Microwave-assisted solvothermal: An efficient and new method to obtain hydrophobic wood surfaces

Abstract: The objective of this work was to form a hydrophobic surface in a highly porous wood by coating and incorporating TiO2 micro/nano structures through the microwave-assisted solvotermal method, without need any pre- or post-modification of the wood substrate, using low temperatures and short...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Zanatta,Paula, Missio,André Luiz, Lazarotto,Marília, Cava,Sérgio da Silva, Jardim,Pedro Lovato Gomes, Gatto,Darci Alberto, Moreira,Mário Lúcio
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2018
Materias:	Nanoparticles Pinus elliotti wettability wood modification wood technology.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000400611
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-221X2018000400611
record_format	dspace
spelling	oai:scielo:S0718-221X20180004006112019-02-14Microwave-assisted solvothermal: An efficient and new method to obtain hydrophobic wood surfacesZanatta,PaulaMissio,André LuizLazarotto,MaríliaCava,Sérgio da SilvaJardim,Pedro Lovato GomesGatto,Darci AlbertoMoreira,Mário Lúcio Nanoparticles Pinus elliotti wettability wood modification wood technology. Abstract: The objective of this work was to form a hydrophobic surface in a highly porous wood by coating and incorporating TiO2 micro/nano structures through the microwave-assisted solvotermal method, without need any pre- or post-modification of the wood substrate, using low temperatures and short times. The behavior and morphology of the TiO2-treated surfaces was characterized using scanning electron microscopy (SEM), while the elemental composition was determined via energy-dispersive X-ray spectroscopy and X-ray diffraction analysis. The results indicated that the crystallization of the TiO2 anatase phase was efficient and fully coated the wood surface during the solvothermal process. The treated wood contained TiO2 particles agglomerate with an average diameter of 200 nm that also allowed to coat an abundant fraction of tracheids cell walls. When investigated through X-ray spectroscopy-mapping, the element titanium appeared abundantly throughout the wood. After TiO2 growth in wood through the microwave-assisted solvotermal method, a roughness at the micro/nano scales structures was created on the wood surface, originating an increase in the contact angle up to 137°, which characterizes the appearance of a hydrophobic surface. The TiO2-treated wood demonstrated 85% of water absorption after 400 h of immersion, while untreated wood reached 160%, suggesting that the microwave-assisted solvotermal process promotes a delay in the progression of water absorption. This feature can improve the dimensional stability of wood, contributing to the increase of its durability and applications.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.20 n.4 20182018-10-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000400611en10.4067/S0718-221X2018005004801
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Nanoparticles Pinus elliotti wettability wood modification wood technology.
spellingShingle	Nanoparticles Pinus elliotti wettability wood modification wood technology. Zanatta,Paula Missio,André Luiz Lazarotto,Marília Cava,Sérgio da Silva Jardim,Pedro Lovato Gomes Gatto,Darci Alberto Moreira,Mário Lúcio Microwave-assisted solvothermal: An efficient and new method to obtain hydrophobic wood surfaces
description	Abstract: The objective of this work was to form a hydrophobic surface in a highly porous wood by coating and incorporating TiO2 micro/nano structures through the microwave-assisted solvotermal method, without need any pre- or post-modification of the wood substrate, using low temperatures and short times. The behavior and morphology of the TiO2-treated surfaces was characterized using scanning electron microscopy (SEM), while the elemental composition was determined via energy-dispersive X-ray spectroscopy and X-ray diffraction analysis. The results indicated that the crystallization of the TiO2 anatase phase was efficient and fully coated the wood surface during the solvothermal process. The treated wood contained TiO2 particles agglomerate with an average diameter of 200 nm that also allowed to coat an abundant fraction of tracheids cell walls. When investigated through X-ray spectroscopy-mapping, the element titanium appeared abundantly throughout the wood. After TiO2 growth in wood through the microwave-assisted solvotermal method, a roughness at the micro/nano scales structures was created on the wood surface, originating an increase in the contact angle up to 137°, which characterizes the appearance of a hydrophobic surface. The TiO2-treated wood demonstrated 85% of water absorption after 400 h of immersion, while untreated wood reached 160%, suggesting that the microwave-assisted solvotermal process promotes a delay in the progression of water absorption. This feature can improve the dimensional stability of wood, contributing to the increase of its durability and applications.
author	Zanatta,Paula Missio,André Luiz Lazarotto,Marília Cava,Sérgio da Silva Jardim,Pedro Lovato Gomes Gatto,Darci Alberto Moreira,Mário Lúcio
author_facet	Zanatta,Paula Missio,André Luiz Lazarotto,Marília Cava,Sérgio da Silva Jardim,Pedro Lovato Gomes Gatto,Darci Alberto Moreira,Mário Lúcio
author_sort	Zanatta,Paula
title	Microwave-assisted solvothermal: An efficient and new method to obtain hydrophobic wood surfaces
title_short	Microwave-assisted solvothermal: An efficient and new method to obtain hydrophobic wood surfaces
title_full	Microwave-assisted solvothermal: An efficient and new method to obtain hydrophobic wood surfaces
title_fullStr	Microwave-assisted solvothermal: An efficient and new method to obtain hydrophobic wood surfaces
title_full_unstemmed	Microwave-assisted solvothermal: An efficient and new method to obtain hydrophobic wood surfaces
title_sort	microwave-assisted solvothermal: an efficient and new method to obtain hydrophobic wood surfaces
publisher	Universidad del Bío-Bío
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000400611
work_keys_str_mv	AT zanattapaula microwaveassistedsolvothermalanefficientandnewmethodtoobtainhydrophobicwoodsurfaces AT missioandreluiz microwaveassistedsolvothermalanefficientandnewmethodtoobtainhydrophobicwoodsurfaces AT lazarottomarilia microwaveassistedsolvothermalanefficientandnewmethodtoobtainhydrophobicwoodsurfaces AT cavasergiodasilva microwaveassistedsolvothermalanefficientandnewmethodtoobtainhydrophobicwoodsurfaces AT jardimpedrolovatogomes microwaveassistedsolvothermalanefficientandnewmethodtoobtainhydrophobicwoodsurfaces AT gattodarcialberto microwaveassistedsolvothermalanefficientandnewmethodtoobtainhydrophobicwoodsurfaces AT moreiramariolucio microwaveassistedsolvothermalanefficientandnewmethodtoobtainhydrophobicwoodsurfaces
_version_	1714202661287362560

Microwave-assisted solvothermal: An efficient and new method to obtain hydrophobic wood surfaces

Ejemplares similares