Photostability and moisture uptake properties of wood veneers coated with a combination of thin sol-gel films and light stabilizers
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Mandla A. Tshabalala
,
Ryan Libert
Abstract
In recent years, there has been increased interest in the use of inorganic UV blocking nanoparticles for photostabilization of wood surfaces. Photostability and moisture uptake properties of wood veneers coated with a combination of hybrid inorganic-organic thin sol-gel films and organic light stabilizers was investigated. The light stabilizers were applied by brushing, and the thin sol-gel films were deposi-ted on the wood surface by dipping in a sol prepared from a mixture of methyltrimethoxysilane, hexadecyltrimethoxysilane, and aluminum isopropoxide precursors. Although the sol-gel film improved the moisture resistance of the wood veneers, it showed mixed results on photostability. Under light and spray conditions in a Weather-Ometer™, specimens treated with a combination of sol-gel thin film and a UV absorber, tris-resorcinol triazine and an acrylic self-crosslink-ing binder, or treated with lignin stabilizer/tris-resorcinol triazine/acrylic self-crosslinking binder showed good overall weathering performance. Under permanent light conditions in the Weather-Ometer™, specimens treated with a combination of sol-gel thin film, a lignin stabilizer, and a water soluble UV absorber – namely: (2-hydroxyphenyl)-benzotriazole – revealed a good overall weathering performance. This study has demonstrated the feasibility of using a combination of organic light stabilizers and sol-gel deposits of hybrid inorganic-organic thin films to improve weathering resistance of softwood substrates.
©2011 by Walter de Gruyter Berlin New York
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- Editorial
- Note from the Editor-in-Chief
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- Spherical PF resin beads prepared from phenol-liquefied Bambusa dolichoclada with suspension polymerization
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- Quantification of polypropylene (PP) in wood plastic composites (WPCs) by analytical pyrolysis (Py) and differential scanning calorimetry (DSC)
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- Photostability and moisture uptake properties of wood veneers coated with a combination of thin sol-gel films and light stabilizers
- Thermal degradation of bending properties of structural wood and wood-based composites
- Modelling time-dependent mechanical behaviour of softwood using deformation kinetics
- Viscoelastic properties of woody hemp core
- Scale effect in the anisotropic deformation change of tracheid cells during water adsorption
- Phylogenetic analysis of major molds inhabiting woods and their discoloration characteristics. Part 1. Genus Trichoderma
- Phylogenetic analysis of major molds inhabiting woods and their discoloration characteristics. Part 2. Genus Penicillium
- Fungi associated with bamboo and their decay capabilities
- Antifungal activities of three supercritical fluid extracted cedar oils
- Short Note
- Influence of wood specimen thickness on its mechanical properties by tensile testing: solid wood versus veneer
- Meetings
- Meetings
Articles in the same Issue
- Editorial
- Note from the Editor-in-Chief
- Original papers
- Delineating pMDI model reactions with loblolly pine via solution-state NMR spectroscopy. Part 1. Catalyzed reactions with wood models and wood polymers
- Delineating pMDI model reactions with loblolly pine via solution-state NMR spectroscopy. Part 2. Non-catalyzed reactions with the wood cell wall
- Effect of periodate on lignin for wood adhesive application
- Spherical PF resin beads prepared from phenol-liquefied Bambusa dolichoclada with suspension polymerization
- Novel paper sizing agents based on renewables. Part 4: Application properties in comparison to conventional ASA sizes
- Organosolv pretreatment of olive tree biomass for fermentable sugars
- NIR-based prediction of extractives in American white oak heartwood
- Synthesis and herbicidal activity of 5-dehydroabietyl-1,3,4-oxadiazole derivatives
- Quantification of polypropylene (PP) in wood plastic composites (WPCs) by analytical pyrolysis (Py) and differential scanning calorimetry (DSC)
- Prediction of plywood bonding quality using an artificial neural network
- Photostability and moisture uptake properties of wood veneers coated with a combination of thin sol-gel films and light stabilizers
- Thermal degradation of bending properties of structural wood and wood-based composites
- Modelling time-dependent mechanical behaviour of softwood using deformation kinetics
- Viscoelastic properties of woody hemp core
- Scale effect in the anisotropic deformation change of tracheid cells during water adsorption
- Phylogenetic analysis of major molds inhabiting woods and their discoloration characteristics. Part 1. Genus Trichoderma
- Phylogenetic analysis of major molds inhabiting woods and their discoloration characteristics. Part 2. Genus Penicillium
- Fungi associated with bamboo and their decay capabilities
- Antifungal activities of three supercritical fluid extracted cedar oils
- Short Note
- Influence of wood specimen thickness on its mechanical properties by tensile testing: solid wood versus veneer
- Meetings
- Meetings
