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Fungal durability of polyaniline modified wood and the impact of a low pulsed electric field
Norwegian Forest and Landscape Institute, Norway.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Hållbar Samhällsbyggnad.ORCID iD: 0000-0001-7933-1811
KTH Royal Institute of Technology, Sweden.
RISE, SP – Sveriges Tekniska Forskningsinstitut. KTH Royal Institute of Technology, Sweden.
2014 (English)In: International Biodeterioration & Biodegradation, ISSN 0964-8305, E-ISSN 1879-0208, Vol. 87, no Febr, p. 26-33Article in journal (Refereed) Published
Abstract [en]

New wood protection technologies should be effective against biodeterioration and at the same time minimize environmental impact. The present study investigates the effect of polyanilinemodification of wood and the effect of a pulsed electric field on fungal protection. The effect of fungi and a pulsed electric field on the conductivity of the modified wood was also measured. It was found that it is possible to polymerize polyaniline particles in-situ homogeneously throughout the wood specimens. The polyaniline particles themselves were not found to be anti-fungal, however when in contact with water they affected the pH drastically and inhibited fungal growth. The wood treatment with polyaniline and the connection to a pulsed electric fieldwere found to be effective in protecting the wood from deterioration when exposed to Postia placenta. The unmodified samples that were connected to a pulsed electric field lost under 10wt% due to fungal degradation. The combination of polyaniline treatment with the connection to a pulsed electric field showed a slight synergistic effect which resulted in less weight loss due to fungal degradation. However, a more brittle wood structure was observed.Leached and fungal exposed samples showed a significant drop in the conductivity, indicating that the network has broken down slightly. 

Place, publisher, year, edition, pages
2014. Vol. 87, no Febr, p. 26-33
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-6610DOI: 10.1016/j.ibiod.2013.11.001Scopus ID: 2-s2.0-84888124523Local ID: 15649OAI: oai:DiVA.org:ri-6610DiVA, id: diva2:964449
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2023-06-08Bibliographically approved

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