Modifica??o da opacidade de copol?mero heterof?sico de polipropileno

Detalhes bibliográficos
Ano de defesa: 2019
Autor(a) principal: Stocker, Mariele Kaipers lattes
Orientador(a): Basso, Nara Regina de Souza lattes
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
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:
Copol?mero Heterof?sico de Eteno-Propeno (EPR)
Graftiza??o
Itaconato de S?dio
Agente Nucleante
Palavras-chave em Inglês:
Heterophasic Copolymer of Ethene-Propene (EPR)
Grafting
Sodium Itaconate
Nucleating Agent
Área do conhecimento CNPq:
ENGENHARIAS
Link de acesso: http://tede2.pucrs.br/tede2/handle/tede/8721
Resumo: Heterophasic copolymers, or impact copolymers are obtained in sequential reactors, in which the polypropylene (PP) is obtained in the first reactor as matrix and the rubber phase of ethene-propene (EPR) is obtained in the second reactor. The rubber phase provides great impact properties to the material, but it makes it more opaque when compared to PP homopolymer. The opacity reduction of impact copolymers is a desired property for the application in rigid and flexible packaging. The objective of this study is to test different methodologies for modifying the crystallization process and rubber fraction of the heterophasic copolymer to achieve opacity reduction. The polymer provided by Braskem S.A used in this study has a flow rate of 26 g/min (230?C/2,16Kg), density of 0,900g/cm3 and average opacity of 90% for the commercial product. The processes studied to obtain opacity reduction were: a) Grafting of itaconic acid in the polymer chain through reactive extrusion; b) Neutralization with sodium hydroxide of the polymer grafted with itaconic acid to obtain the sodium itaconate salt grafted in the polymer matrix; c) Dispersion of the synthetized sodium itaconate salt as a nucleating agent. The techniques used for characterization of the materials were: DSC, MOLP, AFM, FTIR, RMN, XRF, Haze Percent and DMA. The neutralization process of grafted itaconic acid gave the material opacity results of 42%, which means an opacity reduction of 53% comparing to the commercial product.
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spelling Basso, Nara Regina de Souzahttp://lattes.cnpq.br/9015401653501831http://lattes.cnpq.br/9195432355645221Stocker, Mariele Kaipers2019-06-17T11:37:27Z2019-03-29http://tede2.pucrs.br/tede2/handle/tede/8721Heterophasic copolymers, or impact copolymers are obtained in sequential reactors, in which the polypropylene (PP) is obtained in the first reactor as matrix and the rubber phase of ethene-propene (EPR) is obtained in the second reactor. The rubber phase provides great impact properties to the material, but it makes it more opaque when compared to PP homopolymer. The opacity reduction of impact copolymers is a desired property for the application in rigid and flexible packaging. The objective of this study is to test different methodologies for modifying the crystallization process and rubber fraction of the heterophasic copolymer to achieve opacity reduction. The polymer provided by Braskem S.A used in this study has a flow rate of 26 g/min (230?C/2,16Kg), density of 0,900g/cm3 and average opacity of 90% for the commercial product. The processes studied to obtain opacity reduction were: a) Grafting of itaconic acid in the polymer chain through reactive extrusion; b) Neutralization with sodium hydroxide of the polymer grafted with itaconic acid to obtain the sodium itaconate salt grafted in the polymer matrix; c) Dispersion of the synthetized sodium itaconate salt as a nucleating agent. The techniques used for characterization of the materials were: DSC, MOLP, AFM, FTIR, RMN, XRF, Haze Percent and DMA. The neutralization process of grafted itaconic acid gave the material opacity results of 42%, which means an opacity reduction of 53% comparing to the commercial product.Os copol?meros heterof?sicos, ou copol?meros de impacto s?o obtidos em reatores sequenciais, em que no primeiro reator se obt?m o polipropileno (PP) como matriz e no segundo reator obt?m-se um copol?mero de eteno-propeno, a fase borracha (EPR). A fase borracha proporciona ao material ?timas propriedades de impacto, mas o torna mais opaco quando comparado ao PP homopol?mero. A diminui??o da opacidade dos copol?meros de impacto ? uma propriedade desejada para a aplica??o em embalagens r?gidas e flex?veis. Este estudo tem por objetivo testar diferentes metodologias para modifica??o do processo de cristaliza??o e da morfologia da fra??o borracha do copol?mero de heterof?sico para obter diminui??o de sua opacidade. O pol?mero fornecido pela Braskem S.A que foi utilizado neste trabalho possui ?ndice de fluidez de 26g/min (230?C/2,16Kg), densidade de 0,900g/cm3 e Opacidade m?dia de 90% para o produto comercial. Os processos avaliados para obter diminui??o da opacidade foram: a) Graftiza??o do ?cido itac?nico na cadeia polim?rica atrav?s de extrus?o reativa; b) Neutraliza??o com hidr?xido de s?dio do pol?mero graftizado com ?cido itac?nico para obter o sal itaconato de s?dio graftizado na matriz polim?rica; c) Dispers?o do sal sintetizado de itaconato de s?dio como um agente nucleante. As t?cnicas utilizadas para caracteriza??o dos materiais foram: DSC, MOLP, AFM, FTIR, RMN, FRX, Percentual de Opacidade (Haze) e DMA. O processo de neutraliza??o do ?cido itac?nico graftizado no pol?mero conferiu ao material resultados de opacidade de 42%, o que significa uma redu??o da opacidade de 53% em compara??o ao produto comercial.Submitted by PPG Engenharia e Tecnologia de Materiais (engenharia.pg.materiais@pucrs.br) on 2019-06-03T16:50:25Z No. of bitstreams: 1 Disserta??o final corrigida - Mariele.pdf: 2821002 bytes, checksum: 38880f1ea05a73e87edf272d65769deb (MD5)Approved for entry into archive by Sarajane Pan (sarajane.pan@pucrs.br) on 2019-06-17T11:23:22Z (GMT) No. of bitstreams: 1 Disserta??o final corrigida - Mariele.pdf: 2821002 bytes, checksum: 38880f1ea05a73e87edf272d65769deb (MD5)Made available in DSpace on 2019-06-17T11:37:27Z (GMT). No. of bitstreams: 1 Disserta??o final corrigida - Mariele.pdf: 2821002 bytes, checksum: 38880f1ea05a73e87edf272d65769deb (MD5) Previous issue date: 2019-03-29Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPESapplication/pdfhttp://tede2.pucrs.br:80/tede2/retrieve/175615/Disserta%c3%a7%c3%a3o%20final%20corrigida%20-%20Mariele.pdf.jpgporPontif?cia Universidade Cat?lica do Rio Grande do SulPrograma de P?s-Gradua??o em Engenharia e Tecnologia de MateriaisPUCRSBrasilEscola Polit?cnicaCopol?mero Heterof?sico de Eteno-Propeno (EPR)Graftiza??oItaconato de S?dioAgente NucleanteHeterophasic Copolymer of Ethene-Propene (EPR)GraftingSodium ItaconateNucleating AgentENGENHARIASModifica??o da opacidade de copol?mero heterof?sico de polipropilenoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisTrabalho n?o apresenta restri??o para publica??o495391460509391966550050060045189710564848268253590462550136975366info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da PUC_RSinstname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSTHUMBNAILDisserta??o final corrigida - Mariele.pdf.jpgDisserta??o final corrigida - Mariele.pdf.jpgimage/jpeg5743http://tede2.pucrs.br/tede2/bitstream/tede/8721/4/Disserta%C3%A7%C3%A3o+final+corrigida+-+Mariele.pdf.jpgd921db125c221e2b7adc85d5f1aa7a85MD54TEXTDisserta??o final corrigida - Mariele.pdf.txtDisserta??o final corrigida - Mariele.pdf.txttext/plain117103http://tede2.pucrs.br/tede2/bitstream/tede/8721/3/Disserta%C3%A7%C3%A3o+final+corrigida+-+Mariele.pdf.txt8efbbd8c1af50b585cfd463ab576a163MD53ORIGINALDisserta??o final corrigida - Mariele.pdfDisserta??o final corrigida - Mariele.pdfapplication/pdf2821002http://tede2.pucrs.br/tede2/bitstream/tede/8721/2/Disserta%C3%A7%C3%A3o+final+corrigida+-+Mariele.pdf38880f1ea05a73e87edf272d65769debMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-8590http://tede2.pucrs.br/tede2/bitstream/tede/8721/1/license.txt220e11f2d3ba5354f917c7035aadef24MD51tede/87212019-06-17 20:00:28.938oai: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:2019-06-17T23:00:28Biblioteca Digital de Teses e Dissertações da PUC_RS - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false
dc.title.por.fl_str_mv Modifica??o da opacidade de copol?mero heterof?sico de polipropileno
title Modifica??o da opacidade de copol?mero heterof?sico de polipropileno
spellingShingle Modifica??o da opacidade de copol?mero heterof?sico de polipropileno
Stocker, Mariele Kaipers
Copol?mero Heterof?sico de Eteno-Propeno (EPR)
Graftiza??o
Itaconato de S?dio
Agente Nucleante
Heterophasic Copolymer of Ethene-Propene (EPR)
Grafting
Sodium Itaconate
Nucleating Agent
ENGENHARIAS
title_short Modifica??o da opacidade de copol?mero heterof?sico de polipropileno
title_full Modifica??o da opacidade de copol?mero heterof?sico de polipropileno
title_fullStr Modifica??o da opacidade de copol?mero heterof?sico de polipropileno
title_full_unstemmed Modifica??o da opacidade de copol?mero heterof?sico de polipropileno
title_sort Modifica??o da opacidade de copol?mero heterof?sico de polipropileno
author Stocker, Mariele Kaipers
author_facet Stocker, Mariele Kaipers
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/9195432355645221
dc.contributor.author.fl_str_mv Stocker, Mariele Kaipers
contributor_str_mv Basso, Nara Regina de Souza
dc.subject.por.fl_str_mv Copol?mero Heterof?sico de Eteno-Propeno (EPR)
Graftiza??o
Itaconato de S?dio
Agente Nucleante
topic Copol?mero Heterof?sico de Eteno-Propeno (EPR)
Graftiza??o
Itaconato de S?dio
Agente Nucleante
Heterophasic Copolymer of Ethene-Propene (EPR)
Grafting
Sodium Itaconate
Nucleating Agent
ENGENHARIAS
dc.subject.eng.fl_str_mv Heterophasic Copolymer of Ethene-Propene (EPR)
Grafting
Sodium Itaconate
Nucleating Agent
dc.subject.cnpq.fl_str_mv ENGENHARIAS
description Heterophasic copolymers, or impact copolymers are obtained in sequential reactors, in which the polypropylene (PP) is obtained in the first reactor as matrix and the rubber phase of ethene-propene (EPR) is obtained in the second reactor. The rubber phase provides great impact properties to the material, but it makes it more opaque when compared to PP homopolymer. The opacity reduction of impact copolymers is a desired property for the application in rigid and flexible packaging. The objective of this study is to test different methodologies for modifying the crystallization process and rubber fraction of the heterophasic copolymer to achieve opacity reduction. The polymer provided by Braskem S.A used in this study has a flow rate of 26 g/min (230?C/2,16Kg), density of 0,900g/cm3 and average opacity of 90% for the commercial product. The processes studied to obtain opacity reduction were: a) Grafting of itaconic acid in the polymer chain through reactive extrusion; b) Neutralization with sodium hydroxide of the polymer grafted with itaconic acid to obtain the sodium itaconate salt grafted in the polymer matrix; c) Dispersion of the synthetized sodium itaconate salt as a nucleating agent. The techniques used for characterization of the materials were: DSC, MOLP, AFM, FTIR, RMN, XRF, Haze Percent and DMA. The neutralization process of grafted itaconic acid gave the material opacity results of 42%, which means an opacity reduction of 53% comparing to the commercial product.
publishDate 2019
dc.date.accessioned.fl_str_mv 2019-06-17T11:37:27Z
dc.date.issued.fl_str_mv 2019-03-29
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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
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dc.publisher.department.fl_str_mv Escola Polit?cnica
publisher.none.fl_str_mv Pontif?cia Universidade Cat?lica do Rio Grande do Sul
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