Weathering performance of spruce coated with water based acrylic paint modified with TiO2 and clay nanoparticles |
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| Authors: | Selamawit Mamo Fufa Bjørn Petter Jelle Per Jostein Hovde |
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| Affiliation: | 1. Department of Civil and Transport Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway;2. Department of Material and Structures, SINTEF Building and Infrastructure, 7465 Trondheim, Norway |
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| Abstract: | This work examines the effect of wood specimens coated with water based acrylic coatings modified with TiO2 and clay nanoparticles against weathering strain. The long-term durability of the specimens towards climate strain was studied within a relatively short time frame by accelerated climate ageing. The surface changes that occurred as a result of photodegradation of the specimens subjected to accelerated climate exposures were studied using colour measurements and Fourier transform infrared (FTIR) spectroscopy. The results revealed a significant decrease in the intensity of lignin bands attributed to degradation of the lignin component of the wood. However, the intensity of the lignin photodegradation was lower for coated specimens, with slightly lower degradation for the specimens coated with paints modified with TiO2 and unmodified montmorillonite clay nanoparticles. |
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| Keywords: | Surface treatment Accelerated ageing Colour analysis FTIR TiO2 nanoparticle Nanoclay |
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