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Phytosanitary heat treatment of wood in a laboratory drying oven and, in a pilot-scale kiln using the house longhorn beetle (Hylotrupes bajulus) larvae as a model
2024 - IRG/WP 24-20722
International trade in wood products brings the risk of the movement of tree pests which can cause devasting ecosystem and economic damage. International phytosanitary guidelines were created to help countries that import wood products. Import requirements intend to minimize pest spreading. Thus, the ISPM 15 (International Standards for Phytosanitary Measures No. 15) which specifies the “Regulat...
B Rubio, C L’Hostis, M Montibus, I Paulmier, C Brunet, L Charron, J-P Gaussorgues, C Guiberteau, V Vlahakis, F-R de Cibon, I Le Bayon
Physical, durability and chemical characterization of Gmelina arborea (Roxb.) wood treated with lactic acid
2024 - IRG/WP 24-30803
The increase in demand for durable wood has drawn attention to the use of fast-grown plantation species across the globe. Chemical modification was used to treat Gmelina arborea wood with lactic acid for property enhancement. The treated samples were obtained from two different ages of 15 and 10 years and sawn into (20 x 20 x 60) mm and (20 x 20 x 20) mm for physical, durability and chemical chara...
T O Akinwamide, J M Owoyemib, E A Iyiolac
Citric acid and sorbitol treatment: A comparative study of Canadian and Norwegian species
2024 - IRG/WP 24-30806
Dimensional instability can reduce the competitiveness of wood in exterior applications such as cladding and decking. The objective of this work was to evaluate the dimensional stability of permeable and refractory softwoods from Europe and North America modified via a sorbitol and citric acid treatment. White spruce and Norwegian spruce, refractory species, and jack pine and Scots pine, relativel...
D Schorr, Erik Larnøy, R Stirling, G Boivin
A novel treatment for increasing UV stabuility of wood based on citric acid and urea
2024 - IRG/WP 24-30811
Wood, a fundamental material in the Built Environment, faces challenges related to durability and weathering, notably UV degradation leading to colour changes. This study explored a novel treatment method utilising citric acid and urea to enhance the UV stability of wood. The reaction between these compounds forms fluorescent species and insoluble nanoparticles upon thermal treatment. Two treatmen...
S Jué, A Scharf, C-F Lin, R Moutou Pitti, D Sandberg, D Jones
Leaching and chemical redistribution of CCA components in refractory heartwood of E. nitens
2024 - IRG/WP 24-41011
Chromated Copper Arsenate (CCA) is a wood preservative widely used to protect against fungal and insect attack. The fixation mechanism of CCA involves complex chemical reactions, including the reduction of chromium (VI) to chromium (III) and the formation of insoluble complexes. Despite fixation efforts, a portion of CCA components tends to leach from treated wood, influenced by factors like wood ...
J R Vargas, L Yermán, K C Wood, T Singh
Phytosanitary treatment of roundwood for oversea shipping - on the suitability of dry heat treatment as alternative to climate-change effective fumigation
2024 - IRG/WP 24-50394
The transcontinental trade of roundwood requires thorough phytosanitary treatment to protect native flora and fauna against foreign pests. This is generally done by fumigating shipping containers packed with roundwood with sulfuryl fluoride, a potent greenhouse gas. After treatment, the gas is released into the atmosphere, causing massive emissions. Since 2017, the usage of sulfuryl fluoride in th...
G Weber, L Schrader, J Trautner