Your search resulted in 497 documents. Displaying 25 entries per page.
Citric acid and sorbitol treatment: A comparative study of Canadian and Norwegian species
2024 - IRG/WP 24-30806
…and North America modified via a sorbitol and citric acid treatment. White spruce and Norwegian spruce, refractory species, and jack pine and Scots pine, relatively more permeable species, were treated with sorbitol and citric acid. Refractory species showed similar results with a low mass gain and low…
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
…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 treatment approaches, impregnation and surface coating, were employed, demonstrating…
S Jué, A Scharf, C-F Lin, R Moutou Pitti, D Sandberg, D Jones
Comparative performance of several ammoniacal copper preservative systems
1997 - IRG/WP 97-30151
…systems tested, copper/tribromophenol, copper/naphthenic acid, copper/DDAC, and copper/propiconizole were found to be superior against copper tolerant fungi in comparison to the other systems tested after three years of field ground-contact exposure. The performance of copper/benzoic acid was mediocre.…
D D Nicholas, T Schultz
Stake test with ammoniacal copper in combination with different agents started in 1962
1997 - IRG/WP 97-30130
…chromium, arsenic, pentachlorophenol, boron, salicylic acid, benzoic acid, sorbic acid, pyridine and tannin. Different concentrations of the copper component were used as well as the added agents. For each concentration and test site, ten stakes of Pinus sylvestris L. sapwood were treated. The stakes were set out…
B Häger, Ö Bergman
A novel cellulose-binding domain from the brown-rot fungus Gloeophyllum trabeum
2023 - IRG/WP 23-11019
…brown-rot fungus Gloeophyllum trabeum. The deduced amino acid sequence of this novel CBD (GtCBD) showed no homology to any known CBD. The three-dimensional structure model of GtCBD predicted from the amino acid sequence suggested the structure consisted of two α-helices, which was quite different from that of…
Y Kojima, N Sunagawa, M Aoki, M Wada, K Igarashi, M Yoshida
The cellulose binding mechanism of a novel cellulose binding domain from the brown-rot fungus Gloeophyllum trabeum
2023 - IRG/WP 23-11021
…binding ability to native celluloses, although the amino acid sequence of this domain shows no homology to any known CBDs. Therefore, we hypothesized that this novel CBD from G. trabeum (GtCBD) has a different mechanism of cellulose binding from CBM1. To obtain the knowledge of cellulose binding mechanism in GtCBD,…
M Aoki, Y Kojima, M Wada, M Yoshida
Japanese traditional wooden building construction project in Bangkok - Part 2 Verification of termite control method
2023 - IRG/WP 23-11022
…of heartwood (except stainless steel mesh) and boric acid-treated specimens (without weathering) were observed to be damaged.
4. Boric acid-treated (with weathering operation) and untreated specimens were severely damaged.
H Ishiyama, S Murakami
Sensitivity of copper indicators for detecting preservative penetration
2023 - IRG/WP 23-20701
…S (CAS), 1-(2-pyridylazo)-2-naphthol (PAN), and rubeanic acid (RA) are the three copper indicators currently used by the timber industry to assess preservative penetration. Although only the American Wood Protection Association (AWPA) standards specify indicator sensitivity, it is unclear how those limits were…
T Yi, J Norton, S Meldrum, J J Morrell
Improvement of durability of Scots pine against termites by impregnation with citric acid and glycerol followed by in situ polyesterification
2023 - IRG/WP 23-30777
…samples were impregnated with solution containing citric acid (CA) and glycerol (Gly) followed by heating 140 °C according to already described procedure (L'hostis et al. 2018). The resulting modified woods were then used to evaluate the effect of chemical modification on the durability against termites. Two kinds…
M Mubarok, J Damay, E Masson, E Fredon, Y S Hadi, I W Darmawan, P Gerardin
Performance of treated Malaysian semantang bamboo (Gigantochloa scortechinii) - field and laboratory durability evaluation
2023 - IRG/WP 23-30788
…treated using 10% copper chrome boron (CCB) and 10% boric acid, air-dried and exposed in the field for 1 year. Bamboo stripe was exposed to two white-rot fungi, Trametes versicolor, Pycnoporus sanguineus and one mold species, Aspergillus brasiliensis. Degradation was evaluated and compared with untreated bamboo and…
S Lipeh, T Khadiran, Z Jalaludin, M K Anwar U
Biological durability and wood-water interactions of sorbitol and citric acid modified wood – Effects on the expected service life
2023 - IRG/WP 23-40960
A high level of research activities on sorbitol and citric acid (SorCA) modified wood has been recognized in Europe over the last few years. As this treatment is close to entering an industrial-scale production, it is of interest to investigate how such treated wood performs upon long-term outdoor exposure. Hence, in…
K Kurkowiak, L Emmerich, H Militz
Investigating the fire properties of a composite material made of MDF-residues, citric acid and sorbitol
2023 - IRG/WP 23-40969
…new composite material has been developed made from citric acid, sorbitol, water and waste MDF. Not only will there be a material reuse option for waste MDF but due to the small particle size used, other categories of waste wood could be used for the production as well. The properties of the composite predestine a…
P T Lewandowski, W Perdoch, E Larnoy, H Militz
The impact of pre-drying on treatment level variations of esterified solid wood analysed by X-ray densitometry
2023 - IRG/WP 23-40977
…to biodeterioration. Esterification of wood by citric acid and sorbitol can show differences in density caused by uneven chemical distribution during the curing phase and can be detected by x-ray densitometry. This study used density profiling to investigate the influence of pre-drying on treatment levels in…
A Treu, S O Amiandamhem, E Larnoy
Optimization of furfurylic alcohol/tannin ratio to improve the performance of biosourced thermoset resins for wood protection
2023 - IRG/WP 23-40994
…tannin and furfuryl alcohol (FA) in the presence of maleic acid as catalyst. Tannins were used not only as cross-linking agents, but also as co-monomers to improve wood durability, while reducing the amount of FA used. Different aqueous formulations were prepared containing decreasing amount of FA (from 45.45% to 0%)…
E Azadeh, A Pizzi, P Gérardin, C Gérardin-Charbonnier
In Vitro Growth of the Basidiomycetes Physisporinus vitreus strains in various conditions in comparison with some white rot fungi
2022 - IRG/WP 22-10987
…and determination of the effect of various ions on oxalic acid secretion by these white rot fungi. In the project, it is also aimed to run fungal decay tests to determine nano and soluble-Cu tolerance of the test fungi and Cu depletion by the fungi. A myco-remediation process of nano and soluble-Cu-treated wood by…
E E Soytürk, S N Kartal
Properties of Iron (II) Sulphate treated Norway Spruce
2022 - IRG/WP 22-30765
…In this study, we investigated the influence of boric acid and quarterly ammonium in combination with a solution based on an iron (II)sulphate-based solution. We treated spruce samples with different concentrations of iron(II)sulphate and biocides. After treatment, decay and water performance tests were…
B Lesar, M Humar, M Škamlec
Effects of Borax and Boric Acid as Fire Retardants on the Resistance of Pterygota macrocarpa Wood to Fire Tests
2022 - IRG/WP 22-30770
…was carried out to assess the effect of Borax and Boric acid on the fire-retardant properties of P. macrocarpa wood. Wood samples of dimension 200 x 95 x 10 mm were obtained from the harvested tree of P. macrocarpa across and along at 25%, 50% and 75% of the total length. The result revealed that the control…
J M Owoyemi, O Apogbona, T O Akinwamide
Acetylation of pine wood in Uruguay
2022 - IRG/WP 22-40927
…by vacuum-pressure with acetic anhydride-acetic acid, and later cured at 120 °C for 1 or 2.5 hours. To determine the chemical reaction between wood and the reactives, Fourier transform infrared (FTIR) analysis was carried out. Finally, dimensional stability was evaluated. Pinus taeda presented the highest…
C M Ibáñez, L Castillo
Durability against fungal decay of sorbitol and citric acid (SorCA) modified wood
2022 - IRG/WP 22-40928
…via in-situ esterification of sorbitol and citric acid (SorCA) has been reported to result in a significant increase of the biological durability, specifically an increased resistance against wood-destroying basidiomycetes. However, none of these studies have investigated the resistance of SorCA treated wood…
K Kurkowiak, L Emmerich, H Militz
Environmentally Friendly Wood Modification based on Tannin-Furfuryl alcohol - Effect on stabilisation, mechanical properties and decay durability
2022 - IRG/WP 22-40929
…on the wood furfurylation. Three kinds of dicarboxylic acids, adipic acid, succinic acid, and tartaric acid, as well as glyoxal as a comparing agent, were used to catalyse the polymerisation of furanic or tannin-furanic solutions during wood modification. Impregnation of furanic or tannin-furanic solution at a…
M Mubarok, E Azadeh, F O Akong, S Dumarçay, A Pizzi, C Charbonnier-Gérardin, P Gérardin
CIOL®-protection of wood – an update
2022 - IRG/WP 22-40932
…consumer price. A mixture of water, sorbitol and citric acid has the potential to do just this by esterification of wood. Esterified wood alters the wood properties in several ways. Besides an increased resistance against decay fungi, the treated wood material is dimensionally stable and shows changed sorption…
A Treu, E Larnøy, J Biørnstad
Biological assessment of bio-based phase change materials in wood for construction applications
2022 - IRG/WP 22-40935
…wood used to incorporate single or multicomponent fatty acid mixtures as bio-based phase change materials (BPCMs). The sapwood samples were impregnated with capric acid (CA), methyl palmitate (MP), lauryl alcohol (LA) and a mixture of coconut oil fatty acids and linoleic acid (CoFA-LA). The samples were tested…
S Palanti, A Temiz, G Köse Demirel, G Hekimoğlu, A Sari, M Nazari, J Gao, M Jebrane, T Schnabel, N Terziev
Biocomposites based on PVA, cellulose nanofibrils and tannic acid
2022 - IRG/WP 22-40957
…and with the addition of the biologically active tannic acid (TA) were prepared. The influence of different additions of CNF and TA in the polymer matrix PVA on the mechanical properties, improvement of hydrophobicity of the prepared films was studied. In all cases, the addition of CNF and TA improved the value of…
U Osolnik, V Vek, I Poljanšek, Poven
Novel bio-based tannin/furfurylic alcohol thermosets: application to wood preservation
2022 - IRG/WP 22-40959
…(1:1 and 2:1) and with or without catalyst (maleic acid), with various concentrations in water (between 10 and 50%), have been impregnated in wood. Wood samples modified with tannin /furfuryl alcohol solution presented improved decay durability especially against Coniophora puteana whatever the concentration…
C Gérardin-Charbonnier, E Azadeh, A Pizzi, P Gerardin
Treatability of South African-grown Eucalyptus grandis with water-borne copper azole and disodium octaborate tetrahydrate wood preservatives
2021 - IRG/WP 21-40920
…level of 4.61 kg/m3 with CuAz and 7.98 kg/m3 boric acid equivalent (b.a.e) with DOT. The highest mean retentions obtained in the heartwood were 2.10 kg/m3 and 3.52 kg/m3 b.a.e for CuAz and DOT respectively. The findings revealed high sapwood and limited heartwood permeabilities of E. grandis, thus agreeing…
A A Alade, Z Naghizadeh, C B Wessels