Natural weathering performance of three fast-growing Eucalypt woods

We investigated the effect of outdoor exposure on the wood surface from three fast - growing Brazilian eucalypts through color, wetting and thermal analyzes. Gympie messmate (Eucalyptus cloeziana), rose gum (Eucalyptus grandis) and blue gum (Eucalyptus saligna) woods were exposed outdoors in a subtr...

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Autores principales:	Gonzalez de Cademartori,Pedro Henrique, Missio,André Luiz, Dufau Mattos,Bruno, Gatto,Darci Alberto
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2015
Materias:	Contact angle Eucalyptus cloeziana Eucalyptus grandis Eucalyptus saligna outdoor exposure photodegradation surface color
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000400009
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spelling	oai:scielo:S0718-221X20150004000092016-10-25Natural weathering performance of three fast-growing Eucalypt woodsGonzalez de Cademartori,Pedro HenriqueMissio,André LuizDufau Mattos,BrunoGatto,Darci Alberto Contact angle Eucalyptus cloeziana Eucalyptus grandis Eucalyptus saligna outdoor exposure photodegradation surface color We investigated the effect of outdoor exposure on the wood surface from three fast - growing Brazilian eucalypts through color, wetting and thermal analyzes. Gympie messmate (Eucalyptus cloeziana), rose gum (Eucalyptus grandis) and blue gum (Eucalyptus saligna) woods were exposed outdoors in a subtropical region for 360 days. We performed three collections every 120 days. We investigated color changes of untreated and weathered woods through a spectrophotometer (CIELab* system) and changes in macro compounds of wood through thermogravimetric analysis. In addition, the apparent contact angle and work of adhesion were evaluated using a goniometer. Outdoor exposure for 120 days provided significant increment in grayish of wood surface. Thermogravimetric curves of wood changed after the weathering, especially in the regions related to hemicelluloses and lignin thermal degradation. Outdoor exposure for 360 days converted hydrophilic wood surface into a very hydrophilic one, wherein occurrence of microcracks contributed to fully spreading of water droplets.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.17 n.4 20152015-10-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000400009en10.4067/S0718-221X2015005000069
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Contact angle Eucalyptus cloeziana Eucalyptus grandis Eucalyptus saligna outdoor exposure photodegradation surface color
spellingShingle	Contact angle Eucalyptus cloeziana Eucalyptus grandis Eucalyptus saligna outdoor exposure photodegradation surface color Gonzalez de Cademartori,Pedro Henrique Missio,André Luiz Dufau Mattos,Bruno Gatto,Darci Alberto Natural weathering performance of three fast-growing Eucalypt woods
description	We investigated the effect of outdoor exposure on the wood surface from three fast - growing Brazilian eucalypts through color, wetting and thermal analyzes. Gympie messmate (Eucalyptus cloeziana), rose gum (Eucalyptus grandis) and blue gum (Eucalyptus saligna) woods were exposed outdoors in a subtropical region for 360 days. We performed three collections every 120 days. We investigated color changes of untreated and weathered woods through a spectrophotometer (CIELab* system) and changes in macro compounds of wood through thermogravimetric analysis. In addition, the apparent contact angle and work of adhesion were evaluated using a goniometer. Outdoor exposure for 120 days provided significant increment in grayish of wood surface. Thermogravimetric curves of wood changed after the weathering, especially in the regions related to hemicelluloses and lignin thermal degradation. Outdoor exposure for 360 days converted hydrophilic wood surface into a very hydrophilic one, wherein occurrence of microcracks contributed to fully spreading of water droplets.
author	Gonzalez de Cademartori,Pedro Henrique Missio,André Luiz Dufau Mattos,Bruno Gatto,Darci Alberto
author_facet	Gonzalez de Cademartori,Pedro Henrique Missio,André Luiz Dufau Mattos,Bruno Gatto,Darci Alberto
author_sort	Gonzalez de Cademartori,Pedro Henrique
title	Natural weathering performance of three fast-growing Eucalypt woods
title_short	Natural weathering performance of three fast-growing Eucalypt woods
title_full	Natural weathering performance of three fast-growing Eucalypt woods
title_fullStr	Natural weathering performance of three fast-growing Eucalypt woods
title_full_unstemmed	Natural weathering performance of three fast-growing Eucalypt woods
title_sort	natural weathering performance of three fast-growing eucalypt woods
publisher	Universidad del Bío-Bío
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000400009
work_keys_str_mv	AT gonzalezdecademartoripedrohenrique naturalweatheringperformanceofthreefastgrowingeucalyptwoods AT missioandreluiz naturalweatheringperformanceofthreefastgrowingeucalyptwoods AT dufaumattosbruno naturalweatheringperformanceofthreefastgrowingeucalyptwoods AT gattodarcialberto naturalweatheringperformanceofthreefastgrowingeucalyptwoods
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Natural weathering performance of three fast-growing Eucalypt woods

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