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Title: Performance Enhancement of Wood Surfaces Used in Outdoor Applications: The Effect of Sol-gel Treatment on the Weathering Performance of Solid Wood-polymer Composites

Source: The Fifth European Conference on Wood Modification, September 20-21, 2010. pp. 355-362

Author(s)Ibach, Rebecca E.; Tshabalala, Mandla A.; Starr, Charles

Publication Year: 2010  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4707-2A

Abstract: Although wood remains the building material of choice in residential construction, it has the deleterious properties of poor durability and dimensional instability. For above-ground exterior applications such as deck flooring, important properties include hardness and weathering resistance. To improve these properties, wood was modified with acrylic polymers to slow the moisture sorption and improve its hardness and with a hybrid inorganic-organic thin film to improve its photostability. Modification of the wood was accomplished by in situ polymerization of acrylic monomers in the lumens and voids of the wood. Deposition of the hybrid inorganic-organic thin film in the cell walls of the outer layers of the wood was accomplished by sol-gel deposition from a water-borne sol of silsesquioxane oligomers. The weathering behaviour, including weight and colour changes of the coated and non-coated modified wood specimens under exposure to accelerated weathering conditions was performed in a Weather-Ometer™ (Atlas Material Testing Technology, LLC, Chicago, Illinois).

Keywords: Wood surfaces, deterioration, coatings, thin films, moisture, water repellents, wood moisture, surface chemistry, weathering, color fading, ultraviolet radiation, stabilizing agents, photodegradation, accelerated life testing, hardness, composite materials, wood plastic composites, plant cell walls, monomers, Thuja plicata, western redcedar, sol-gel deposition, moisture content, resistance to decay, wood decay, durability, exposure tests, discoloration, photostabilization, surface properties, accelerated testing, dimensional stability, wood-plastic materials, polymers, silsequioxane oligomers, colour, wood-polymer composites

Publication Review Process: Non-Refereed (Other)

File size: 227 kb(s)

Date posted: 05/02/2011
RITS Product ID: 36563
Current FPL Scientists associated with this product (listed alphabetically)
Ibach, Rebecca E.
Research Chemist
Tshabalala, Mandla A.
Research Chemist
 

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