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    Author(s): Rongbo Zheng; Mandla A. Tshabalala; Qingyu Li; Hongyan Wang
    Date: 2015
    Source: BioResources Volume 10, Number 4, 2015; pp. 7053-7064.
    Publication Series: Scientific Journal (JRNL)
    Station: Forest Products Laboratory
    PDF: View PDF  (478.16 KB)

    Description

    The weathering performance of wood coated with a combination of rutile TiO2 hierarchicalnanostructures and a sol-gel deposit of alkoxysilanes was determined by exposing three sets of specimens to UV light and water spray. The first set consisted of specimens coated with a mixture of methyltrimethoxysilane (MTMOS) and hexadecyltrimethoxysilane (HDTMOS). The second set consisted of specimens coated with nanostructural TiO2 followed by a mixture of MTMOS and HDTMOS. The third set consisted of uncoated control specimens. The wood coated with TiO2 followed by a mixture of MTDMOS and HDTMOS exhibited significantly less surface color change and weight loss as a result of UV light-induced degradation and erosion from water spray in comparison with the other groups. However, the coated surfaces were gradually transformed from hydrophobic to hydrophilic. Despite this apparent weakness, the MTMOS/HDTMOS/TiO2 coating, with superior photostabilization properties and resistance to surface erosion, may be useful for improving the weathering performance of wood coated with semi-transparent wood stains.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Zheng, Rongbo; Tshabalala, Mandla A.; Li, Qingyu; Wang, Hongyan 2015. Weathering Performance of Wood Coated with a Combination of Alkoxysilanes and Rutile TiO2 Heirarchical Nanostructures. BioResources Volume 10, Number 4, 2015; pp. 7053-7064.

    Keywords

    Coating, Hydrophobic, Nanostructure, Photostabilization, Rutile, Titanium dioxide, Weathering, Wood

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