HYGROSCOPICITY OF WOOD FROM Eucalyptus grandis AND Pinus taeda SUBJECTED TO THERMAL TREATMENT
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Cerne (Online) |
Texto Completo: | https://cerne.ufla.br/site/index.php/CERNE/article/view/872 |
Resumo: | This study aimed to investigate the effect of the thermal treatment technique under two conditions—autoclavecombined with electric oven and electric oven only—on the hygroscopic properties of wood from Pinus taeda L. and Eucalyptus grandis W. Hill ex Maiden, comparing them with results obtained for untreated wood. Three trees at age 25 years were sampled, with boards being removed at DBH level in order to make specimens 2.5 x 2.5 x 5.0 cm in size in the radial, tangential and axial direction respectively. In the combined treatment, specimens were subjected to thermal treatment in an autoclave set at 130°C/± 3°C and kgf/ cm² pressure for 3 hours, then to a conditioning period, followed by heat in an electric oven set at 160°C/±1°C for the same time. Properties being evaluated included water absorption rate, volumetric swelling, water repellency effectiveness and anti-swelling efficiency. Results revealed that the thermal treatments being adopted were effective in reducing hygroscopicity and in increasing the dimensional stability of both species, revealing also that the combined autoclave and electric oven treatment provides best results. |
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HYGROSCOPICITY OF WOOD FROM Eucalyptus grandis AND Pinus taeda SUBJECTED TO THERMAL TREATMENTThermal treatment of woodeucalyptuspinewoodhygroscopic propertiesThis study aimed to investigate the effect of the thermal treatment technique under two conditions—autoclavecombined with electric oven and electric oven only—on the hygroscopic properties of wood from Pinus taeda L. and Eucalyptus grandis W. Hill ex Maiden, comparing them with results obtained for untreated wood. Three trees at age 25 years were sampled, with boards being removed at DBH level in order to make specimens 2.5 x 2.5 x 5.0 cm in size in the radial, tangential and axial direction respectively. In the combined treatment, specimens were subjected to thermal treatment in an autoclave set at 130°C/± 3°C and kgf/ cm² pressure for 3 hours, then to a conditioning period, followed by heat in an electric oven set at 160°C/±1°C for the same time. Properties being evaluated included water absorption rate, volumetric swelling, water repellency effectiveness and anti-swelling efficiency. Results revealed that the thermal treatments being adopted were effective in reducing hygroscopicity and in increasing the dimensional stability of both species, revealing also that the combined autoclave and electric oven treatment provides best results. CERNECERNE2016-04-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://cerne.ufla.br/site/index.php/CERNE/article/view/872CERNE; Vol. 19 No. 1 (2013); 19-25CERNE; v. 19 n. 1 (2013); 19-252317-63420104-7760reponame:Cerne (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLAenghttps://cerne.ufla.br/site/index.php/CERNE/article/view/872/651Copyright (c) 2016 CERNEinfo:eu-repo/semantics/openAccessModes, Karina SoaresSantini, Elio JoséVivian, Magnos Alan2016-04-19T15:46:46Zoai:cerne.ufla.br:article/872Revistahttps://cerne.ufla.br/site/index.php/CERNEPUBhttps://cerne.ufla.br/site/index.php/CERNE/oaicerne@dcf.ufla.br||cerne@dcf.ufla.br2317-63420104-7760opendoar:2024-05-21T19:54:09.160723Cerne (Online) - Universidade Federal de Lavras (UFLA)true |
dc.title.none.fl_str_mv |
HYGROSCOPICITY OF WOOD FROM Eucalyptus grandis AND Pinus taeda SUBJECTED TO THERMAL TREATMENT |
title |
HYGROSCOPICITY OF WOOD FROM Eucalyptus grandis AND Pinus taeda SUBJECTED TO THERMAL TREATMENT |
spellingShingle |
HYGROSCOPICITY OF WOOD FROM Eucalyptus grandis AND Pinus taeda SUBJECTED TO THERMAL TREATMENT Modes, Karina Soares Thermal treatment of wood eucalyptus pinewood hygroscopic properties |
title_short |
HYGROSCOPICITY OF WOOD FROM Eucalyptus grandis AND Pinus taeda SUBJECTED TO THERMAL TREATMENT |
title_full |
HYGROSCOPICITY OF WOOD FROM Eucalyptus grandis AND Pinus taeda SUBJECTED TO THERMAL TREATMENT |
title_fullStr |
HYGROSCOPICITY OF WOOD FROM Eucalyptus grandis AND Pinus taeda SUBJECTED TO THERMAL TREATMENT |
title_full_unstemmed |
HYGROSCOPICITY OF WOOD FROM Eucalyptus grandis AND Pinus taeda SUBJECTED TO THERMAL TREATMENT |
title_sort |
HYGROSCOPICITY OF WOOD FROM Eucalyptus grandis AND Pinus taeda SUBJECTED TO THERMAL TREATMENT |
author |
Modes, Karina Soares |
author_facet |
Modes, Karina Soares Santini, Elio José Vivian, Magnos Alan |
author_role |
author |
author2 |
Santini, Elio José Vivian, Magnos Alan |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Modes, Karina Soares Santini, Elio José Vivian, Magnos Alan |
dc.subject.por.fl_str_mv |
Thermal treatment of wood eucalyptus pinewood hygroscopic properties |
topic |
Thermal treatment of wood eucalyptus pinewood hygroscopic properties |
description |
This study aimed to investigate the effect of the thermal treatment technique under two conditions—autoclavecombined with electric oven and electric oven only—on the hygroscopic properties of wood from Pinus taeda L. and Eucalyptus grandis W. Hill ex Maiden, comparing them with results obtained for untreated wood. Three trees at age 25 years were sampled, with boards being removed at DBH level in order to make specimens 2.5 x 2.5 x 5.0 cm in size in the radial, tangential and axial direction respectively. In the combined treatment, specimens were subjected to thermal treatment in an autoclave set at 130°C/± 3°C and kgf/ cm² pressure for 3 hours, then to a conditioning period, followed by heat in an electric oven set at 160°C/±1°C for the same time. Properties being evaluated included water absorption rate, volumetric swelling, water repellency effectiveness and anti-swelling efficiency. Results revealed that the thermal treatments being adopted were effective in reducing hygroscopicity and in increasing the dimensional stability of both species, revealing also that the combined autoclave and electric oven treatment provides best results. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-05 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://cerne.ufla.br/site/index.php/CERNE/article/view/872 |
url |
https://cerne.ufla.br/site/index.php/CERNE/article/view/872 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://cerne.ufla.br/site/index.php/CERNE/article/view/872/651 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 CERNE info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 CERNE |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
CERNE CERNE |
publisher.none.fl_str_mv |
CERNE CERNE |
dc.source.none.fl_str_mv |
CERNE; Vol. 19 No. 1 (2013); 19-25 CERNE; v. 19 n. 1 (2013); 19-25 2317-6342 0104-7760 reponame:Cerne (Online) instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Cerne (Online) |
collection |
Cerne (Online) |
repository.name.fl_str_mv |
Cerne (Online) - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
cerne@dcf.ufla.br||cerne@dcf.ufla.br |
_version_ |
1799874941920739328 |