Wood Science and Technology

, Volume 45, Issue 3, pp 407–417 | Cite as

Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack

  • Ahmed Mohareb
  • Marie France Thévenon
  • Edmond Wozniak
  • Philippe Gérardin


In this study, the use of polyvinyl alcohol (PVA) as boron fixative agent was investigated. Two levels of PVA (2.5 and 4%) were evaluated with disodium octaborate tetrahydrate (DOT) at three concentrations (1, 2 and 4% boric acid equivalent (BAE)) using a double vacuum impregnation process on Scots pine sapwood specimens. Leaching was performed according to a laboratory leaching procedure. Boron analysis using atomic absorption spectrometer showed a significant reduction in boron leachability for the samples treated with both concentrations of PVA when compared to the stand-alone boron treatment leading to boron retentions capable of preventing wood biological degradations. Decay resistance of the leached specimens was evaluated using the brown rot fungus Poria placenta. Even if complete protection was not fully achieved, an improvement in decay resistance was observed for the samples treated with DOT in presence of PVA. This leak of efficacy was attributed to a decrease in the biological activity of the complexed boron against fungi. Durability of treated wood against termite attack, evaluated using Reticulitermes santonensis, indicated a significant enhancement for the samples treated in presence of the fixative agent compared to the pure boron treatment.


  1. Baysal E, Ozaki SK, Yalinkilic MK (2004) Dimensional stabilization of wood treated with furfuryl alcohol catalysed by borates. Wood Sci Technol 38:405–415Google Scholar
  2. Drysdale AJ (1994) Boron treatments for the preservation of wood—a review of efficacy data for fungi and termites. IRG/WP 94-30037. International Research Group on Wood Preservation, StockholmGoogle Scholar
  3. European Committee for Standardization (1990) Wood preservatives—Determination of toxic values against Reticulitermes santonensis de Feytaud (laboratory method). NF EN 117Google Scholar
  4. European committee for standardization (1994) Wood preservatives—methods for measuring losses of active ingredients and other preservative ingredients from treated timber—part 2: laboratory method for obtaining samples for analysis to measure losses by leaching into water or synthetic sea water. ENV 1250-2, BrusselsGoogle Scholar
  5. Gezer ED, Michael JH, Morrell JJ (1999) Effects of glycol on leachability and efficacy of boron wood preservatives. Wood Fiber Sci 31:136–142Google Scholar
  6. Kartal SN, Green F (2003) Leachability of boron from wood treated with natural and semi-synthetic polymers and calcium precipitating agent. Holz Roh- Werkst. 61:388–389CrossRefGoogle Scholar
  7. Kartal SN, Imamura Y (2004) Effects of N′-N-(1, 8-naphthalyl)hydroxylamine (NHA-Na) and hydroxynaphthalimide (NHA-H) on boron leachability and biological degradation of wood. Holz Roh- Werkst 62:378–385CrossRefGoogle Scholar
  8. Kartal SN, Yoshimura T, Imamura Y (2004) Decay and termite resistance of boron-treated and chemically modified wood by in situ co-polymerisation of allyl glycidyl ether (AGE) with methyl methacryalte (MMA). Int Biodeterior Biodegradation 53:111–117CrossRefGoogle Scholar
  9. Kartal SN, Yoshimura T, Imamura Y (2009) Modification of wood with Si compounds to limit boron leaching from treated wood and to increase termite decay resistance. Int Biodeterior Biodegradation 63:187–190CrossRefGoogle Scholar
  10. Lin HL, Liu WH, Liu YF, Cheng CH (2002) Complexation equilibrium constants of poly(vinyl alcohol)-borax dilute aqueous solutions—Consideration of electrostatic charge repulsion and free ion charge shielding effect. J Polym Res 9(4):233–238CrossRefGoogle Scholar
  11. Lloyd JD (1998) Borates and their biological applications. IRG/WP 98–30178. International Research Group on Wood Preservation, StockholmGoogle Scholar
  12. Lloyd JD, Dickinson DJ, Murphy RJ (1990) The probable mechanisms of action of boric acid and borates as wood preservatives. IRG/WP 1450. International Research Group on Wood Preservation, StockholmGoogle Scholar
  13. Lyon F, Thévenon MF, Hwang WJ, Imamura Y, Pizzi A (2007) Effect of an oil heat treatment on the leachability and biological resistance of boric acid impregnated wood. Ann For Sci 64:673–678CrossRefGoogle Scholar
  14. Mohareb A, Van Acker J, Stevens M (2002) Effect of protective additives on leachability and efficacy of borate treated wood. IRG/WP 02-30290. International Research Group on Wood Preservation, StockholmGoogle Scholar
  15. Mohareb A, Van Acker J, Stevens M (2004) Leachability and efficacy of fatty acid derived boron esters as wood preservatives. IRG/WP 04-30351. International Research Group on Wood Preservation, StockholmGoogle Scholar
  16. Mourant D, Yang DQ, Lu X, Riedl B, Roy C (2009) Copper and boron fixation in wood by pyrolytic resins. Bioresour Technol 100:1442–1449PubMedCrossRefGoogle Scholar
  17. Obanda DN, Shupe FT, Barnes HM (2008) Reducing leaching of boron based wood preservatives—A review of research. Bioresour Technol 99:7312–7322PubMedCrossRefGoogle Scholar
  18. Schoeman WM, Lloyd JD (1998) International standardisation: a hypothetical case study with stand-alone borate wood preservatives. IRG/WP 98-20147. International Research Group on Wood Preservation, StockholmGoogle Scholar
  19. Temiz A, Alfredsen G, Eikenes M, Terziev N (2008) Decay resistance of wood treated with boric acid and tall oil derivates. Bioresour Technol 99:2102–2106PubMedCrossRefGoogle Scholar
  20. Thévenon MF, Pizzi A (2003) Polyborate ions’ influence on the durability of wood treated with non-toxic protein borate preservatives. Holz Roh- Werkst 61:457–464CrossRefGoogle Scholar
  21. Thévenon MF, Pizzi A, Haluk JP (1997) Non-toxic albumin and soja protein borates as ground-contact wood preservatives. Holz Roh- Werkst 55:293–296CrossRefGoogle Scholar
  22. Thévenon MF, Pizzi A, Haluk JP (1998) Protein borates as non-toxic, long-term, wide-spectrum, ground-contact wood preservatives. Holzforschung 52:241–248CrossRefGoogle Scholar
  23. Toussaint-Dauvergne E, Soulounganga P, Gérardin P, Loubinoux B (2000) Glycerol/glyoxal: a new boron fixation system for wood preservation and dimensional stabilization. Holzforschung 54:123–126CrossRefGoogle Scholar
  24. Weining C, Kamdem DP (1999) Bioefficacy of boric acid grafted onto wood. IRG/WP/30302. The International Research Group on Wood Preservation, StockholmGoogle Scholar

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Ahmed Mohareb
    • 1
  • Marie France Thévenon
    • 2
  • Edmond Wozniak
    • 3
  • Philippe Gérardin
    • 4
  1. 1.Department of Forestry and Wood Technology, Faculty of Agriculture, 21545-El-ShatbyAlexandria UniversityAlexandriaEgypt
  2. 2.Laboratoire de préservation des boisCIRAD PERSYST, UPR 40Montpellier Cedex 5France
  3. 3.Dyrup S.A.S, Zone Industrielle MontplaisirAlbiFrance
  4. 4.Laboratoire d’Etudes et de Recherche sur le Matériau Bois, EA 4370, IFR 110Nancy UniversitéVandoeuvre-lès-NancyFrance

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