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Termite Resistance, Chemical and Mechanical Characterization of Paulownia tomentosa Wood before and after Heat Treatment

2021-08Journal article Open access
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dc.contributor.authorEsteves, Bruno M.
dc.contributor.authorFerreira, Helena
dc.contributor.authorViana, Hélder
dc.contributor.authorFerreira, José
dc.contributor.authorDomingos, Idalina J.
dc.contributor.authorCruz-Lopes, Luísa
dc.contributor.authorJones, Dennis
dc.contributor.authorNunes, Lina
dc.date.accessioned2021-10-12T16:40:11Z
dc.date.available2021-10-12T16:40:11Z
dc.date.issued2021-08
dc.description.abstractThe introduction of new species in forest management must be undertaken with a degree of care, to help prevent the spread of invasive species. However, new species with higher profitability are needed to increase forest products value and the resilience of rural populations. Paulownia tomentosa has an extremely fast growth. The objective and novelty of this work was to study the potential use of young Paulownia trees grown in Portugal by using heat treatment to improve its properties, thereby allowing higher value applications of the wood. The average chemical composition of untreated and heat-treated wood was determined. The extractive content was determined by successive Soxhlet extraction with dichloromethane (DCM), ethanol and water as solvents. The composition of lipophilic extracts was performed by injection in GC-MS with mass detection. Insoluble and soluble lignin, holocellulose and α-cellulose were also determined. Physical (density and water absorption and dimensional stability) and mechanical properties (bending strength and bending stiffness) and termite resistance was also determined. Results showed that extractive content increased in all solvents, lignin and α-cellulose also increased and hemicelluloses decreased. Compounds derived from the thermal degradation of lignin were found in heat-treated wood extractions. Dimensional stability improved but there was a decrease in mechanical properties. Resistance against termites was better for untreated wood than for heat-treated wood, possibly due to the thermal degradation of some toxic extractives.en
dc.description.sponsorshipThis work was funded by Caixa Geral de Depósitos and the Polytechnic of Viseu through the project VALPT (PROJ/IPV/ID&I/003) and FCT-Foundation for Science and Technology, I.P., through CERNAS Research Centre, within the scope of the project UIDB/00681/2020 and through CITAB Research Centre by Project UIDB/04033/2020. Additional support to D.J. through the project "Advanced research supporting the forestry and wood-processing sector's adaptation to global change and the 4th industrial revolution", OP RDE (Grant No. CZ.02.1.01/0.0/0.0/16_019/0000803) and CT WOOD-a center of excellence at Lulea University of Technology supported by the Swedish wood industry-is also gratefully acknowledged.en
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationEsteves, B., Ferreira, H., Viana, H., Ferreira, J., Domingos, I., Cruz-Lopes, L., Jones, D. & Nunes, L. (2021). Termite resistance, chemical and mechanical characterization of Paulownia tomentosa wood before and after heat treatment. "Forests", 12(8): 1114. DOI:10.3390/f12081114en
dc.identifier.doi10.3390/f12081114pt_PT
dc.identifier.eissn1999-4907
dc.identifier.urihttp://hdl.handle.net/10400.3/6089
dc.identifier.wos000690555100001
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationPROJ/IPV/ID&I/003pt_PT
dc.relationFCT UIDB/00681/2020pt_PT
dc.relationFCT UIDB/04033/2020pt_PT
dc.relation.publisherversionhttps://www.mdpi.com/1999-4907/12/8/1114pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectChemical Compositionen
dc.subjectHeat Treatmenten
dc.subjectMechanical Propertiesen
dc.subjectPaulownia tomentosapt_PT
dc.subjectTermitesen
dc.titleTermite Resistance, Chemical and Mechanical Characterization of Paulownia tomentosa Wood before and after Heat Treatmenten
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceSwitzerlanden
oaire.citation.issue(8)pt_PT
oaire.citation.titleForestsen
oaire.citation.volume12pt_PT
person.familyNameRibeiro Nunes
person.givenNameLina Maria
person.identifierA-7169-2013
person.identifier.ciencia-id2515-2AE7-A765
person.identifier.orcid0000-0001-6849-3241
person.identifier.scopus-author-id23006201100
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication00c8e07c-ade7-454f-80be-21e23f36a0f5
relation.isAuthorOfPublication.latestForDiscovery00c8e07c-ade7-454f-80be-21e23f36a0f5

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