Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFSCAR |
Texto Completo: | https://repositorio.ufscar.br/handle/ufscar/9661 |
Resumo: | The morphology of mixtures and polymeric compounds is usually evaluated by off-line characterization methods, which require time for sample preparation and analysis of results. In-line rheo-optical characterization techniques during extrusion involve the quantification of the attenuation of an incident light beam caused by changes in the phase morphology and/or orientation of the polymer chains under flow. Processing conditions, including temperature, flow and pressure outputs are the variables that define the rheological behavior. This project has as main objective a particle size’s evaluation of a second polymer phase of polypropylene (PP) and polyethylene (PE) in polystyrene (PS) by the quantification of incident light attenuation via turbidimetry. The optical device used was bench-tested using standard samples for ceramic particles by light scattering, and for organic dyes by colorimetry, which were prepared in such a way that their parameter (second phase concentration, size of the dispersed particle or dispersed particle type) was changed in a known manner. The systematized study of the samples and the device’s validation were allowed. The analyzes were performed in real time by the pulse addition system during the melt blending process in a W&P ZSK 30 extruder coupled to an instrumented slit die while maintaining the screw rotation and the extruder flow rate constant. During the extrusions, by varying the concentration of the added pulses, different contributions of turbidity collected were obtained. Thus, the particle sizes for the polypropylene and polyethylene pulses were calculated, and such results showed the validity of the particle size analysis system developed, since, for the polymer particles added to the flow, the obtained values of average particle size were satisfactory, with consistent values according to the available literature. |
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Bernardo, Felipe Oliveira CamposCanevarolo Júnior, Sebastião Vicentehttp://lattes.cnpq.br/4153664441338178Silva, Jorge Manuel Jardim dahttp://lattes.cnpq.br/5480257384064266http://lattes.cnpq.br/99741506786152622018-04-04T13:35:34Z2018-04-04T13:35:34Z2017-10-16BERNARDO, Felipe Oliveira Campos. Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão. 2017. Dissertação (Mestrado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2017. Disponível em: https://repositorio.ufscar.br/handle/ufscar/9661.https://repositorio.ufscar.br/handle/ufscar/9661The morphology of mixtures and polymeric compounds is usually evaluated by off-line characterization methods, which require time for sample preparation and analysis of results. In-line rheo-optical characterization techniques during extrusion involve the quantification of the attenuation of an incident light beam caused by changes in the phase morphology and/or orientation of the polymer chains under flow. Processing conditions, including temperature, flow and pressure outputs are the variables that define the rheological behavior. This project has as main objective a particle size’s evaluation of a second polymer phase of polypropylene (PP) and polyethylene (PE) in polystyrene (PS) by the quantification of incident light attenuation via turbidimetry. The optical device used was bench-tested using standard samples for ceramic particles by light scattering, and for organic dyes by colorimetry, which were prepared in such a way that their parameter (second phase concentration, size of the dispersed particle or dispersed particle type) was changed in a known manner. The systematized study of the samples and the device’s validation were allowed. The analyzes were performed in real time by the pulse addition system during the melt blending process in a W&P ZSK 30 extruder coupled to an instrumented slit die while maintaining the screw rotation and the extruder flow rate constant. During the extrusions, by varying the concentration of the added pulses, different contributions of turbidity collected were obtained. Thus, the particle sizes for the polypropylene and polyethylene pulses were calculated, and such results showed the validity of the particle size analysis system developed, since, for the polymer particles added to the flow, the obtained values of average particle size were satisfactory, with consistent values according to the available literature.A morfologia de misturas e compostos poliméricos é usualmente avaliada através de métodos de caracterização off-line, os quais demandam tempo para a preparação das amostras e para a análise dos resultados. Técnicas de caracterização reo-óptica in-line durante a extrusão envolvem a quantificação da atenuação de um feixe de luz incidente provocada por alterações na morfologia das fases e/ou orientação das cadeias poliméricas sob fluxo. Condições de processamento incluindo temperatura, vazão mássica e queda de pressão são as variáveis que definem o comportamento reológico. Este projeto tem como principal objetivo a avaliação do tamanho de partícula de uma segunda fase polimérica de polipropileno (PP) e polietileno (PE) em poliestireno (PS) pela quantificação da atenuação da luz incidente via turbidimetria. O dispositivo óptico utilizado foi testado em bancada com o uso de amostras-padrão tanto para partículas cerâmicas, com a atenuação da luz via espalhamento de luz, como para corantes orgânicos, com a atenuação da luz via absorção, as quais foram elaboradas de maneira que um de seus parâmetros (concentração de segunda fase, tamanho de partícula dispersa ou tipo de partícula dispersa) fosse alterado de forma conhecida. Isso permitiu o estudo sistematizado dessas amostras e a validação do dispositivo. As análises foram feitas em tempo real, pelo sistema de adição de pulsos durante o processo de mistura no estado fundido em uma extrusora W&P ZSK 30 acoplada a uma matriz instrumentada tipo fenda, enquanto se mantinha constante a rotação do parafuso e a vazão da extrusora. Durante as extrusões, variando-se a concentração da segunda fase dos pulsos adicionados foram obtidas diferentes contribuições referentes aos níveis de turbidez coletados. Com isso, os tamanhos de partícula para os pulsos de polipropileno e polietileno foram quantificados e, tais resultados mostraram a validade do sistema de análise de tamanho de partícula desenvolvido, uma vez que, para as partículas poliméricas adicionadas ao fluxo, os valores obtidos de tamanho médio de partícula se mostraram satisfatórios, com valores coerentes de acordo com a literatura disponível.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CNPq: 137511/2015-9porUniversidade Federal de São CarlosCâmpus São CarlosPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEMUFSCarDetector óptico in-lineEspalhamento de luzColorimetriaTurbidimetriaTamanho de partículaExtrusãoIn-line optical detectorLight scatteringColorimetryTurbidimetryParticle sizePolymer extrusionENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOSTurbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusãoIn-line turbidimetry in the quantification of the particle size of polymeric mixtures in extrusioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisOnlineinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARLICENSElicense.txtlicense.txttext/plain; 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dc.title.por.fl_str_mv |
Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão |
dc.title.alternative.eng.fl_str_mv |
In-line turbidimetry in the quantification of the particle size of polymeric mixtures in extrusion |
title |
Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão |
spellingShingle |
Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão Bernardo, Felipe Oliveira Campos Detector óptico in-line Espalhamento de luz Colorimetria Turbidimetria Tamanho de partícula Extrusão In-line optical detector Light scattering Colorimetry Turbidimetry Particle size Polymer extrusion ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
title_short |
Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão |
title_full |
Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão |
title_fullStr |
Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão |
title_full_unstemmed |
Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão |
title_sort |
Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão |
author |
Bernardo, Felipe Oliveira Campos |
author_facet |
Bernardo, Felipe Oliveira Campos |
author_role |
author |
dc.contributor.authorlattes.por.fl_str_mv |
http://lattes.cnpq.br/9974150678615262 |
dc.contributor.author.fl_str_mv |
Bernardo, Felipe Oliveira Campos |
dc.contributor.advisor1.fl_str_mv |
Canevarolo Júnior, Sebastião Vicente |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/4153664441338178 |
dc.contributor.advisor-co1.fl_str_mv |
Silva, Jorge Manuel Jardim da |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/5480257384064266 |
contributor_str_mv |
Canevarolo Júnior, Sebastião Vicente Silva, Jorge Manuel Jardim da |
dc.subject.por.fl_str_mv |
Detector óptico in-line Espalhamento de luz Colorimetria Turbidimetria Tamanho de partícula Extrusão |
topic |
Detector óptico in-line Espalhamento de luz Colorimetria Turbidimetria Tamanho de partícula Extrusão In-line optical detector Light scattering Colorimetry Turbidimetry Particle size Polymer extrusion ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
dc.subject.eng.fl_str_mv |
In-line optical detector Light scattering Colorimetry Turbidimetry Particle size Polymer extrusion |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA::MATERIAIS NAO METALICOS |
description |
The morphology of mixtures and polymeric compounds is usually evaluated by off-line characterization methods, which require time for sample preparation and analysis of results. In-line rheo-optical characterization techniques during extrusion involve the quantification of the attenuation of an incident light beam caused by changes in the phase morphology and/or orientation of the polymer chains under flow. Processing conditions, including temperature, flow and pressure outputs are the variables that define the rheological behavior. This project has as main objective a particle size’s evaluation of a second polymer phase of polypropylene (PP) and polyethylene (PE) in polystyrene (PS) by the quantification of incident light attenuation via turbidimetry. The optical device used was bench-tested using standard samples for ceramic particles by light scattering, and for organic dyes by colorimetry, which were prepared in such a way that their parameter (second phase concentration, size of the dispersed particle or dispersed particle type) was changed in a known manner. The systematized study of the samples and the device’s validation were allowed. The analyzes were performed in real time by the pulse addition system during the melt blending process in a W&P ZSK 30 extruder coupled to an instrumented slit die while maintaining the screw rotation and the extruder flow rate constant. During the extrusions, by varying the concentration of the added pulses, different contributions of turbidity collected were obtained. Thus, the particle sizes for the polypropylene and polyethylene pulses were calculated, and such results showed the validity of the particle size analysis system developed, since, for the polymer particles added to the flow, the obtained values of average particle size were satisfactory, with consistent values according to the available literature. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-10-16 |
dc.date.accessioned.fl_str_mv |
2018-04-04T13:35:34Z |
dc.date.available.fl_str_mv |
2018-04-04T13:35:34Z |
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 |
BERNARDO, Felipe Oliveira Campos. Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão. 2017. Dissertação (Mestrado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2017. Disponível em: https://repositorio.ufscar.br/handle/ufscar/9661. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufscar.br/handle/ufscar/9661 |
identifier_str_mv |
BERNARDO, Felipe Oliveira Campos. Turbidimetria in-line na quantificação do tamanho de partícula de misturas poliméricas na extrusão. 2017. Dissertação (Mestrado em Ciência e Engenharia de Materiais) – Universidade Federal de São Carlos, São Carlos, 2017. Disponível em: https://repositorio.ufscar.br/handle/ufscar/9661. |
url |
https://repositorio.ufscar.br/handle/ufscar/9661 |
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por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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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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