The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud

Detalhes bibliográficos
Autor(a) principal: Esteves, Bruno
Data de Publicação: 2022
Outros Autores: Cruz-Lopes, Luísa, Viana, Helder, Ferreira, José, Domingos, Idalina, Nunes, Leonel J.R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/24396
Resumo: Forests in Portugal are highly dependent on a short number of wood species, and new species with higher profitability are needed. The Paulownia species has generated great interest due to its fast-growing and relatively good wood properties. However, environmental factors have shown that Paulownia grows differently in each case. This study intends to determine the properties of young Paulownia trees from Portuguese plantations to determine the best age to cut the trees according to their use. The chemical composition (extractives in dichloromethane, ethanol and water, lignin, -cellulose, and hemicelluloses), heating value, elemental analysis (CHNO), inorganic elements and thermogravimetric analyses (TGA), and the most important mechanical and physical properties (density, MOE, bending strength, water absorption equilibrium, moisture content, and dimensional changes) were determined for 1-, 3-, and 5-year-old trees. The results show that, chemically, the extractives increased while hemicelluloses decreased with age, and no trend was found for lignin and -cellulose. The physical and mechanical properties increased with age, except for the MOE and bending strength. The 5-year-old samples presented the best features for pellet production, namely, calorific power, elemental composition CHNO and sulfur, and inorganic elements
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spelling The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steudagechemical compositionelemental compositionmechanical propertiesPaulownia tomentosaphysical propertiesForests in Portugal are highly dependent on a short number of wood species, and new species with higher profitability are needed. The Paulownia species has generated great interest due to its fast-growing and relatively good wood properties. However, environmental factors have shown that Paulownia grows differently in each case. This study intends to determine the properties of young Paulownia trees from Portuguese plantations to determine the best age to cut the trees according to their use. The chemical composition (extractives in dichloromethane, ethanol and water, lignin, -cellulose, and hemicelluloses), heating value, elemental analysis (CHNO), inorganic elements and thermogravimetric analyses (TGA), and the most important mechanical and physical properties (density, MOE, bending strength, water absorption equilibrium, moisture content, and dimensional changes) were determined for 1-, 3-, and 5-year-old trees. The results show that, chemically, the extractives increased while hemicelluloses decreased with age, and no trend was found for lignin and -cellulose. The physical and mechanical properties increased with age, except for the MOE and bending strength. The 5-year-old samples presented the best features for pellet production, namely, calorific power, elemental composition CHNO and sulfur, and inorganic elementsMDPIRepositório da Universidade de LisboaEsteves, BrunoCruz-Lopes, LuísaViana, HelderFerreira, JoséDomingos, IdalinaNunes, Leonel J.R.2022-05-26T14:17:08Z20222022-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/24396engEsteves, B.; Cruz-Lopes, L.; Viana, H.; Ferreira, J.; Domingos, I.; Nunes, L.J.R. The Influence of Age on theWood Properties of Paulownia tomentosa (Thunb.) Steud. Forests 2022, 13, 700https://doi.org/ 10.3390/f13050700info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:54:03Zoai:www.repository.utl.pt:10400.5/24396Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:08:27.261434Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud
title The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud
spellingShingle The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud
Esteves, Bruno
age
chemical composition
elemental composition
mechanical properties
Paulownia tomentosa
physical properties
title_short The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud
title_full The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud
title_fullStr The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud
title_full_unstemmed The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud
title_sort The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud
author Esteves, Bruno
author_facet Esteves, Bruno
Cruz-Lopes, Luísa
Viana, Helder
Ferreira, José
Domingos, Idalina
Nunes, Leonel J.R.
author_role author
author2 Cruz-Lopes, Luísa
Viana, Helder
Ferreira, José
Domingos, Idalina
Nunes, Leonel J.R.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Esteves, Bruno
Cruz-Lopes, Luísa
Viana, Helder
Ferreira, José
Domingos, Idalina
Nunes, Leonel J.R.
dc.subject.por.fl_str_mv age
chemical composition
elemental composition
mechanical properties
Paulownia tomentosa
physical properties
topic age
chemical composition
elemental composition
mechanical properties
Paulownia tomentosa
physical properties
description Forests in Portugal are highly dependent on a short number of wood species, and new species with higher profitability are needed. The Paulownia species has generated great interest due to its fast-growing and relatively good wood properties. However, environmental factors have shown that Paulownia grows differently in each case. This study intends to determine the properties of young Paulownia trees from Portuguese plantations to determine the best age to cut the trees according to their use. The chemical composition (extractives in dichloromethane, ethanol and water, lignin, -cellulose, and hemicelluloses), heating value, elemental analysis (CHNO), inorganic elements and thermogravimetric analyses (TGA), and the most important mechanical and physical properties (density, MOE, bending strength, water absorption equilibrium, moisture content, and dimensional changes) were determined for 1-, 3-, and 5-year-old trees. The results show that, chemically, the extractives increased while hemicelluloses decreased with age, and no trend was found for lignin and -cellulose. The physical and mechanical properties increased with age, except for the MOE and bending strength. The 5-year-old samples presented the best features for pellet production, namely, calorific power, elemental composition CHNO and sulfur, and inorganic elements
publishDate 2022
dc.date.none.fl_str_mv 2022-05-26T14:17:08Z
2022
2022-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/24396
url http://hdl.handle.net/10400.5/24396
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Esteves, B.; Cruz-Lopes, L.; Viana, H.; Ferreira, J.; Domingos, I.; Nunes, L.J.R. The Influence of Age on theWood Properties of Paulownia tomentosa (Thunb.) Steud. Forests 2022, 13, 700
https://doi.org/ 10.3390/f13050700
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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