Effect of short-chain silicones bearing different functional groups on the resistance of pine (Pinus sylvestris L.) and beech (Fagus sylvatica L.) against decay fungi
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Malte Pries
Abstract
Blocks of pine sapwood and beech wood were treated with water-based emulsions containing short-chain silicones with different α-ω-bonded functional groups, such as diamino, carboxyl and carbonyl, betain, and epoxy groups. The weight percent gain upon treatment of the pine wood specimens was relatively high (10%–20%), but their cross-sectional bulking was low (1%–2.5%). Thus, the anti-shrink efficiency (ASE) due to the treatment was also low. The first water-submersion tests revealed some hydrophobation of the treated wood. A second submersion test, however, revealed successful hydrophobation only for betain-functionalised material. The carboxylated silicone even increased the speed of water uptake as compared to the controls. The samples treated with silicones bearing epoxy, diamino, and carboxy functionalities showed a distinct reduction in mass loss compared to the control samples after 16 weeks of incubation with the fungi Coniophora puteana and Trametes versicolor according to EN 113 and CEN/TS 15083-1, whereas the betain-functionalised silicone did not enhance fungal resistance. All silicones tested lowered the mass loss in a soft rot test according to ENv 807. The mode of action of the silicones is discussed.
The authors would like to acknowledge the financial and technical support of Momentive Performance Materials GmbH, Leverkusen, Germany.
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Articles in the same Issue
- Masthead
- Masthead
- Original Articles
- A new lignan glycoside and phenolics from the branch wood of Pinus banksiana Lambert
- Fragmentation mechanism of the phenylcoumaran-type lignin model compound by ToF-SIMS
- Enzymatic hydrolysis of loblolly pine: effects of cellulose crystallinity and delignification
- Aggregation and adsorption behaviors of carboxymethylated lignin (CML) in aqueous solution
- The adsorption and dispersing mechanisms of sodium lignosulfonate on Al2O3 particles in aqueous solution
- Moisture-dependent orthotropic tension-compression asymmetry of wood
- Time-domain NMR study of the drying of hemicellulose extracted aspen (Populus tremuloides Michx.)
- Substitution of phenol in phenol-formaldehyde (PF) resins by wood tar for plywood adhesives
- Modification of Pinus sylvestris L. wood with quat- and amino-silicones of different chain lengths
- Reducing copper leaching from treated wood by sol-gel derived TiO2 and SiO2 depositions
- Measuring the thermal properties of green wood by the transient plane source (TPS) technique
- Effect of short-chain silicones bearing different functional groups on the resistance of pine (Pinus sylvestris L.) and beech (Fagus sylvatica L.) against decay fungi
- Antimicrobial surfaces of quaternized poly[(2-dimethyl amino)ethyl methacrylate] grafted on wood via ARGET ATRP
- Cloning and characterization of a 2,3-oxidosqualene cyclase from Eleutherococcus trifoliatus
- Phylogenetic analysis of the genus Fusarium and their antifungal activity against wood-decay and sapstain fungi
- Meetings
- Meetings
Articles in the same Issue
- Masthead
- Masthead
- Original Articles
- A new lignan glycoside and phenolics from the branch wood of Pinus banksiana Lambert
- Fragmentation mechanism of the phenylcoumaran-type lignin model compound by ToF-SIMS
- Enzymatic hydrolysis of loblolly pine: effects of cellulose crystallinity and delignification
- Aggregation and adsorption behaviors of carboxymethylated lignin (CML) in aqueous solution
- The adsorption and dispersing mechanisms of sodium lignosulfonate on Al2O3 particles in aqueous solution
- Moisture-dependent orthotropic tension-compression asymmetry of wood
- Time-domain NMR study of the drying of hemicellulose extracted aspen (Populus tremuloides Michx.)
- Substitution of phenol in phenol-formaldehyde (PF) resins by wood tar for plywood adhesives
- Modification of Pinus sylvestris L. wood with quat- and amino-silicones of different chain lengths
- Reducing copper leaching from treated wood by sol-gel derived TiO2 and SiO2 depositions
- Measuring the thermal properties of green wood by the transient plane source (TPS) technique
- Effect of short-chain silicones bearing different functional groups on the resistance of pine (Pinus sylvestris L.) and beech (Fagus sylvatica L.) against decay fungi
- Antimicrobial surfaces of quaternized poly[(2-dimethyl amino)ethyl methacrylate] grafted on wood via ARGET ATRP
- Cloning and characterization of a 2,3-oxidosqualene cyclase from Eleutherococcus trifoliatus
- Phylogenetic analysis of the genus Fusarium and their antifungal activity against wood-decay and sapstain fungi
- Meetings
- Meetings
