Desenvolvimento de materiais polit?rmicos empregando fen?is naturais provenientes do l?quido da casca da castanha de caju
Ano de defesa: | 2018 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | |
Tipo de documento: | Tese |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Pontif?cia Universidade Cat?lica do Rio Grande do Sul
|
Programa de Pós-Graduação: |
Programa de P?s-Gradua??o em Engenharia e Tecnologia de Materiais
|
Departamento: |
Escola Polit?cnica
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://tede2.pucrs.br/tede2/handle/tede/8240 |
Resumo: | Due to environmetal and social concerns about synthetic polymers, studies on the preparation of polymers based on renewable sources have been explored by academia and industry. In this context, the use of cashew industry residues rich in phenolic compounds, such as cashew nut shell liquid (CNSL) and its derivative, cardanol, in the synthesis of polymeric materials may be a less aggressive alternative to environment. This work aims to prepare polymeric materials using phenols from the CNSL. The influence of phenols in nanostructured polyaniline (PAni) synthesis were evaluated. Hybrid materials based on PAni doped with cardanol and derivatives of graphene, graphene oxide (GO) and reduced graphene oxide (rGO), were also prepared. In addition, the influence of cardanol and PAni doped with cardanol on the thermal properties of benzoxazine resins was investigated. The polymeric materials were characterized by FTIR, UV-vis, FESEM, TEM, XRD, TGA, DSC and four-point methodology for determination of electrical conductivity. From these results, it was found that cardanol and CNSL acted as primary dopants in the synthesis of conductive PAni (electrical conductivity in order 10-1 S.cm-1). CNSL acted as soft template and plasticizer for the conventional synthesis of nanofibers PAni doped with hydrochloric acid. The methodology developed for preparation of cardanol doped PAni combined with both GO and rGO was able to prepare conductive (electrical conductivity in order 100 S.cm-1) and nanostructured hybrid materials. Furthermore, cardanol and PAni doped with cardanol were incorporated into the benzoxazine matrix to form materials with thermal stability and crosslink density greater than those of the benzoxazine resin. |
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Basso, Nara Regina de Souzahttp://lattes.cnpq.br/9015401653501831http://lattes.cnpq.br/0145189302528855Gon?alves, Raiane Valenti2018-08-06T14:35:19Z2018-03-26http://tede2.pucrs.br/tede2/handle/tede/8240Due to environmetal and social concerns about synthetic polymers, studies on the preparation of polymers based on renewable sources have been explored by academia and industry. In this context, the use of cashew industry residues rich in phenolic compounds, such as cashew nut shell liquid (CNSL) and its derivative, cardanol, in the synthesis of polymeric materials may be a less aggressive alternative to environment. This work aims to prepare polymeric materials using phenols from the CNSL. The influence of phenols in nanostructured polyaniline (PAni) synthesis were evaluated. Hybrid materials based on PAni doped with cardanol and derivatives of graphene, graphene oxide (GO) and reduced graphene oxide (rGO), were also prepared. In addition, the influence of cardanol and PAni doped with cardanol on the thermal properties of benzoxazine resins was investigated. The polymeric materials were characterized by FTIR, UV-vis, FESEM, TEM, XRD, TGA, DSC and four-point methodology for determination of electrical conductivity. From these results, it was found that cardanol and CNSL acted as primary dopants in the synthesis of conductive PAni (electrical conductivity in order 10-1 S.cm-1). CNSL acted as soft template and plasticizer for the conventional synthesis of nanofibers PAni doped with hydrochloric acid. The methodology developed for preparation of cardanol doped PAni combined with both GO and rGO was able to prepare conductive (electrical conductivity in order 100 S.cm-1) and nanostructured hybrid materials. Furthermore, cardanol and PAni doped with cardanol were incorporated into the benzoxazine matrix to form materials with thermal stability and crosslink density greater than those of the benzoxazine resin.Devido ?s preocupa??es ambientais e sociais relacionadas aos pol?meros sint?ticos, os estudos sobre a prepara??o de pol?meros derivados de fontes renov?veis t?m sido explorados pela academia e ind?stria. Dentro desse contexto, o uso de res?duos da ind?stria do caju ricos em compostos fen?licos, tais como, o l?quido da casca da castanha de caju (LCC) e o seu derivado, o cardanol, na s?ntese de materiais polim?ricos pode ser uma alternativa menos agressiva ao meio ambiente. Este trabalho visa preparar materiais polim?ricos empregando fen?is provenientes do LCC. A influ?ncia da presen?a dos fen?is na s?ntese da polianilina (PAni) nanoestruturada foi avaliada. Materiais h?bridos baseados em PAni dopada com cardanol e derivados do grafeno, ?xido de grafeno (OG) e ?xido de grafeno reduzido (OGR), tamb?m foram preparados. Ainda, foi investigada a influ?ncia do cardanol e da PAni dopada com cardanol nas propriedades t?rmicas das resinas benzoxazinas. Os materiais polim?ricos foram caracterizados por FTIR, UV-vis, MEV-FEG, MET, DRX, TGA, DSC e metodologia de quatro pontas para determina??o de condutividade el?trica. A partir dos resultados, foi constatado que o cardanol e o LCC atuaram como dopantes prim?rios nas s?nteses de PAni condutiva (condutividade el?trica na ordem 10-1 S.cm-1). Al?m disso, o LCC atuou como soft template e plastificante para as s?nteses convencionais de nanofibras de PAni dopadas com ?cido clor?drico. A metodologia desenvolvida para o preparo de PAni dopada com cardanol combinada tanto com OG quanto com OGR foi capaz de preparar materiais h?bridos nanoestruturados e condutores (condutividade el?trica na ordem 100 S.cm-1). Ainda, cardanol e PAni dopada com cardanol foram incorporados a matriz de benzoxazina formando materiais com estabilidade t?rmica e densidade de reticula??o superiores ?quelas t?picas da resina benzoxazina.Submitted by PPG Engenharia e Tecnologia de Materiais (engenharia.pg.materiais@pucrs.br) on 2018-08-03T11:41:54Z No. of bitstreams: 1 Raiane Valenti Goncalves_Tese de doutorado.pdf: 4511385 bytes, checksum: ab531101c975ccd215f44d53f020cd71 (MD5)Approved for entry into archive by Sheila Dias (sheila.dias@pucrs.br) on 2018-08-06T13:49:06Z (GMT) No. of bitstreams: 1 Raiane Valenti Goncalves_Tese de doutorado.pdf: 4511385 bytes, checksum: ab531101c975ccd215f44d53f020cd71 (MD5)Made available in DSpace on 2018-08-06T14:35:19Z (GMT). No. of bitstreams: 1 Raiane Valenti Goncalves_Tese de doutorado.pdf: 4511385 bytes, checksum: ab531101c975ccd215f44d53f020cd71 (MD5) Previous issue date: 2018-03-26Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPESapplication/pdfhttp://tede2.pucrs.br:80/tede2/retrieve/172969/Raiane%20Valenti%20Goncalves_Tese%20de%20doutorado.pdf.jpgporPontif?cia Universidade Cat?lica do Rio Grande do SulPrograma de P?s-Gradua??o em Engenharia e Tecnologia de MateriaisPUCRSBrasilEscola Polit?cnicaL?quido da Casca da Castanha de CajuCardanolPolianilinaResina BenzoxazinaGrafenoCashew Nut Shell LiquidPolyanilineBenzoxazine ResinGrapheneENGENHARIASDesenvolvimento de materiais polit?rmicos empregando fen?is naturais provenientes do l?quido da casca da castanha de cajuinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisTrabalho n?o apresenta restri??o para publica??o-743271934421512012250050060045189710564848268252075167498588264571info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da PUC_RSinstname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSTHUMBNAILRaiane Valenti Goncalves_Tese de doutorado.pdf.jpgRaiane Valenti Goncalves_Tese de doutorado.pdf.jpgimage/jpeg5715http://tede2.pucrs.br/tede2/bitstream/tede/8240/4/Raiane+Valenti+Goncalves_Tese+de+doutorado.pdf.jpg4e7bd36480a77561105776c1ba66b669MD54TEXTRaiane Valenti Goncalves_Tese de doutorado.pdf.txtRaiane Valenti Goncalves_Tese de doutorado.pdf.txttext/plain217745http://tede2.pucrs.br/tede2/bitstream/tede/8240/3/Raiane+Valenti+Goncalves_Tese+de+doutorado.pdf.txt7f08109e4ae8cd2571d32833434b35c2MD53ORIGINALRaiane Valenti Goncalves_Tese de doutorado.pdfRaiane Valenti Goncalves_Tese de doutorado.pdfapplication/pdf4511385http://tede2.pucrs.br/tede2/bitstream/tede/8240/2/Raiane+Valenti+Goncalves_Tese+de+doutorado.pdfab531101c975ccd215f44d53f020cd71MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-8610http://tede2.pucrs.br/tede2/bitstream/tede/8240/1/license.txt5a9d6006225b368ef605ba16b4f6d1beMD51tede/82402018-08-06 12:00:48.059oai:tede2.pucrs.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede2.pucrs.br/tede2/PRIhttps://tede2.pucrs.br/oai/requestbiblioteca.central@pucrs.br||opendoar:2018-08-06T15:00:48Biblioteca Digital de Teses e Dissertações da PUC_RS - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false |
dc.title.por.fl_str_mv |
Desenvolvimento de materiais polit?rmicos empregando fen?is naturais provenientes do l?quido da casca da castanha de caju |
title |
Desenvolvimento de materiais polit?rmicos empregando fen?is naturais provenientes do l?quido da casca da castanha de caju |
spellingShingle |
Desenvolvimento de materiais polit?rmicos empregando fen?is naturais provenientes do l?quido da casca da castanha de caju Gon?alves, Raiane Valenti L?quido da Casca da Castanha de Caju Cardanol Polianilina Resina Benzoxazina Grafeno Cashew Nut Shell Liquid Polyaniline Benzoxazine Resin Graphene ENGENHARIAS |
title_short |
Desenvolvimento de materiais polit?rmicos empregando fen?is naturais provenientes do l?quido da casca da castanha de caju |
title_full |
Desenvolvimento de materiais polit?rmicos empregando fen?is naturais provenientes do l?quido da casca da castanha de caju |
title_fullStr |
Desenvolvimento de materiais polit?rmicos empregando fen?is naturais provenientes do l?quido da casca da castanha de caju |
title_full_unstemmed |
Desenvolvimento de materiais polit?rmicos empregando fen?is naturais provenientes do l?quido da casca da castanha de caju |
title_sort |
Desenvolvimento de materiais polit?rmicos empregando fen?is naturais provenientes do l?quido da casca da castanha de caju |
author |
Gon?alves, Raiane Valenti |
author_facet |
Gon?alves, Raiane Valenti |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Basso, Nara Regina de Souza |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9015401653501831 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0145189302528855 |
dc.contributor.author.fl_str_mv |
Gon?alves, Raiane Valenti |
contributor_str_mv |
Basso, Nara Regina de Souza |
dc.subject.por.fl_str_mv |
L?quido da Casca da Castanha de Caju Cardanol Polianilina Resina Benzoxazina Grafeno |
topic |
L?quido da Casca da Castanha de Caju Cardanol Polianilina Resina Benzoxazina Grafeno Cashew Nut Shell Liquid Polyaniline Benzoxazine Resin Graphene ENGENHARIAS |
dc.subject.eng.fl_str_mv |
Cashew Nut Shell Liquid Polyaniline Benzoxazine Resin Graphene |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS |
description |
Due to environmetal and social concerns about synthetic polymers, studies on the preparation of polymers based on renewable sources have been explored by academia and industry. In this context, the use of cashew industry residues rich in phenolic compounds, such as cashew nut shell liquid (CNSL) and its derivative, cardanol, in the synthesis of polymeric materials may be a less aggressive alternative to environment. This work aims to prepare polymeric materials using phenols from the CNSL. The influence of phenols in nanostructured polyaniline (PAni) synthesis were evaluated. Hybrid materials based on PAni doped with cardanol and derivatives of graphene, graphene oxide (GO) and reduced graphene oxide (rGO), were also prepared. In addition, the influence of cardanol and PAni doped with cardanol on the thermal properties of benzoxazine resins was investigated. The polymeric materials were characterized by FTIR, UV-vis, FESEM, TEM, XRD, TGA, DSC and four-point methodology for determination of electrical conductivity. From these results, it was found that cardanol and CNSL acted as primary dopants in the synthesis of conductive PAni (electrical conductivity in order 10-1 S.cm-1). CNSL acted as soft template and plasticizer for the conventional synthesis of nanofibers PAni doped with hydrochloric acid. The methodology developed for preparation of cardanol doped PAni combined with both GO and rGO was able to prepare conductive (electrical conductivity in order 100 S.cm-1) and nanostructured hybrid materials. Furthermore, cardanol and PAni doped with cardanol were incorporated into the benzoxazine matrix to form materials with thermal stability and crosslink density greater than those of the benzoxazine resin. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-08-06T14:35:19Z |
dc.date.issued.fl_str_mv |
2018-03-26 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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publishedVersion |
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http://tede2.pucrs.br/tede2/handle/tede/8240 |
url |
http://tede2.pucrs.br/tede2/handle/tede/8240 |
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por |
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por |
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-7432719344215120122 |
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500 500 600 |
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4518971056484826825 |
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2075167498588264571 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Pontif?cia Universidade Cat?lica do Rio Grande do Sul |
dc.publisher.program.fl_str_mv |
Programa de P?s-Gradua??o em Engenharia e Tecnologia de Materiais |
dc.publisher.initials.fl_str_mv |
PUCRS |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Escola Polit?cnica |
publisher.none.fl_str_mv |
Pontif?cia Universidade Cat?lica do Rio Grande do Sul |
dc.source.none.fl_str_mv |
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