Propriedades tecnológicas de madeiras do gênero eucalyptus submetida a termorretificação em óleo vegetal
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/8764 |
Resumo: | This study aims to evaluate the effect of thermal treatment in vegetable oil in physical, mechanical, chemical and surface property of the wooden whose two species of the genus Eucalyptus. Initially, we selected six trees, three of which belong for Eucalyptus cloeziana F. Muell species and the others to the Eucalyptus grandis Hill ex Maiden, which gave surce to the samples of physical and mechanical tests. Perform were 20 treatments distributed between the two species, three times (2, 4 and 6 hours) and three temperatures (160, 190 and 220°C), more the control treatments. To the termorretificação was used oil bath laboratory and for drying of the samples, we used a forced circulating air kiln. The analyzes physical evaluated were weight change, equilibrium moisture content, density and hygroscopicity of wood. In mechanical tests was evaluated static and dynamic bending and Janka hardness. Quantity were colorimetric changes, both on the surface and in the center of the parts and the chemical analysis was qualitative lye valuated by infrared spectroscopy (ATR-IR). The results showed that the process of thermal treatment changed signifivantly the physical properties and is the most severe treatment (220°C) the greatest changes; such changes have incriased dimensional stability and decreased hygroscopicity of wood. The modulus of rupture and Janka hardness decreased after thermal treatment application, alredy the modulus of elasticity hadn´t change. The colorimetric provided the color homogenization, in addition to providing a tropical tone treated wood, benefiting its application in aesthetic purposes. Through the technique of ATR - IR was possible to identify the main chemical elements changed by process of thermal treatment as hemicellulose, cellulose, lignin and extractives, which were the basis for the explanation of the changes occurring in the wood. In general, the process thermal treatment vegetable oil applied to the Eucalyptus grandis and Eucalyptus cloeziana caused significant modifications, which could provide the use of wood treated in environments unsuitable prior to its use. |
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2015-12-012015-12-012015-02-24CONTE, Bruno. TECHNOLOGICAL PROPERTIES OF WOOD GENUS Eucalyptus SUBMITTED TO HEAT TREATMENT IN VEGETABLE OIL. 2015. 122 f. Dissertação (Mestrado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2015.http://repositorio.ufsm.br/handle/1/8764This study aims to evaluate the effect of thermal treatment in vegetable oil in physical, mechanical, chemical and surface property of the wooden whose two species of the genus Eucalyptus. Initially, we selected six trees, three of which belong for Eucalyptus cloeziana F. Muell species and the others to the Eucalyptus grandis Hill ex Maiden, which gave surce to the samples of physical and mechanical tests. Perform were 20 treatments distributed between the two species, three times (2, 4 and 6 hours) and three temperatures (160, 190 and 220°C), more the control treatments. To the termorretificação was used oil bath laboratory and for drying of the samples, we used a forced circulating air kiln. The analyzes physical evaluated were weight change, equilibrium moisture content, density and hygroscopicity of wood. In mechanical tests was evaluated static and dynamic bending and Janka hardness. Quantity were colorimetric changes, both on the surface and in the center of the parts and the chemical analysis was qualitative lye valuated by infrared spectroscopy (ATR-IR). The results showed that the process of thermal treatment changed signifivantly the physical properties and is the most severe treatment (220°C) the greatest changes; such changes have incriased dimensional stability and decreased hygroscopicity of wood. The modulus of rupture and Janka hardness decreased after thermal treatment application, alredy the modulus of elasticity hadn´t change. The colorimetric provided the color homogenization, in addition to providing a tropical tone treated wood, benefiting its application in aesthetic purposes. Through the technique of ATR - IR was possible to identify the main chemical elements changed by process of thermal treatment as hemicellulose, cellulose, lignin and extractives, which were the basis for the explanation of the changes occurring in the wood. In general, the process thermal treatment vegetable oil applied to the Eucalyptus grandis and Eucalyptus cloeziana caused significant modifications, which could provide the use of wood treated in environments unsuitable prior to its use.O presente estudo teve por objetivo avaliar o efeito da termorretificação em óleo vegetal nas propriedades físicas, mecânicas, químicas e superficiais da madeira de duas espécies do gênero Eucalyptus. Inicialmente foram selecionadas seis árvores, das quais três são referentes a espécie Eucalyptus cloeziana F. Muell e as demais de Eucalyptus grandis Hill ex Maiden, as quais deram origem aos corpos de prova para ensaios físicos e mecânicos. Foram realizados 20 tratamentos, distribuídos entre as duas espécies, três tempos (2, 4 e 6 horas) e três temperaturas (160, 190 e 220ºC), mais os tratamentos controle. Para a realização da termorretificação foi utilizado um banho de óleo laboratorial e, para a cura dos corpos de prova, utilizou-se uma estufa de circulação de ar forçada. As análises físicas avaliadas foram: a variação de massa, o teor de umidade de equilíbrio, a massa específica e higroscopicidade a da madeira. Nos ensaios mecânicos avaliou-se a flexão estática, flexão dinâmica e dureza Janka. Quantificou-se as mudanças colorimétricas, tanto na superfície, quanto no centro das peças e a análise química foi avaliada qualitativamente por espectroscopia no infravermelho (ATR-IR). Os resultados mostraram que o processo de termorretificação alterou significativamente as propriedades físicas, sendo nos tratamentos mais severos (220ºC) as maiores modificações; tais alterações aumentaram a estabilidade dimensional e diminuíram a higroscopicidade da madeira. O módulo de ruptura e a dureza Janka diminuíram após a aplicação dos tratamentos de termorretificação, já no módulo de elasticidade não houve alteração. As alterações colorimétricas proporcionaram a homogeneização da cor, além de conceder um tom marrom a madeira tratada, beneficiando sua aplicação em fins estéticos. Através da técnica de ATR IR foi possível identificar os principais elementos químicos alterados pelo processo de termorretificação, como hemiceluloses, celulose, lignina e extrativos, dos quais serviram de base para a explicação das modificações ocorridas na madeira. De modo geral, o processo de termorretificação em óleo vegetal aplicado à madeira de Eucalyptus cloeziana e Eucalyptus grandis ocasionou modificações relevantes, as quais, podem proporcionar o emprego da madeira tratada em ambientes antes impróprias ao seu uso.application/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em Engenharia FlorestalUFSMBRRecursos Florestais e Engenharia FlorestalTratamento térmicoÓleo de sojaSuperfície da madeiraPropriedades físicasPropriedades mecânicasThermal treatmentsSoybean oilWood surfacePhysical propertiesMechanical propertiesCNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTALPropriedades tecnológicas de madeiras do gênero eucalyptus submetida a termorretificação em óleo vegetalTechnological properties of wood genus eucalyptus submitted to heat treatment in vegetable oilinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisGatto, Darci Albertohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4777721A7Eleoterio, Jackson Robertohttp://lattes.cnpq.br/8113619403351436Denardi, Lucianohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4760086U2http://lattes.cnpq.br/3412073095230340Conte, Bruno5002000000034003003003005009a7bf571-38c4-49bd-9c8b-8b343bded5feaf769170-b35d-4475-b5a7-6355cefb1f56e8950422-96b0-4611-9281-0bcec436069fc01f2a74-b9fe-4caa-8f9e-d2a2bc4d1910info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALCONTE, BRUNO.pdfapplication/pdf2686897http://repositorio.ufsm.br/bitstream/1/8764/1/CONTE%2c%20BRUNO.pdf8d349beac80d19bb06433b1efe551042MD51TEXTCONTE, BRUNO.pdf.txtCONTE, BRUNO.pdf.txtExtracted texttext/plain211435http://repositorio.ufsm.br/bitstream/1/8764/2/CONTE%2c%20BRUNO.pdf.txt8590a1f685c1debb4bb39897beaeb409MD52THUMBNAILCONTE, BRUNO.pdf.jpgCONTE, BRUNO.pdf.jpgIM Thumbnailimage/jpeg4893http://repositorio.ufsm.br/bitstream/1/8764/3/CONTE%2c%20BRUNO.pdf.jpgc80153e787840e91719ff94e1c311defMD531/87642022-04-06 15:01:26.181oai:repositorio.ufsm.br:1/8764Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-04-06T18:01:26Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Propriedades tecnológicas de madeiras do gênero eucalyptus submetida a termorretificação em óleo vegetal |
dc.title.alternative.eng.fl_str_mv |
Technological properties of wood genus eucalyptus submitted to heat treatment in vegetable oil |
title |
Propriedades tecnológicas de madeiras do gênero eucalyptus submetida a termorretificação em óleo vegetal |
spellingShingle |
Propriedades tecnológicas de madeiras do gênero eucalyptus submetida a termorretificação em óleo vegetal Conte, Bruno Tratamento térmico Óleo de soja Superfície da madeira Propriedades físicas Propriedades mecânicas Thermal treatments Soybean oil Wood surface Physical properties Mechanical properties CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
title_short |
Propriedades tecnológicas de madeiras do gênero eucalyptus submetida a termorretificação em óleo vegetal |
title_full |
Propriedades tecnológicas de madeiras do gênero eucalyptus submetida a termorretificação em óleo vegetal |
title_fullStr |
Propriedades tecnológicas de madeiras do gênero eucalyptus submetida a termorretificação em óleo vegetal |
title_full_unstemmed |
Propriedades tecnológicas de madeiras do gênero eucalyptus submetida a termorretificação em óleo vegetal |
title_sort |
Propriedades tecnológicas de madeiras do gênero eucalyptus submetida a termorretificação em óleo vegetal |
author |
Conte, Bruno |
author_facet |
Conte, Bruno |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Gatto, Darci Alberto |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4777721A7 |
dc.contributor.referee1.fl_str_mv |
Eleoterio, Jackson Roberto |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/8113619403351436 |
dc.contributor.referee2.fl_str_mv |
Denardi, Luciano |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4760086U2 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/3412073095230340 |
dc.contributor.author.fl_str_mv |
Conte, Bruno |
contributor_str_mv |
Gatto, Darci Alberto Eleoterio, Jackson Roberto Denardi, Luciano |
dc.subject.por.fl_str_mv |
Tratamento térmico Óleo de soja Superfície da madeira Propriedades físicas Propriedades mecânicas |
topic |
Tratamento térmico Óleo de soja Superfície da madeira Propriedades físicas Propriedades mecânicas Thermal treatments Soybean oil Wood surface Physical properties Mechanical properties CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
dc.subject.eng.fl_str_mv |
Thermal treatments Soybean oil Wood surface Physical properties Mechanical properties |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
description |
This study aims to evaluate the effect of thermal treatment in vegetable oil in physical, mechanical, chemical and surface property of the wooden whose two species of the genus Eucalyptus. Initially, we selected six trees, three of which belong for Eucalyptus cloeziana F. Muell species and the others to the Eucalyptus grandis Hill ex Maiden, which gave surce to the samples of physical and mechanical tests. Perform were 20 treatments distributed between the two species, three times (2, 4 and 6 hours) and three temperatures (160, 190 and 220°C), more the control treatments. To the termorretificação was used oil bath laboratory and for drying of the samples, we used a forced circulating air kiln. The analyzes physical evaluated were weight change, equilibrium moisture content, density and hygroscopicity of wood. In mechanical tests was evaluated static and dynamic bending and Janka hardness. Quantity were colorimetric changes, both on the surface and in the center of the parts and the chemical analysis was qualitative lye valuated by infrared spectroscopy (ATR-IR). The results showed that the process of thermal treatment changed signifivantly the physical properties and is the most severe treatment (220°C) the greatest changes; such changes have incriased dimensional stability and decreased hygroscopicity of wood. The modulus of rupture and Janka hardness decreased after thermal treatment application, alredy the modulus of elasticity hadn´t change. The colorimetric provided the color homogenization, in addition to providing a tropical tone treated wood, benefiting its application in aesthetic purposes. Through the technique of ATR - IR was possible to identify the main chemical elements changed by process of thermal treatment as hemicellulose, cellulose, lignin and extractives, which were the basis for the explanation of the changes occurring in the wood. In general, the process thermal treatment vegetable oil applied to the Eucalyptus grandis and Eucalyptus cloeziana caused significant modifications, which could provide the use of wood treated in environments unsuitable prior to its use. |
publishDate |
2015 |
dc.date.accessioned.fl_str_mv |
2015-12-01 |
dc.date.available.fl_str_mv |
2015-12-01 |
dc.date.issued.fl_str_mv |
2015-02-24 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
CONTE, Bruno. TECHNOLOGICAL PROPERTIES OF WOOD GENUS Eucalyptus SUBMITTED TO HEAT TREATMENT IN VEGETABLE OIL. 2015. 122 f. Dissertação (Mestrado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2015. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/8764 |
identifier_str_mv |
CONTE, Bruno. TECHNOLOGICAL PROPERTIES OF WOOD GENUS Eucalyptus SUBMITTED TO HEAT TREATMENT IN VEGETABLE OIL. 2015. 122 f. Dissertação (Mestrado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2015. |
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http://repositorio.ufsm.br/handle/1/8764 |
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UFSM |
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Recursos Florestais e Engenharia Florestal |
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Universidade Federal de Santa Maria |
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