Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack
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.
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Subjects: | K50 - Technologie des produits forestiers, J12 - Manutention, transport, stockage et conservation des produits forestiers, bois, produit de préservation du bois, Pinus sylvestris, acide borique, acétate de polyvinyle, Postia placenta, Isoptera, Reticulitermes, http://aims.fao.org/aos/agrovoc/c_8421, http://aims.fao.org/aos/agrovoc/c_8429, http://aims.fao.org/aos/agrovoc/c_5912, http://aims.fao.org/aos/agrovoc/c_1016, http://aims.fao.org/aos/agrovoc/c_28204, http://aims.fao.org/aos/agrovoc/c_35514, http://aims.fao.org/aos/agrovoc/c_3969, http://aims.fao.org/aos/agrovoc/c_6537, |
Online Access: | http://agritrop.cirad.fr/561764/ http://agritrop.cirad.fr/561764/1/document_561764.pdf |
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dig-cirad-fr-5617642024-01-28T19:41:17Z http://agritrop.cirad.fr/561764/ http://agritrop.cirad.fr/561764/ Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack. Mohareb Ahmed, Thévenon Marie-France, Wozniak Edmond, Gerardin Philippe. 2011. Wood Science and Technology, 45 (3) : 407-417.https://doi.org/10.1007/s00226-010-0344-4 <https://doi.org/10.1007/s00226-010-0344-4> Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack Mohareb, Ahmed Thévenon, Marie-France Wozniak, Edmond Gerardin, Philippe eng 2011 Wood Science and Technology K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers bois produit de préservation du bois Pinus sylvestris acide borique acétate de polyvinyle Postia placenta Isoptera Reticulitermes http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_8429 http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_28204 http://aims.fao.org/aos/agrovoc/c_35514 http://aims.fao.org/aos/agrovoc/c_3969 http://aims.fao.org/aos/agrovoc/c_6537 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. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/561764/1/document_561764.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1007/s00226-010-0344-4 10.1007/s00226-010-0344-4 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=212846 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00226-010-0344-4 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1007/s00226-010-0344-4 |
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K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers bois produit de préservation du bois Pinus sylvestris acide borique acétate de polyvinyle Postia placenta Isoptera Reticulitermes http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_8429 http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_28204 http://aims.fao.org/aos/agrovoc/c_35514 http://aims.fao.org/aos/agrovoc/c_3969 http://aims.fao.org/aos/agrovoc/c_6537 K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers bois produit de préservation du bois Pinus sylvestris acide borique acétate de polyvinyle Postia placenta Isoptera Reticulitermes http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_8429 http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_28204 http://aims.fao.org/aos/agrovoc/c_35514 http://aims.fao.org/aos/agrovoc/c_3969 http://aims.fao.org/aos/agrovoc/c_6537 |
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K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers bois produit de préservation du bois Pinus sylvestris acide borique acétate de polyvinyle Postia placenta Isoptera Reticulitermes http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_8429 http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_28204 http://aims.fao.org/aos/agrovoc/c_35514 http://aims.fao.org/aos/agrovoc/c_3969 http://aims.fao.org/aos/agrovoc/c_6537 K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers bois produit de préservation du bois Pinus sylvestris acide borique acétate de polyvinyle Postia placenta Isoptera Reticulitermes http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_8429 http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_28204 http://aims.fao.org/aos/agrovoc/c_35514 http://aims.fao.org/aos/agrovoc/c_3969 http://aims.fao.org/aos/agrovoc/c_6537 Mohareb, Ahmed Thévenon, Marie-France Wozniak, Edmond Gerardin, Philippe Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack |
description |
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. |
format |
article |
topic_facet |
K50 - Technologie des produits forestiers J12 - Manutention, transport, stockage et conservation des produits forestiers bois produit de préservation du bois Pinus sylvestris acide borique acétate de polyvinyle Postia placenta Isoptera Reticulitermes http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_8429 http://aims.fao.org/aos/agrovoc/c_5912 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_28204 http://aims.fao.org/aos/agrovoc/c_35514 http://aims.fao.org/aos/agrovoc/c_3969 http://aims.fao.org/aos/agrovoc/c_6537 |
author |
Mohareb, Ahmed Thévenon, Marie-France Wozniak, Edmond Gerardin, Philippe |
author_facet |
Mohareb, Ahmed Thévenon, Marie-France Wozniak, Edmond Gerardin, Philippe |
author_sort |
Mohareb, Ahmed |
title |
Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack |
title_short |
Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack |
title_full |
Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack |
title_fullStr |
Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack |
title_full_unstemmed |
Effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack |
title_sort |
effects of polyvinyl alcohol on leachability and efficacy of boron wood preservatives against fungal decay and termite attack |
url |
http://agritrop.cirad.fr/561764/ http://agritrop.cirad.fr/561764/1/document_561764.pdf |
work_keys_str_mv |
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_version_ |
1792497959282147328 |