Your search resulted in 91 documents. Displaying 25 entries per page.
Dynamic mechanical analysis of viscoelastic properties of heat treated glycerol-impregnation poplar wood
2016 - IRG/WP 16-40732
The viscoelastic properties of glycerol-impregnated poplar wood after heat treatments at various temperatures were examined by dynamic-mechanical analysis. The spectra of storage modulus (E’) and loss tangent (tgδ) in the frequency at 10 Hz were measured at the temperature range from -100 to 300℃. Compared to no peak in E’ spectra and two relaxation processes in tanδ spectra of...
Li Yan
Colorant Treatments to Enhance the Weathering Resistance of Western Red cedar
2016 - IRG/WP 16-40737
Western redcedar is renowned for its decay resistance, but, like most wood products, it requires frequent maintenance in many exterior applications to maintain its appearance. To provide adequate long-term performance in exterior applications, it must be protected against light, water, and disfiguring fungal growth. Colorant treatments, with and without preservatives, were investigated for their a...
R Stirling, V Landry
Effect of insitu polymerization on practical properties of heat treated wood
2016 - IRG/WP 16-40763
This research was conducted to investigate the effect of combined modification; heat treatment and impregnation with styrene monomer on physical and mechanical properties of poplar wood (Populus deltoides). Test samples were grouped in six levels of control, wood polymer made from styrene, heat treatment at 170 ºC and 200ºC and combined modification; first hat treated at 170 ºC and 200ºC and t...
M Ghorbani, M Mohseni Shaktaei
Black-stain Resistant Acrylic Latexes for Wood Coatings Applications
2017 - IRG/WP 17-40786
Translucent coatings on wood in exterior applications often fail due to photodegradation and colonization by black-stain fungi and require frequent refinishing. This limits competitiveness with alternative materials. In this project, it was hypothesized that an effective dispersion of inorganic nanoparticles will provide a translucent coating with long-term resistance to black-stain fungi. Functio...
G Boivin, A M Ritcey, P I Morris, V Landry
Bio-preservative properties of technical lignins from South African pulp mills: An investigation towards a conceptualized development of natural compound-based wood preservatives
2018 - IRG/WP 18-30724
The depletion of naturally durable timber and the risk posed by some of the conventional wood preservatives to human health and the environment continue to drive research efforts towards developing new formulations that are benign. Furthermore, the global concept of environmental sustainability aims at optimal use of resources and to comprehensively include conversion of waste to value added produ...
A Alade, L Tyhoda, M Meincken
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
Moisture sorption behaviour of poplar and thermally modified poplar using dynamic vapour sorption (DVS)
2022 - IRG/WP 22-40947
The moisture sorption behaviour of wood has a critical impact on service life. In Europe, softwood is mostly used to manufacture engineered wood products such as cross-laminated timber (CLT) or glue-laminated timber (GLT or glulam). Yet fast-growing and widespread tree species such as hybrid poplar with or without modification, have potential to meet the increasing demand. This study shows the moi...
X Jiang, J Van den Bulcke, L De Boever, M Minsart, A Mignon, J Van Acker
Evaluation of the efficacy of silver nanoparticles and chitosan oligomer composites as poplar wood protective treatments against termites
2023 - IRG/WP 23-40963
Populus × euramericana ‘I-214’ (poplar) is a fast-growing species widely distributed throughout the world, and in the Castile-Leon region of Spain it accounts for more than 50% of all plantations. Its wood is becoming increasingly appreciated, yet its low durability against xylophagous agents —termites being one of the most aggressive and destructive in warm climates— continues to be a li...
E Spavento, M T Troya, M Casado-Sanz, J Martín-Gil, P Matín-Ramos, L Robertson, L Acuña-Rello
Failure characteristics of thermally modified poplar wood subjected to mechanical tests
2023 - IRG/WP 23-40983
Poplar (Populus spp.) are among the fastest growing timber species and have been widely planted for use in plywood, composites, pallets, furniture components and paper production. However, the low density of the wood limits many structural applications and the wood has little resistance to biodegradation. Thermal modification represents one approach to improving durability by changing the moistur...
E Bari, M Ghorbanian Far, N Moradi, J J Morrell, G Daniel, B Mohebby, R Hosseinpourpia, M Humar
Fungicidal properties of black liquor from the waste MDF board digestion in terms of wood protection
2023 - IRG/WP 23-50379
The aim of the work was to determine the fungicidal properties of black liquor as a product of the chemical digestion of waste MDF board. The resistance of wood treated with black liquor from MDF waste pulping process was compared with the resistance of wood treated with black liquor from the pulping process of a by-product from agricultural production. The control material consisted of non-treate...
B Mazela, W Perdoch, A Szulc, I Sieminska
Service life of poplar, a low durability hardwood
2024 - IRG/WP 24-41007
Hybrid poplar is the most common plantation hardwood of the temperate climate zone and is complementary to natural stands of aspen with mainly plantations in Europe and China. Poplar wood has been considered as a valid alternative for many of the construction applications of softwoods especially when considering engineered wood products.
The natural durability of hybrid poplar is low and for a ra...
J Van Acker, X Jiang, L De Ligne, J van den Bulcke
The durability and mechanical properties of 40 years old Black locust poles
2024 - IRG/WP 24-11042
This study investigates the durability and mechanical properties of 40-year-old black locust (Robinia pseudoacacia) poles harvested from a vineyard in Slovenia. Wood from these poles was compared to recently harvested black locust wood to determine possible reuse options. Visual inspection, hyperspectral imaging, and laboratory tests were conducted to assess decay, density, mechanical properties, ...
M Humar, J Malik, J Levanic, D Krzisnik, E Kerzic, B Lesar
Microbial symbionts in the shipworm gut: a new finding resolving a century old mystery explaining how shipworms digest lignin
2025 - IRG/WP 25-11061
Shipworms, historically known for their destruction of wooden ships and coastal structures, also play a key role in carbon and nutrient cycling in aquatic ecosystems. Despite extensive research, the exact mechanisms underlying their ability to digest wood, and particularly how they digest lignin, have remained elusive. A better understanding of the way that they attack and digest wood will potenti...
B Goodell, J Chambers, D V Ward, C Murphy, E Black, L B K Mancilio, G Perez-Gonzalez, J R Shipway
The impact of common fire retardancy salts and minerals on further properties of wood
2025 - IRG/WP 25-30821
Wood has become an increasingly important construction material. To ensure fire safety, fire retardants are widely applied. Recent research focuses on environmentally friendly fire retardants with strong fixation. Phosphate-based salts like diammonium hydrogen phosphate show high fire protection potential but are highly leachable due to their good water solubility. As a newer trend mineralisation ...
T Franke, T Volkmer
Properties of plasma etched super black wood
2025 - IRG/WP 25-30825
Super-black materials have very low reflectivity due to structural absorption of light. They are attracting considerable scientific and industrial attention because of their important applications in many fields including astronomy, photovoltaics, and optical science, amongst others. We have developed the first super-black material from wood by etching transverse basswood (Tilia americana L.) surf...
K J Cheng, X Xu, V A Hernandez, P D Evans
Plasma Modification of Basswood Creates Super-Black Wood
2025 - IRG/WP 25-30826
A super-black wood with low reflectivity in the UV/Vis range is created by plasma modifying transverse basswood surfaces. Here the super-black wood is characterised, the process used to make it is described and its possible practical uses are discussed. Wood samples are exposed to oxygen glow-discharge plasma. Transverse surfaces exposed to high-energy plasma have a deep-black velvety appearance. ...
K J Cheng, D Feng, M Turner, L Schmidt, P D Evans