Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFSCAR |
Texto Completo: | https://repositorio.ufscar.br/handle/ufscar/7558 |
Resumo: | This work shows the development, construction, validation and application of an in-line colorimeter used for real time color quantification of the melted flow during polymer processing in the extruder. The device uses a set of four colored LED’s, red (R), green (G), blue (B) and white (W), that intermittently and sequentially illuminate the melt flow with its intensity transmitted through the flow and quantified by a single photocell. At first the device was validated in bench using aqueous colored solutions and later in the extruder during processing, using known concentrations of the acid dye diluted in polymer. The device was able to quantify with precision and in real time the attenuation of the different wavelengths emitted by each LED, caused by the presence of chromophore groups in the melted flow. It was successful to use to monitor in real time the degradation of polypropylene submitted to multiple extrusions. Degradation was proven through off-line analyses of multiprocessed polypropylene via rheometry and spectroscopy absorption on UV-visible. It was also used to quantify color in the melted mixture of polypropylene/montmorillonite (PP/MMT) to obtain nanocomposites. Using hue and luminosity parameters of the color it was possible to follow oxidation of iron ions present as impurity in the clay structure, determining which clays were better suited to these nanocomposite production. |
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Hamester, Letícia SausenCanevarolo Júnior, Sebastião Vicentehttp://lattes.cnpq.br/4153664441338178http://lattes.cnpq.br/0005558843039794111cf0f9-5fb0-4863-9f99-aff2a7c1c7bd2016-09-27T20:10:49Z2016-09-27T20:10:49Z2014-01-30HAMESTER, Letícia Sausen. Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros. 2014. Dissertação (Mestrado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2014. Disponível em: https://repositorio.ufscar.br/handle/ufscar/7558.https://repositorio.ufscar.br/handle/ufscar/7558This work shows the development, construction, validation and application of an in-line colorimeter used for real time color quantification of the melted flow during polymer processing in the extruder. The device uses a set of four colored LED’s, red (R), green (G), blue (B) and white (W), that intermittently and sequentially illuminate the melt flow with its intensity transmitted through the flow and quantified by a single photocell. At first the device was validated in bench using aqueous colored solutions and later in the extruder during processing, using known concentrations of the acid dye diluted in polymer. The device was able to quantify with precision and in real time the attenuation of the different wavelengths emitted by each LED, caused by the presence of chromophore groups in the melted flow. It was successful to use to monitor in real time the degradation of polypropylene submitted to multiple extrusions. Degradation was proven through off-line analyses of multiprocessed polypropylene via rheometry and spectroscopy absorption on UV-visible. It was also used to quantify color in the melted mixture of polypropylene/montmorillonite (PP/MMT) to obtain nanocomposites. Using hue and luminosity parameters of the color it was possible to follow oxidation of iron ions present as impurity in the clay structure, determining which clays were better suited to these nanocomposite production.Este trabalho mostra o desenvolvimento, construção, validação e aplicação de um Colorímetro in-line para a quantificação em tempo real da cor do fluxo fundido durante o processamento do polímero na extrusora. Ele é constituído por um conjunto de quatro LEDs (Light Emitting Diode) nas cores vermelho (R), verde (G), azul (B) e branco (W) que iluminam de forma intermitente e sequencial o fluxo fundido sendo a intensidade da luz transmitida através do fundido quantificada por uma única fotocélula. Inicialmente o dispositivo foi validado em bancada, com o uso de fluxo de soluções aquosas coloridas e a seguir diretamente no processo de extrusão, com o uso de formulações de polímero tingido com corante ácido em concentrações conhecidas. O dispositivo mostrou-se capaz de quantificar com precisão e em tempo real a atenuação dos diferentes comprimentos de onda da luz emitida pelos diferentes LEDs, causada pela presença de grupos cromóforos presentes no fluxo fundido. Ele foi utilizado com sucesso no monitoramento em tempo real da degradação do polipropileno submetido a múltiplas extrusões. Esta foi comprovada através de medidas off-line das características reológicas e de absorção no espectro UV-visível do polipropileno multiprocessado. Também foi usado para a quantificação da cor formada durante a mistura no estado fundido para a formação de nanocompósitos de polipropileno/montmorilonita (PP/MMT). Através da análise dos parâmetros de tonalidade e luminosidade da cor foi possível acompanhar a oxidação dos íons de ferro presentes como impureza na estrutura da argila e assim determinar as melhores argilas na produção destes nanocompósitos.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)porUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEMUFSCarPolímerosMonitoramento in-lineColorimetriaENGENHARIASDesenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímerosDevelopment of an in-line colorymeter to monitor polymer extrusioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisOnline6006006b2d5997-da68-4e0a-acd3-60ce6225978finfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARORIGINALDissLSH.pdfDissLSH.pdfapplication/pdf5264839https://repositorio.ufscar.br/bitstream/ufscar/7558/1/DissLSH.pdf335e4744831b540d8bab68a8d28d6c01MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81957https://repositorio.ufscar.br/bitstream/ufscar/7558/2/license.txtae0398b6f8b235e40ad82cba6c50031dMD52TEXTDissLSH.pdf.txtDissLSH.pdf.txtExtracted texttext/plain188770https://repositorio.ufscar.br/bitstream/ufscar/7558/3/DissLSH.pdf.txt9622e2723a87cff79c742013c2e4c5d6MD53THUMBNAILDissLSH.pdf.jpgDissLSH.pdf.jpgIM Thumbnailimage/jpeg6089https://repositorio.ufscar.br/bitstream/ufscar/7558/4/DissLSH.pdf.jpg24c1988b0fb071cacfa2d9d7fcbbdec6MD54ufscar/75582023-09-18 18:31:09.099oai:repositorio.ufscar.br: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Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:31:09Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.por.fl_str_mv |
Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros |
dc.title.alternative.eng.fl_str_mv |
Development of an in-line colorymeter to monitor polymer extrusion |
title |
Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros |
spellingShingle |
Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros Hamester, Letícia Sausen Polímeros Monitoramento in-line Colorimetria ENGENHARIAS |
title_short |
Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros |
title_full |
Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros |
title_fullStr |
Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros |
title_full_unstemmed |
Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros |
title_sort |
Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros |
author |
Hamester, Letícia Sausen |
author_facet |
Hamester, Letícia Sausen |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/0005558843039794 |
dc.contributor.author.fl_str_mv |
Hamester, Letícia Sausen |
dc.contributor.advisor1.fl_str_mv |
Canevarolo Júnior, Sebastião Vicente |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/4153664441338178 |
dc.contributor.authorID.fl_str_mv |
111cf0f9-5fb0-4863-9f99-aff2a7c1c7bd |
contributor_str_mv |
Canevarolo Júnior, Sebastião Vicente |
dc.subject.por.fl_str_mv |
Polímeros Monitoramento in-line Colorimetria |
topic |
Polímeros Monitoramento in-line Colorimetria ENGENHARIAS |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS |
description |
This work shows the development, construction, validation and application of an in-line colorimeter used for real time color quantification of the melted flow during polymer processing in the extruder. The device uses a set of four colored LED’s, red (R), green (G), blue (B) and white (W), that intermittently and sequentially illuminate the melt flow with its intensity transmitted through the flow and quantified by a single photocell. At first the device was validated in bench using aqueous colored solutions and later in the extruder during processing, using known concentrations of the acid dye diluted in polymer. The device was able to quantify with precision and in real time the attenuation of the different wavelengths emitted by each LED, caused by the presence of chromophore groups in the melted flow. It was successful to use to monitor in real time the degradation of polypropylene submitted to multiple extrusions. Degradation was proven through off-line analyses of multiprocessed polypropylene via rheometry and spectroscopy absorption on UV-visible. It was also used to quantify color in the melted mixture of polypropylene/montmorillonite (PP/MMT) to obtain nanocomposites. Using hue and luminosity parameters of the color it was possible to follow oxidation of iron ions present as impurity in the clay structure, determining which clays were better suited to these nanocomposite production. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014-01-30 |
dc.date.accessioned.fl_str_mv |
2016-09-27T20:10:49Z |
dc.date.available.fl_str_mv |
2016-09-27T20:10:49Z |
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 |
HAMESTER, Letícia Sausen. Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros. 2014. Dissertação (Mestrado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2014. Disponível em: https://repositorio.ufscar.br/handle/ufscar/7558. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/7558 |
identifier_str_mv |
HAMESTER, Letícia Sausen. Desenvolvimento de um colorímetro in-line para o monitoramento da extrusão de polímeros. 2014. Dissertação (Mestrado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2014. Disponível em: https://repositorio.ufscar.br/handle/ufscar/7558. |
url |
https://repositorio.ufscar.br/handle/ufscar/7558 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.confidence.fl_str_mv |
600 600 |
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6b2d5997-da68-4e0a-acd3-60ce6225978f |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de São Carlos Câmpus São Carlos |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEM |
dc.publisher.initials.fl_str_mv |
UFSCar |
publisher.none.fl_str_mv |
Universidade Federal de São Carlos Câmpus São Carlos |
dc.source.none.fl_str_mv |
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Repositório Institucional da UFSCAR |
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