Your search resulted in 974 documents. Displaying 25 entries per page.
Chemical reactions involved in furfurylation of solid wood - An investigation by ATR-IR spectroscopy
2006 - IRG/WP 06-40347
…yet understood in detail. In the work presented here, the chemical reactions and their end products in the wood cell wall were studied using Attenuated Total Reflection InfraRed spectroscopy (ATR-IR) and knowledge from molecular modelling. Evidence of a polymeric structure of FA in the cell wall was found, but…
T Mark Venås, L Garbrecht Thygesen, S Barsberg
Chemical compounds from Eperua falcata and Eperua grandiflora heartwood and their biological activities against wood destroying fungus (Coriolus versicolor)
2005 - IRG/WP 05-30373
The chemistry analysis of the compounds present in dichloromethane and ethanolic fraction as well as bioassays enables to understand the durability differences of Eperua falcata and Eperua grandiflora. The principal distinction between these two species is the…
N Amusant, C Moretti, B Richard, E Prost, J M Nuzillard, M-F Thévenon
Specific gravity and moisture content of particleboards treated with various chemicals
2005 - IRG/WP 05-40310
…the effects of particleboard treated with various chemical substances on specific gravity and moisture content
The wood raw material used in the experiments were the mixture of coniferous wood [70%, Pinus brutia Ten., Pinus nigra Arn (Lamb.), Cedrus libani Ait.] and black poplar (30%, Populus nigra L.). In…
Ü C Yildiz, A A Var, H Kalaycioglu, S Yildiz
Laboratory and field evaluation of Plasmite Reticulation System using bifenthrin as a chemical barrier within wall cavities against subterranean termites.
2005 - IRG/WP 05-20307
…a simulated wall cavity at the required concentration. The chemical assay indicated that the amount of bifenthrin sampled at 5, 10, 15, 20, and 25m along the simulated reticulation system tested (30m) exceeded the manufacturer’s minimum recommendation of 0.0044%m/m. Results of the laboratory bioassay, using…
J R J French, B M Ahmed, J Thorpe, A Anderson
Correlation between changes in colour and chemical composition during photo-degradation of wood surfaces
2005 - IRG/WP 05-40301
…(yellowing) during photo degradation or weathering reflect chemical changes in wood. Therefore, the relationship between changes in chemical composition and CIELAB colour parameters is very important to characterize photodegradation of lignocellulosic surfaces. In this study, the changes in chemical composition and…
K K Pandey
Properties of hot oil treated wood and the possible chemical reactions between wood and soybean oil during heat treatment
2005 - IRG/WP 05-40304
…between soybean oil and palm oil and the possible chemical reactions between wood and soybean oil. Generally palm oil was slightly better than soybean oil in improving the moisture resistance properties of heat-treated wood. But soybean oil treated wood appeared to have better decay and mould resistance. The…
Jieying Wang, P A Cooper
Durability of Bamboos in India against termites and fungi and chemical treatments for its enhancement
2005 - IRG/WP 05-10553
Bamboo is a very important forest resource that benefits the life of people in a myriad ways including meeting the need for structural uses like posts, pole fencing, scaffoldings, house building, etc. Although it is one of the strongest structural material ava…
O K Remadevi, R Muthukrishnan, H C Nagaveni, R Sundararaj, G Vijayalakshmi
The effects of chemical modification on the physical properties of alder and spruce particleboards
2005 - IRG/WP 05-40300
…paper, it was aimed to improve some physical properties of chemically modified particleboard, made from spruce and alder species, spreading widely at Black sea region in Turkey. Spruce and alder chips were reacted with acetic, succinic, maleic and phthalic anhydrides at constantly heat for 3 hours then, hot pressed…
E Dizman, Ü C Yildiz, H Kalaycioglu, S Yildiz, A Temiz, E D Gezer
Chemical Analysis of Southern Pine Pole Stubs Thirty-Nine Months Following Treatment with Three Methylisothiocyanate-Based Fumigants
2004 - IRG/WP 04-30349
…fumigants, liquid metham sodium and granular dazomet, chemically decompose within a utility pole to release methylisothiocyanate. The third MITC-based fumigant consists of 97% methylisothiocyanate in a solid melt form. Laboratory and field studies conducted as part of the Cooperative Pole Research Program at…
R J Ziobro, J Fomenko, D J Herdman, J Guzzetta, T Pope
Economical analysis of the chemicals used on remediation copper, chromium and arsenic from out of service CCA-treated utility poles in Turkey
2004 - IRG/WP 04-50217
…samples.
The objective of this study is to determine the chemical that provides the maximum Cu, Cr and Ar removal from CCA treated wood as well as the cost effective one.
E D Gezer, D Toksoy, Ü C Yildiz
Effectiveness of the new chemical wood preservative Borosol 9? against a house longhorn beetle Hylotrupes bajulus
2004 - IRG/WP 04-30355
Chemical wood preservative Borosol 9, consisting of boric acid - alkanolamine complex, is a new wood preservative with proven efficacy against wood decay fungi. However, we were interested in its efficacy against larvae of house longhorn beetle…
G Babuder, M Petric, F Cadež, M Humar, F Pohleven
Chemical Remediation of Beech Condensates
2004 - IRG/WP 04-50221
In the present work, The beech wood condensate are subsequently separated from the aqueous phase. Experimental results reveal the electrostatic interaction between the oppositely charged wood extracts after oxidation and Ca(OH)2. The influence of parameters su…
M Irmouli, J P Haluk
Influence of the decay of spruce chips by the selected fungi on their chemical structure and the pulp properties
2004 - IRG/WP 04-10510
…pinicola, have been used. Mass losses and changes in chemical composition of chips depended on the fungus used and time of decay. The highest weight losses were caused by the fungi H.annosum and F.pinicola, the most of cellulose was removed due to F.pinicola, the most of lignin due to H.annosum, at which the…
R Solár, L Reinprecht, A Geffert, F Kacík
Chemical, physical and biological factors affecting wood decomposition in forest soils
2003 - IRG/WP 03-20281
…and forest types, which cover a wide range of soil chemical, physical, and biological properties. Wood stakes of two tree species are being used to contrast different lignin types present in wood: loblolly pine (Pinus taeda), and aspen (Populus tremuloides). The objectives of this study are: (1) to determine…
M Jurgensen, P Laks, D Reed, A Collins, D Page-Dumroese, D Crawford
Effects of soil physical and chemical characteristics on adsorption of leached CCA and ACQ preservative components
2003 - IRG/WP 03-50200
The objective of this study was to examine the effect of soil characteristics on adsorption of wood preservative components from CCA and ACQ preservative systems. Adsorption of leached CCA and ACQ preservative components in soils with different characteristics…
S Stefanovic, P A Cooper
Effect of fungal degradation on the chemical composition of acetylated beech wood
2003 - IRG/WP 03-40267
This study investigated the impact of fungal attack on the chemical composition of acetylated wood. Beech wood acetylated to different degrees was exposed to decay by the white-rot fungus Trametes versicolor under solid-state fermentation conditions. Laboratory soil-bed assays were also conducted to study the…
H Militz, Dong-won Son, L Gómez-Hernández, R Sierra-Alvarez
Fire resistance of Alder wood treated with some chemicals.
Part II. Effect of Other Chemicals on the Combustion Properties
2002 - IRG/WP 02-40235
…glycole (PEG-400) and their mixed solutions of chemicals in order to determine their combustion properties.
The results indicated that inorganic boron compounds with aqueous solutions were very effective as fire retardant and reduced burning of some vinyl monomers at some extent such as styrene and…
A Temiz, Ü C Yildiz
Soft rot decay in acetylated wood. Chemical and anatomical changes in decayed wood
2002 - IRG/WP 02-40231
…and no losses were detected at the highest WPG. Changes in chemical composition of acetylated beech wood at lower WPGs was measured. Slight changes in chemical composition of non-acetylated Scots pine wood were also observed and minor changes in acetylated wood at all WPGs; except in holocellulose. An intensive…
B Mohebby, H Militz
The Effect on Biological and Moisture Resistance of Epichlorohydrin Chemically Modified Wood
2002 - IRG/WP 02-40224
Southern pine solid wood and fiber were chemically modified with epichlorohydrin to help in understanding the role of moisture in the mechanism of biological effectiveness of chemically modified wood. The solid wood had weight gains from 11% to 34%, while the fiber had weight gains from 9% to 75%.…
R E Ibach, B-G Lee
Chemical Analysis of Southern Pine Pole Stubs Thirteen Months Following Treatment with Three Methylisothiocyanate Based Commercial Fumigants
2002 - IRG/WP 02-30294
…fumigants, liquid metham sodium and granular dazomet, chemically decompose within a utility pole to release methylisothiocyanate. The third MITC based fumigant consists of 97% methylisothiocyanate in a solid melt form. Laboratory and field studies conducted as part of the Cooperative Pole Research Program at…
R J Ziobro, T C Anderson, D J Herdman, J Guzzetta, T Pope
Treatability problems - Relationships between anatomy, chemical composition and treatability
2001 - IRG/WP 01-40213
…were selected and more fully evaluated for anatomical and chemical composition. No direct correlation was noted between CCA treatability and any of the anatomical characteristics evaluated in this study. Neither did a direct correlation between chemical composition and treatability seem to exist. The pit tori of all…
J E Winandy, F Green III, D Keefe
Remediation of environmental impacts related to inorganic wood preservative chemicals using in-situ geochemical fixation
2001 - IRG/WP 01-50166-17
Use of the inorganic wood preservative chemical chromated copper arsenate (CCA) has resulted in several documented cases of soil and ground water contamination at wood treatment plants due to spills or releases of the treatment chemical. The most significant impact from releases of CCA to the…
R M Thomasser, J V Rouse
Chemically modified tannin and tannin-copper complexes as preservatives for wood
2001 - IRG/WP 01-30271
The efficacy of Mimosa tannin, chemically modified tannin, and tannin-copper complexes as wood preservatives was studied. When the tannin-ammonia-CuCl2 solutions were impregnated into wood specimens in a one-step procedure, a large quantity of the tannin-copper complex was fixed in the…
H Yamaguchi
Copper naphthenate-treated Southern Pine pole stubs in field exposure. -Part 2: Chemical characterization of full size pole stubs 12 years after treatment
2000 - IRG/WP 00-30246
…and post-treatment steaming on the character and physio-chemical nature of copper naphthenate in hydrocarbon solvent treated pine in larger, pole diameter, pole stub-length samples. This work is the continuation of two projects that began almost a decade ago. Previous reports indicated that certain morphological…
H M Barnes, D P Kamdem, M H Freeman
Chemical analysis of TnBTO in lap-joints
1999 - IRG/WP 99-20173
This research was performed as part of the EU project FACT (contract SMT4-CT96-2135) on field tests out of ground contact and ageing methods. The results reported here are part of the work on the experimental lap-joint standard (ENV 12037). TNO investigated th…
A Voss, P Esser, W L D Suitela