Synthesis and characterization of polyarylacetylene for use in the monolithic vitreous carbon processing
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282014000500004&lng=en&nrm=iso&tlng=en http://hdl.handle.net/11449/130201 |
Resumo: | In this work, polyarylacetylene (PAA) prepolymer obtained from 1,4-diethynylbenzene was evaluated as polymeric precursor of monolithic vitreous carbon (MVC). The monomer 1,4-diethynylbenzene was synthesized and the PAA prepolymer was prepared with 13, 16 and 19 wt % of nickel catalyst. The best percentage of nickel catalyst considered was 13 wt %, due to the lower molecular weight and polydispersity index and higher carbon yield. The traditional production of MVC is obtained from phenolic and poly(furfuryl alcohol) resins, which require many hours to pyrolyze due to the large quantity of gases generated. Furthermore, the porosity is hard to control using these conventional resins. Polyarylacetylene releases little volatiles due to the polyaddition reaction and the aromatic rings in PAA chain also provide a high thermal stability, therefore the heat treatment could be faster without cracking the carbon material. This would also lower the cost of fabrication of MVC, in addition to the low porosity observed, making this polymer a good matrix for MVC. |
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Synthesis and characterization of polyarylacetylene for use in the monolithic vitreous carbon processingPolyarylacetylene1,4-diethynylbenzeneMonolithic vitreous carbonPorosityIn this work, polyarylacetylene (PAA) prepolymer obtained from 1,4-diethynylbenzene was evaluated as polymeric precursor of monolithic vitreous carbon (MVC). The monomer 1,4-diethynylbenzene was synthesized and the PAA prepolymer was prepared with 13, 16 and 19 wt % of nickel catalyst. The best percentage of nickel catalyst considered was 13 wt %, due to the lower molecular weight and polydispersity index and higher carbon yield. The traditional production of MVC is obtained from phenolic and poly(furfuryl alcohol) resins, which require many hours to pyrolyze due to the large quantity of gases generated. Furthermore, the porosity is hard to control using these conventional resins. Polyarylacetylene releases little volatiles due to the polyaddition reaction and the aromatic rings in PAA chain also provide a high thermal stability, therefore the heat treatment could be faster without cracking the carbon material. This would also lower the cost of fabrication of MVC, in addition to the low porosity observed, making this polymer a good matrix for MVC.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Universidade Estadual Paulista (UNESP), Faculdade de Engenharia de Guaratinguetá (FEG), Departamento de Materiais e Tecnologia, Guaratinguetá BR-12516410, SP, BrasilUniversity of Washington, Department of Materials Science and Engineering, Seattle, WA 98195 USAUniversidade Federal de São Paulo (UNIFESP), Instituto de Ciência e Tecnologia (ICT), São José dos Campos, SP, BrasilUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia de Guaratinguetá (FEG), Departamento de Materiais e Tecnologia, Guaratinguetá BR-12516410, SP, BrasilFAPESP: 2011/05908-5FAPESP: 2011/23480-2CNPq: 305478/2009-5CNPq: 303559/2012-8Associação Brasileira de PolímerosUniversidade Estadual Paulista (Unesp)University of WashingtonUniversidade Federal de São Paulo (UNIFESP)Oishi, Silvia Sizuka [UNESP]Botelho, Edson Cocchieri [UNESP]Luscombe, Christine KeikoRezende, Mirabel Cerqueira2015-11-03T15:30:12Z2015-11-03T15:30:12Z2014-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article541-546application/pdfhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282014000500004&lng=en&nrm=iso&tlng=enPolímeros: Ciência e Tecnologia. São Carlos: Associação Brasileira de Polímeros, v. 24, n. 5, p. 541-546, 2014.0104-1428http://hdl.handle.net/11449/13020110.1590/0104-1428.1623S0104-14282014000500004WOS:000344556100004S0104-14282014000500004.pdf43780783373436600000-0001-8338-4879Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPolímeros: Ciência e Tecnologia0.7000,244info:eu-repo/semantics/openAccess2023-12-02T06:18:12Zoai:repositorio.unesp.br:11449/130201Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-02T06:18:12Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Synthesis and characterization of polyarylacetylene for use in the monolithic vitreous carbon processing |
title |
Synthesis and characterization of polyarylacetylene for use in the monolithic vitreous carbon processing |
spellingShingle |
Synthesis and characterization of polyarylacetylene for use in the monolithic vitreous carbon processing Oishi, Silvia Sizuka [UNESP] Polyarylacetylene 1,4-diethynylbenzene Monolithic vitreous carbon Porosity |
title_short |
Synthesis and characterization of polyarylacetylene for use in the monolithic vitreous carbon processing |
title_full |
Synthesis and characterization of polyarylacetylene for use in the monolithic vitreous carbon processing |
title_fullStr |
Synthesis and characterization of polyarylacetylene for use in the monolithic vitreous carbon processing |
title_full_unstemmed |
Synthesis and characterization of polyarylacetylene for use in the monolithic vitreous carbon processing |
title_sort |
Synthesis and characterization of polyarylacetylene for use in the monolithic vitreous carbon processing |
author |
Oishi, Silvia Sizuka [UNESP] |
author_facet |
Oishi, Silvia Sizuka [UNESP] Botelho, Edson Cocchieri [UNESP] Luscombe, Christine Keiko Rezende, Mirabel Cerqueira |
author_role |
author |
author2 |
Botelho, Edson Cocchieri [UNESP] Luscombe, Christine Keiko Rezende, Mirabel Cerqueira |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) University of Washington Universidade Federal de São Paulo (UNIFESP) |
dc.contributor.author.fl_str_mv |
Oishi, Silvia Sizuka [UNESP] Botelho, Edson Cocchieri [UNESP] Luscombe, Christine Keiko Rezende, Mirabel Cerqueira |
dc.subject.por.fl_str_mv |
Polyarylacetylene 1,4-diethynylbenzene Monolithic vitreous carbon Porosity |
topic |
Polyarylacetylene 1,4-diethynylbenzene Monolithic vitreous carbon Porosity |
description |
In this work, polyarylacetylene (PAA) prepolymer obtained from 1,4-diethynylbenzene was evaluated as polymeric precursor of monolithic vitreous carbon (MVC). The monomer 1,4-diethynylbenzene was synthesized and the PAA prepolymer was prepared with 13, 16 and 19 wt % of nickel catalyst. The best percentage of nickel catalyst considered was 13 wt %, due to the lower molecular weight and polydispersity index and higher carbon yield. The traditional production of MVC is obtained from phenolic and poly(furfuryl alcohol) resins, which require many hours to pyrolyze due to the large quantity of gases generated. Furthermore, the porosity is hard to control using these conventional resins. Polyarylacetylene releases little volatiles due to the polyaddition reaction and the aromatic rings in PAA chain also provide a high thermal stability, therefore the heat treatment could be faster without cracking the carbon material. This would also lower the cost of fabrication of MVC, in addition to the low porosity observed, making this polymer a good matrix for MVC. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-01-01 2015-11-03T15:30:12Z 2015-11-03T15:30:12Z |
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.uri.fl_str_mv |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282014000500004&lng=en&nrm=iso&tlng=en Polímeros: Ciência e Tecnologia. São Carlos: Associação Brasileira de Polímeros, v. 24, n. 5, p. 541-546, 2014. 0104-1428 http://hdl.handle.net/11449/130201 10.1590/0104-1428.1623 S0104-14282014000500004 WOS:000344556100004 S0104-14282014000500004.pdf 4378078337343660 0000-0001-8338-4879 |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282014000500004&lng=en&nrm=iso&tlng=en http://hdl.handle.net/11449/130201 |
identifier_str_mv |
Polímeros: Ciência e Tecnologia. São Carlos: Associação Brasileira de Polímeros, v. 24, n. 5, p. 541-546, 2014. 0104-1428 10.1590/0104-1428.1623 S0104-14282014000500004 WOS:000344556100004 S0104-14282014000500004.pdf 4378078337343660 0000-0001-8338-4879 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Polímeros: Ciência e Tecnologia 0.700 0,244 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
541-546 application/pdf |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Polímeros |
publisher.none.fl_str_mv |
Associação Brasileira de Polímeros |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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