Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials.
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/5025 |
Resumo: | Bamboo admittedly and engineering material widely used for buildings in several countries. However, lack of good interfacial adhesion, low melting point, and poor resistance towards moisture make the use of natural fiber reinforced composites less attractive. The aim of this work was esterify the refined pulp of bamboo came from kraft industrial pulping, previously treated with sodium hydroxid and organic solvents for the production of less hydrophilic materials. In order to verify the occurrence of reaction, assays of spectroscopy in the region of IV, thermogravimetry, elementary analysis and water absorption were performed. After the reaction, the infrared spectra presented bands related to the ester and carboxylic acid groups, evidencing the exchange of OH groups for ester groups. This test also shows a decrease in the absorbance ratio due to the presence of ester group causing a reduction in the crystallinity index of the sample. These results were proven by the gain in the value of carbon content after the elementary analysis. In the water absorption test, the pulp modified with dianhydride showed the lowest level as compared to other samples. The thermogravimetric analysis also showed a decrease in initial temperature of pulp degradation, as well as decrease in the moisture, facts that proved the efficiency in the modification using dianhidrido BTDA. |
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Guimarães Júnior, MárioNovack, Kátia MonteiroBotaro, Vagner Roberto2015-04-13T18:51:39Z2015-04-13T18:51:39Z2013GUIMARÃES JÚNIOR, M.; NOVACK, K. M.; BOTARO, V. R. Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. Revista Latinoamericana de Metalurgia y Materiales, v. 34, n. 2, p. 196-208, 2014. Disponível em: <http://www.rlmm.org/ojs/index.php/rlmm/article/view/482>. Acesso em: 02 fev. 2015.0255-6952http://www.repositorio.ufop.br/handle/123456789/5025Bamboo admittedly and engineering material widely used for buildings in several countries. However, lack of good interfacial adhesion, low melting point, and poor resistance towards moisture make the use of natural fiber reinforced composites less attractive. The aim of this work was esterify the refined pulp of bamboo came from kraft industrial pulping, previously treated with sodium hydroxid and organic solvents for the production of less hydrophilic materials. In order to verify the occurrence of reaction, assays of spectroscopy in the region of IV, thermogravimetry, elementary analysis and water absorption were performed. After the reaction, the infrared spectra presented bands related to the ester and carboxylic acid groups, evidencing the exchange of OH groups for ester groups. This test also shows a decrease in the absorbance ratio due to the presence of ester group causing a reduction in the crystallinity index of the sample. These results were proven by the gain in the value of carbon content after the elementary analysis. In the water absorption test, the pulp modified with dianhydride showed the lowest level as compared to other samples. The thermogravimetric analysis also showed a decrease in initial temperature of pulp degradation, as well as decrease in the moisture, facts that proved the efficiency in the modification using dianhidrido BTDA.El objetivo de este trabajo fue esterificar pulpa refinada procedente de bambú industrial kraft, pre-tratados con hidróxido de sodio y disolventes orgánicos para producir materiales menos hidrofílicos. Con el fin de verificar la aparición de reacción de esterificación, espectroscopia infrarroja, análisis termogravimétrica, análisis elemental y absorción de agua fueron realizadas. Después de la reacción, el espectro infrarrojo mostró bandas relacionadas con los grupos éster y grupos de ácido carboxílico, que muestra el intercambio de grupos OH por grupos éster. Esta pruebla también mostró una proporción reducida de la absorbancia debido a la presencia del grupo éster causando una reducción en el índice de cristalinidad de la muestra. Estos resultados se corroboraron por un aumento en la cantidad de contenido de carbono después del análisis elemental. En la prueba de absorción de agua, la pulpa modificada con dianhídrido mostro el nivel más bajo en comparación con otras muestras. El análisis termogravimétrica mostró también una reducción en la temperatura de inicio de la degradación de pulpa refinada, así como una disminución en el contenido de humedad, los eventos que demostraron La eficacia de la modificación utilizando BTDA dianhídrido.Polymeric matricesBamboo pulpChemical treatmentMateriales compuestos poliméricosPulpa de bambúBamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials.Pulpa de bambú tratada con NaOH y dianhídrido benzofenona tetracarboxílico como refuerzo de nuevos materiales poliméricos.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleLos autores conservan los derechos de distribuir copias del trabajo publicado para fines docentes o dentro de su institución de afiliación. Fonte: Revista Latinoamericana de Metalurgia y Materiales <http://www.rlmm.org/ojs/index.php/rlmm/about/submissions#copyrightNotice>. Acesso em: 01 mar. 2015.info:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-82636http://www.repositorio.ufop.br/bitstream/123456789/5025/2/license.txtc2ffdd99e58acf69202dff00d361f23aMD52ORIGINALARTIGO_BambooPulpTreated.pdfARTIGO_BambooPulpTreated.pdfapplication/pdf727076http://www.repositorio.ufop.br/bitstream/123456789/5025/1/ARTIGO_BambooPulpTreated.pdf44333397a08d16f907b67d047b67565dMD51123456789/50252019-07-09 12:40:33.921oai:localhost: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Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-07-09T16:40:33Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. |
dc.title.alternative.pt_BR.fl_str_mv |
Pulpa de bambú tratada con NaOH y dianhídrido benzofenona tetracarboxílico como refuerzo de nuevos materiales poliméricos. |
title |
Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. |
spellingShingle |
Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. Guimarães Júnior, Mário Polymeric matrices Bamboo pulp Chemical treatment Materiales compuestos poliméricos Pulpa de bambú |
title_short |
Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. |
title_full |
Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. |
title_fullStr |
Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. |
title_full_unstemmed |
Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. |
title_sort |
Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. |
author |
Guimarães Júnior, Mário |
author_facet |
Guimarães Júnior, Mário Novack, Kátia Monteiro Botaro, Vagner Roberto |
author_role |
author |
author2 |
Novack, Kátia Monteiro Botaro, Vagner Roberto |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Guimarães Júnior, Mário Novack, Kátia Monteiro Botaro, Vagner Roberto |
dc.subject.por.fl_str_mv |
Polymeric matrices Bamboo pulp Chemical treatment Materiales compuestos poliméricos Pulpa de bambú |
topic |
Polymeric matrices Bamboo pulp Chemical treatment Materiales compuestos poliméricos Pulpa de bambú |
description |
Bamboo admittedly and engineering material widely used for buildings in several countries. However, lack of good interfacial adhesion, low melting point, and poor resistance towards moisture make the use of natural fiber reinforced composites less attractive. The aim of this work was esterify the refined pulp of bamboo came from kraft industrial pulping, previously treated with sodium hydroxid and organic solvents for the production of less hydrophilic materials. In order to verify the occurrence of reaction, assays of spectroscopy in the region of IV, thermogravimetry, elementary analysis and water absorption were performed. After the reaction, the infrared spectra presented bands related to the ester and carboxylic acid groups, evidencing the exchange of OH groups for ester groups. This test also shows a decrease in the absorbance ratio due to the presence of ester group causing a reduction in the crystallinity index of the sample. These results were proven by the gain in the value of carbon content after the elementary analysis. In the water absorption test, the pulp modified with dianhydride showed the lowest level as compared to other samples. The thermogravimetric analysis also showed a decrease in initial temperature of pulp degradation, as well as decrease in the moisture, facts that proved the efficiency in the modification using dianhidrido BTDA. |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013 |
dc.date.accessioned.fl_str_mv |
2015-04-13T18:51:39Z |
dc.date.available.fl_str_mv |
2015-04-13T18:51:39Z |
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.citation.fl_str_mv |
GUIMARÃES JÚNIOR, M.; NOVACK, K. M.; BOTARO, V. R. Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. Revista Latinoamericana de Metalurgia y Materiales, v. 34, n. 2, p. 196-208, 2014. Disponível em: <http://www.rlmm.org/ojs/index.php/rlmm/article/view/482>. Acesso em: 02 fev. 2015. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/5025 |
dc.identifier.issn.none.fl_str_mv |
0255-6952 |
identifier_str_mv |
GUIMARÃES JÚNIOR, M.; NOVACK, K. M.; BOTARO, V. R. Bamboo pulp treated with NaOH and benzophenone tetracarboxylic dianhydride as reinforcement of new polymerics materials. Revista Latinoamericana de Metalurgia y Materiales, v. 34, n. 2, p. 196-208, 2014. Disponível em: <http://www.rlmm.org/ojs/index.php/rlmm/article/view/482>. Acesso em: 02 fev. 2015. 0255-6952 |
url |
http://www.repositorio.ufop.br/handle/123456789/5025 |
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eng |
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eng |
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