The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud.
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.19/7516 |
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, α-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 α-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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The Influence of Age on the Wood Properties of Paulownia tomentosa (Thunb.) Steud.agechemical 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, α-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 α-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.Repositório Científico do Instituto Politécnico de ViseuEsteves, BrunoCruz-Lopes, LuísaViana, Helder Filipe dos SantosFerreira, JoséDomingos, IdalinaNunes, Leonel J. R.2023-01-09T11:29:05Z2022-04-292023-01-05T09:55:33Z2022-04-29T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.19/7516engcv-prod-299882410.3390/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:RCAAP2023-01-16T15:29:38Zoai:repositorio.ipv.pt:10400.19/7516Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:45:13.904898Repositório 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 Filipe dos Santos Ferreira, José Domingos, Idalina Nunes, Leonel J. R. |
author_role |
author |
author2 |
Cruz-Lopes, Luísa Viana, Helder Filipe dos Santos Ferreira, José Domingos, Idalina Nunes, Leonel J. R. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Repositório Científico do Instituto Politécnico de Viseu |
dc.contributor.author.fl_str_mv |
Esteves, Bruno Cruz-Lopes, Luísa Viana, Helder Filipe dos Santos 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, α-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 α-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 |
2022-04-29 2022-04-29T00:00:00Z 2023-01-09T11:29:05Z 2023-01-05T09:55:33Z |
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/10400.19/7516 |
url |
http://hdl.handle.net/10400.19/7516 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
cv-prod-2998824 10.3390/f13050700 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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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