Your search resulted in 393 documents. Displaying 25 entries per page.
Multiscale modification on water resistance and dimensional stability of Populus cathayana by alkali lignin combined with heat treatment
2018 - IRG/WP 18-40826
…Properties of leachability, moisture adsorption and water absorption, contact angle, tangential and volumetric swelling for the control and modified samples were investigated. Moreover, the morphological and chemical alterations were analyzed by scanning electron microscopy (SEM), confocal laser scanning microscopy…
H Zhou, J Li, E Ma
Monitoring of wood biodeterioration by infrared spectroscopy
2017 - IRG/WP 17-20607
…through non-destructive techniques such as medium infrared spectroscopy. In the spectrum, within the medium infrared region, are located the absorption bands useful for the identification of functional groups. This study evaluated the monitoring of wood biodeterioration of marupá and eucalipto during 12 weeks of…
E Meneses Oliveira, A Florian da Costa, J W Batista Braga
Permeability of Eucalyptus wood improved by microwave treatment
2017 - IRG/WP 17-40773
…permeability timber with functional materials, such as flame retardant, preservatives and resins. Microwave (MW) treatment can increase the permeability of wood both in transverse and longitudinal directions. The effects of MW radiation time, MW radiation power and initial moisture content (MC) on permeability…
Xia He, Xianjun Li, Jie Xie, Xingyang Xiong
Multilayer hot-press drying and chemical modifying of poplar wood with urea-formaldehyde prepolymer
2011 - IRG/WP 10-40539
…of wood. Characteristics of Fourier Transform Infrared Spectroscopy (FTIR) and X-ray diffraction (XRD) for modifying were studied using FTIR spectrometer and XRD instrument. The intensity of hydroxyl absorption peak in the infrared absorption spectrogram decreased significantly, and that of carbonyl decreased…
Guofeng Wu, Yifei Jiang, Sheng Yao, Junwen
Classification of wood materials using Fourier Transform Near Infrared Spectroscopy and multivariate analysis
2011 - IRG/WP 11-20471
…by the combination of Fourier Transform-Near Infrared Spectroscopy (FT-NIRS) and Multivariate Analysis (MVA). This technique is non-destructive, quick, easy to use and can be portable. The calibration models for different heavy metals are set up using principal component analysis (PCA) to classify species of…
M A Bouslamti, M A Irle, C Belloncle, V Salvador, S Hulot, B Caron, E M Qannan
Stained wood: The identification of natural dyes and mordants in wooden works of art
2010 - IRG/WP 10-20434
…(HPLC) with diode array detection or UV/VIS – Spectroscopy (UV/VIS). HPLC works rather precisely but requires a small sample, whereas UV/VIS is non-destructive method applicable in situ. However, thick layers of lacquers over the stained wood surface and strong decolorization hinder detection. The…
A Unger, W Unger
Photostabilization of Wood with Higher Molecular Weight UV Absorbers
2010 - IRG/WP 10-30524
…absorbers to photostabilize wood was then examined. FTIR-spectroscopy confirmed that HEPBP reacted with phthalic anhydride to create a polyester that preserved the UV-absorbing benzophenone group. There was less evidence that the polyester was formed when HEPBP was reacted with maleic or succinic anhydride.…
P D Evans, M J Chowdhury
Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termites attack
2010 - IRG/WP 10-30526
…to a laboratory leaching procedure. Boron analysis using atomic absorption spectrometer showed a significant reduction in boron leachability for the samples treated with both concentrations of PVA when compared to the stand-alone boron treatment leading to boron retentions capable to prevent wood biological…
A Mohareb, M F Thévenon, E Wozniak, P Gérardin
Effects of new fixative additives on leachability of boron wood preservatives
2009 - IRG/WP 09-30507
…procedure (ENV 1250-2). Results of boron analysis using atomic absorption spectrometer (AAS) for the wood specimens and the leachates showed a significant reduction in boron leachability for the samples treated with both tested fixation additives when compared to the stand-alone boron-treated specimens. For boron…
A Mohareb, J Henry, E Wozniak, P Gérardin
Leaching of CCA from Paraserianthus falcataria panels exposed to field conditions at Krishnapatnam harbour, Andhra Pradesh
2006 - IRG/WP 06-50241
…panels after 6, 12, 24 and 36 months of exposure using Atomic Absorption spectrophotometer (AAS). The metal loss was found slightly higher in panels treated to lower loadings (16 Kg/m3) as compared to those treated to higher loadings (32 Kg/m3) at initial stages for a period of 6 months. The total metal loss in…
B Tarakanadha, K S Rao
A laboratory study on effect of coating materials on leaching of copper from CCA treated wood
2001 - IRG/WP 01-50176
…concentration of copper in the leachate was analysed by atomic absorption spectrophotometry. The results showed that coating materials could reduced the concentration of copper in leaching water. In addition, the resistance of treated wood against destroying fungi was studied. After painted with coating materials,…
A Veenin, T Veenin
UV-microspectrophotometry of lignin and accessory compounds in wood cell walls of conifers
1999 - IRG/WP 99-20171
…of guiacylpropane units which exhibit a characteristic UV absorption maximum at 280 nm. Therefore, in addition, ultrathin sections were exclusively scanned with this characteristic wavelength. Four examples of application are presented: (1) l the lignin contents of the different cell wall regions of fresh spruce…
G Kleist, G Koch, J Bauch
Towards eco-friendly fire retardant of wood - exploring fungal biomineralization
2025 - IRG/WP 25-11052
…represents a safety threat. Commonly used fire and flame retardants are often environmentally unfriendly, while safety cladding is labour intensive and covers the wood, decreasing the aesthetic appeal of the building. Mineralisation of wood with calcium carbonate has been shown to be a promising, eco-friendly…
K Butina Ogorelec, A Gubenšek, A Sandak
Predicting weather resistance of Recoated Outdoor Wood by Near Infrared Diffuse Reflectance Spectroscopy
2025 - IRG/WP 25-20757
…We investigated that possibility of using near infrared spectroscopy to estimate repair condition and weather resistance of recoated outdoor wood. The specimens used for recoating was planed Scots pine (Pinus sylvestris) weathered vertically for eight years in Miyazaki in Japan. The specimens were recoated with…
M Murai, M Itani, K Isoda
The non-energy utilization of low-quality wood from the invasive species Prunus serotina
2025 - IRG/WP 25-30814
…properties were examined, such as the wetting angle, absorption of water vapor from humid air, and the wood's resistance to fungal infection. The modified raw material was then used to produce prototype thermal insulation materials, for which thermal characteristics were determined. Based on the conducted…
W Perdoch, P Kołwzan
Furfurylation of wood with white pocket rot caused by Porodaedalea chrysoloma
2025 - IRG/WP 25-30819
…surface increased. Moreover, Fourier-transformed infrared spectroscopy showed that furfuryl alcohol was impregnated into the white pocket rot samples and polymerised in situ within the cell walls. In addition, chemical modification with maleic anhydride as a catalyst and furfurylation produced white pocket rot…
Y Mori, Yamashita, Y Ota, M Kiguchi
The impact of common fire retardancy salts and minerals on further properties of wood
2025 - IRG/WP 25-30821
…colour analysis. Additionally, Fourier-transform infrared spectroscopy was used to investigate the potential of the minerals to protect the wood structural elements due to UV irradiation. Natural weathering was carried out over 16 months on the outdoor test field in Biel/Bienne (Switzerland). Specimens were analysed…
T Franke, T Volkmer
Unlocking the Potential of Dairy Coproducts in Wood Modification
2025 - IRG/WP 25-30822
…dairy-derived products. The results indicate a solution absorption exceeding 200%, ensuring deep penetration into the wood structure. After curing, the treated samples exhibited significant weight gain, which persists after water leaching. The cell wall bulking remained below 3% across all treatments, contributing…
A Keralta, J Karthäuser, J Winninger, J Chamberland, M-J Dumont, V Landry, H Militz
Properties of plasma etched super black wood
2025 - IRG/WP 25-30825
…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…
K J Cheng, X Xu, V A Hernandez, P D Evans
Plasma Modification of Basswood Creates Super-Black Wood
2025 - IRG/WP 25-30826
…wood are examined using SEM, X-ray micro-CT and FTIR spectroscopy, respectively. Transverse basswood samples modified with high-energy plasma have reflectivity averaging 0.68% (300–700 nm). The super-black colour of plasma-modified wood is retained when it is coated with gold/vanadium alloy indicating…
K J Cheng, D Feng, M Turner, L Schmidt, P D Evans
Enhancing strength, fire and biological resistance of wood through structural and chemical modification
2025 - IRG/WP 25-30831
…inherent limitations such as susceptibility to biological, flame and mechanical damages, which can significantly shorten its lifespan, especially in harsh environments. Thus, enhancing the properties of wood to improve its durability, strength, and resistance to environmental factors has been a critical area of…
R Abouzeid, M S Koo, Q Wu
Experimental characterizing of liquid water uptake and release – key to understand moisture-induced decay risk analysis
2025 - IRG/WP 25-41020
…face to allow either longitudinal, radial, or tangential absorption. Wetting and drying of the specimens were recorded over a period of two weeks each. Results show that there are large differences between the main anatomical directions and smaller differences between the sample dimensions. With the gained data a…
M Nopens, J T Benthien, J Trautner, C Brischke
Optimising properties of citric acid-sorbitol bonded particleboards with added ammonium dihydrogen phosphate as fire retardant
2025 - IRG/WP 25-41033
…bond, MOR/MOE in bending, as well as exposure to small flame impingement and elevated temperatures in hot plate test. An improvement in properties was noticeable with increasing adhesive content, while particle size did not significantly influence the results. The addition of ADP had a negative effect on…
L Kopač, S Medved, B Lesar, M Humar
Quantitative Prediction of Latent Deterioration in Wood Coatings Using Mid-Infrared Spectroscopy and Machine Learning
2025 - IRG/WP 25-41038
…total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy with partial least squares (PLS) regression to quantitatively predict the deterioration of wood coatings subjected to accelerated weathering using a xenon lamp method. The study further explores the impact of cellulose nanofibre (CNF) as an…
Y Teramoto
Investigation of the Correlation between Blue-Light and Transparent Wood and Its Impact on Eye cells
2025 - IRG/WP 25-41042
…performance, with residual lignin enhancing blue light absorption. Cell viability assays revealed that transparent wood provided superior blue light protection, with the 36-hour treated samples achieving the highest cell survival rates. This study highlights the potential of transparent wood as a functional…
J-Y Jiang, C W Lin, P-Y Kuo