Potentialities of protein borates as low-toxic, long-term wood preservatives

  • Thévenon, Marie-France
  • Pizzi, Antonio
  • Haluk, Jean-Pierre
Publication date
January 1999
Publisher
The International Research Group on Wood Preservation

Abstract

Boron compounds are efficient wood preservatives, as well as safe for the mammals and environmentally acceptable. Their natural solubility allows them to treat almost any wood species, but is also the cause of their high depletion from treated timber in outside exposure. In order to reduce this leachability, potentialities of proteinic polymer networks retaining boron within the wood have been investigated. Several mixtures of boric acid and proteins (including ovalbumin, collagen, casein, soya flour) have been used to treat pine sapwood mini-blocks. The insoluble networks were obtained by protein gelation or coagulation, induced by a physical and/or a chemical factor. These systems appeared to retard boron leaching, the decrease of the lea...

Extracted data

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