Non-toxic wood preservatives based on boric acid-protein associations

Thévenon Marie-France, Pizzi Antonio, Haluk Jean-Pierre. 1998. Non-toxic wood preservatives based on boric acid-protein associations. In : Proceedings of the world conference on timber engineering (Vol. 1 et Vol. 2). Natterer Julius (ed.), Sandoz J.L. (ed.). Swiss Federal Institute of Technology Lausanne. Lausanne : PPUR, pp. 223-229. ISBN 2-88074-380-X World Conference on Timber Engineering. 5, Montreux, Suisse, 17 August 1998/20 August 1998.

Paper with proceedings
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Abstract : Boric acid, anon-toxic wood preservative, can not provide long term protection to timber due to its high leachability. The principle involved in this study is to fix boric acid by the formation of an association with different kind of proteins. Within the timber, in presence of boric acid, proteins (egg albumin or collagen) are insolubilized to form a solid polymer network capable of partially fixing this biocide. These systems seem to be a good method to drastically reduce the leaching of boric acid from treated timber. Biological tests have shown that timber treated with such protein borates has excellent durability performances, even when leached. Among these non-toxic protein borates, albumin borate can particularly be classified as long-term, wide-spectrum, heavy-duty, ground-contact wood preservative, showing durability performances comparable to those obtained with copper-chromium-arsenic (CCA) salts. (Résumé d'auteur)

Auteurs et affiliations

  • Thévenon Marie-France, ENSAIA (FRA)
  • Pizzi Antonio, ENSTIB (FRA)
  • Haluk Jean-Pierre, ENSAIA (FRA)

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