-
Article
Rheological approach to the capillary penetration of coating into wood
The penetration of water- and solventborne binders into the capillaries of wood was studied as a function of the viscosity, surface tension, and capillary pressure according to the Washburn equation.
-
Article
Quantitative measurements of capillary coating penetration in relation to wood and coating properties
-
Article
Modification of wood with silicon compounds. inorganic silicon compounds and sol-gel systems: a review
This review describes the treatment of wood with various inorganic silicon compounds. Among these compounds silicofluorides represent one of the long-known classes of wood preservatives based on silicon. Data ...
-
Article
Modification of wood with silicon compounds. Treatment systems based on organic silicon compounds — a review
A wide variety of organo-silicon compounds has been described for application on wood. Some compounds such as organo-functional silanes which are mostly applied in combination with tetraalkoxysilanes (sol-gel ...
-
Article
Wood modification with alkoxysilanes
Wood was treated with three different alkoxysilanes which are able to undergo a sol–gel process: tetraethoxysilane (TEOS), methyl triethoxysilane (MTES) and propyl triethoxysilane (PTEO). Two types of treatmen...
-
Article
Comparison of chitosans with different molecular weights as possible wood preservatives
Fungi cause serious problems in wood utilization, and environmentally benign wood protection is required as an alternative to traditional chemicals. Chitosan has shown promising antimicrobial properties agains...
-
Article
Uptake of chitosan based impregnation solutions with varying viscosities in four different European wood species
The uptake of chitosan based impregnation solutions were tested on Scots pine (Pinus sylvestris L), Beech (Fagus sylvatica L.), Downy birch (Betula pubescens Ehrh.) and Norway spruce (Picea abies L. Karst.) in l...
-
Article
Wettability of waterborne coatings on chemically and thermally modified pine wood
Modification of wood can change its hydrophilic character. Consequently, modified wettability of wood can change its behavior with coating or gluing processes. The authors investigated the wettability of oil-h...
-
Article
Open AccessPhysical and mechanical properties of plywood produced with 1.3-dimethylol-4.5-dihydroxyethyleneurea (DMDHEU)-modified veneers of Betula sp. and Fagus sylvatica
The dimensional stability and some mechanical properties were tested in plywood produced with veneers modified with 1.3-dimethylol-4.5-dihydroxyethyleneurea (DMDHEU). The experimental design included Betula sp.
-
Article
Open AccessDetermination of fungal activity in modified wood by means of micro-calorimetry and determination of total esterase activity
Beech and pine wood blocks were treated with 1,3-dimethylol-4,5-dihydroxyethylen urea (DMDHEU) to increasing weight percent gains (WPG). The resistance of the treated specimens against Trametes versicolor and Con...
-
Article
Weathering of uncoated and coated wood treated with methylated 1,3-dimethylol-4,5-dihydroxyethyleneurea (mDMDHEU)
Scots pine (Pinus silvestris L.) sapwood panels were treated with a methylated 1,3-dimethylol-4,5-dihydroxyethyleneurea (mDMDHEU) causing weight gains of approx. 25% and were exposed to weathering for 18 mont...
-
Article
Open AccessUse of alkyl ketene dimer (AKD) for surface modification of particleboard chips
The study objective was to impart urea-formaldehyde (UF) bonded particleboards higher and longer-lasting hydrophobicity than that resulting from conventionally used paraffin. Alkyl ketene dimer (AKD) is a pa...
-
Article
Open AccessThe efficacy of commercial silicones against blue stain and mould fungi in wood
Scots pine (Pinus sylvestris L.) samples were vacuum pressure impregnated with quaternary ammonium (quat)-silicone micro-emulsion (<40 nm particle size), amino-silicone macro-emulsion (110 nm) and silicone ma...
-
Article
Open AccessProcedural influence on the properties of particleboards made from AKD modified chips
Wood chips were treated with alkyl ketene dimer (AKD) using three different processes to impart water resistance to particleboards. In the first process, AKD was blended with UF resin. Thickness swelling a...
-
Article
Open AccessPF-bonded particleboards from AKD-modified chips
Alkyl ketene dimer (AKD) was used as a hydrophobic agent for PF-bonded particleboards. In contrast to conventionally used paraffin, AKD can be covalently bonded to the chip surface by esterification with w...
-
Article
Open AccessThe calculation of EMC for the analysis of wood/water relations in Fagus sylvatica L. modified with 1,3-dimethylol-4,5-dihydroxyethyleneurea
Beech wood (Fagus sylvatica L.) was modified with 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU). The equilibrium moisture content (EMC) of wood modified with DMDHEU calculated on a dry modified basis is reduc...
-
Article
Open AccessDetection of chlorine-labelled chitosan in Scots pine by energy-dispersive X-ray spectroscopy
The aim of this study was to use energy-dispersive X-ray spectroscopy (EDX) to localize chitosan in the cell wall of chitosan-impregnated Scots pine. It was of interest to investigate the concentration of chit...
-
Article
Open AccessDynamic water vapour sorption properties of wood treated with glutaraldehyde
The dynamic water vapour sorption properties of Scots pine (Pinus sylvestris L.) wood samples were studied to investigate the modifying effects of glutaraldehyde. Pine sapwood was treated with solutions of glutar...
-
Article
Open AccessDistribution of blue stain in untreated and DMDHEU treated Scots pine sapwood panels after six years of outdoor weathering
Surface coating and bulk treatment of wood are two effective measures which can, individually or conjointly, protect exterior wood from deterioration. This paper reports on the blue stain attack in coated wood...
-
Article
Open AccessEffects of water glass and DMDHEU treatment on the colonisation of wood by Aureobasidium pullulans
Specimens of Scots pine sapwood (Pinus sylvestris) and beech (Fagus sylvatica) were treated with a sodium water glass solution and 1,3-dimethylol-4,5-dihydroxyethylene urea (DMDHEU).
