courses they offer and use their teaching capacities more efficiently. Students obtain the possibility to take online courses ...
M Irle, U Kies, H Militz, P Sauerbier, M Vieux, A Prosic, B Wolfsberger, F Pichelin, I Mayer
Towards better integration of wood protection in the forestry wood industry chain - a case study on hybrid poplar
2019 - IRG/WP 19-50359
Wood and wood products are limited in service life as in the forest ecosystem trees at end of their life are degraded to re-enter the bio-geochemical cycle. Humans can select wood species with a level of natural durability fit for an envisaged end use. Mainly those applications that require a long service life under conditions that are similar to those at soil level in a forest ecosystem have been...
J Van Acker
Wood Protection in Canada
2019 - IRG/WP 19-50360
Wood Preservation Canada is dedicated to promoting and supporting a stronger Canadian wood treating industry. In this presentation, wood protection in Canada will be reviewed through the lens of IRG’s five sections. Canada has 10% of the world’s forests, harvests 155 million cubic metres annually, and exports more than $17.5 billion CAD of wood products. Decay is the primary cause of wood biod...
M Tauvette, R Sterling
Chemical composition and performances of slow pyrolysis by-product from sugarcane bagasse for wood protection
2020 - IRG/WP 20-30752
Pyrolysis distillate or bio-oil, a by-product of biomasses’ slow pyrolysis in the char-making process, has been traditionally used as bio-pesticides by Asian farmers. Due to its large composition of bio-active chemicals, bio-oil obtained from various biomass has become of interest in many applications, including wood protectants. This study aims to characterize the chemical composition of bio-oi...
F D Boer, M-F Thévenon, J-M Commandre, M Fournier
Yellow birch fire-protection using polyelectrolytes complexes
2020 - IRG/WP 20-30755
Fire protection has been a major challenge in wood construction for many years. The demand for high-performance, environmentally friendly treatments respecting the physical and chemical characteristics of the material has been accentuated in recent years. Halogenated fire-retardant (FR) compounds were commonly used from the 70’s for their low-cost and high efficiency. They are able to form radic...
M Soula, F Samyn, S Duquesne, V Landry
From wood protection to health protection: larvicidal potential of formulations containing Sextonia rubra wood residues extract against Aedes aegypti mosquitoes
2020 - IRG/WP 20-10968
French Guiana is a French overseas territory almost entirely covered by Amazonian rainforest and characterized by its incredible biodiversity. Several woody species harboured by this tropical forest are exploited sustainably for timber industry. They are commercialized notably for carpentry and outdoor applications because of their remarkable natural durability. Among them, stand Dicorynia guianen...
E Cervil, N Amusant, E Wozniak, I Dusfour, J-B Duchemin, D Azam, M Coke, E Houël
Comprehensive protection of timber in seawater
2020 - IRG/WP 20-10970
The hazard of wood in seawater can be divided into two areas: Below the water level, shipworm (Teredo navalis) and gribble (Limnoria lignorum) can attack non-resistant or insufficiently protected wood; above the water level, there is a risk by wood-destroying fungi and, to a lesser extent, insects. In a national project funded by the Deutsche Bundesstiftung Umwelt (DBU, German Federal Environmenta...
E Melcher, J Müller, T Huckfeldt
Application of diverse hyperspectral imaging systems for evaluation of heritage objects
2020 - IRG/WP 20-10971
Advanced imaging techniques are able to non-invasively characterize, monitor and evaluate the impact of conservation treatments on cultural heritage (CH) objects. In this specific field, hyperspectral imaging (HI) allows non-destructive characterization of materials by identifying and characterizing colouring agents, binders and protective coatings as constituents of an object’s original constru...
J Sandak, A Sandak, L Legan, K Retko, M Kavčič, J Kosel, F Poohphajai, R Herrera Diaz, V Ponnuchamy, N Sajinčič, Č Tavzes, P Ropret
Extraction, identification and antifungal activity of polar extractives originated from various wood species
2020 - IRG/WP 20-20673
Extractives are non-cell wall small molecules present in wood and other lignocellulosic materials that can be removed by solvents. Although they represent a minor fraction in comparison with the structural cell wall components, they are an important source of functional groups or molecules with bioactivity or antioxidant properties, that could be used in medicine, cosmetic or wood preservation. T...
R Herrera, F Poohphajai, J Labidi, S Willför, A Sandak
Biofinish: A Functional Wood Surface Treatment based on Aureobasidium
2020 - IRG/WP 20-40903
Xyhlo Biofinish is a natural and environmentally friendly wood protection concept based on linseed oil impregnation and a fungal-based coating. It emerged in the late 1990s and has been developed over the past 15 years into an industrially applicable process in the Netherlands. The combination of linseed oil impregnation and a surface treatment with the living fungus Aureobasidium extends the serv...
S Rensink, M Sailer, S Roukens, J Gerber, H van der Mel, K Potgieter, J Spit, R Bulthuis, C Struck, M Bennink
The influence of chemical compounds on wood cell wall to surface cracks
2020 - IRG/WP 20-40908
Degradation due to cracking and dimensional changes caused by drying, have a significantly negative impact on the preservation and durability of wood. Therefore, the prevention of surface cracking, which tends to occur during the drying process, is vital. High temperature set drying is one of the most effective methods for preventing wood surface cracking. It begins with softening the wood at a hi...
R Suzuki, Y Mori, K Yoshihiro, K Yamashita, M Kiguchi