Journal
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
Volume 75, Issue -, Pages 49-54Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ibiod.2012.07.019
Keywords
Alkoxysilane; Sol-gel materials; Boric acid; Coniophora puteana; Trametes versicolor; Poria placenta; Wood modification; Hylotrupes bajulus
Funding
- PAT (Provincia Autonoma Trento) under the SOFIE project
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A wood preservative based on tetraethyl orthosilicate (TEOS), 3-aminopropyltriethoxysilane (APTES), and boric acid (BA) in volume ratio TEOS/APTES 1:1 and in molar ratio APTES/BA 50:1 was applied to wood by the sol-gel process. Standard EN 113 and mini wood block tests were carried out to determine the effectiveness against fungal decay. The same formulation applied by immersion was tested against larvae of the wood-borer insect Hylotrupes bajulus. This formulation showed good efficacy against Coniophora puteana, Poria placenta, and Trametes versicolor, even after a leaching procedure. It was also effective against the coleopter H. Bajulus. Different molar ratios of APTES/BA-2.5:1, 5:1, and 10:1-were tested with a leaching procedure in accordance with EN 84 to determine the best fixation of boric acid into the wood. The ratio APTES/BA 5:1 was found to be the most effective for fixing boron into wood. (C) 2012 Elsevier Ltd. All rights reserved.
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