Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopy

Detalhes bibliográficos
Autor(a) principal: Bicalho, Luciana Assumpção
Data de Publicação: 2017
Outros Autores: Silva, Jorge Manuel Jardim da, Covas, J. A., Canevarolo, Sebastião Vicente
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/53229
Resumo: An experimental setup using a polarized optical microscope fitted with a detection module capable of measuring the cross-polarized transmitted light intensity and the transmitted light intensity of the polymer sample being analyzed, together with an accompanying calculation procedure, is proposed in order to characterize in real-time thermal transitions and degree of crystallinity, as well as birefringence (which is a measure of orientation) and turbidity. The experimental assessment of the technique was carried out studying commercial poly(ethylene terephthalate) multifilaments with different crystallinity and stretching levels and by direct comparison with the features of conventional DSC curves obtained under similar experimental conditions. While an excellent correlation was found between the type and temperature ranges of thermal events as detected by thermal and optical techniques, the measured birefringence was shown to be sensitive to distinct filament stretching levels, but unaffected by geometrical factors. Contrarily, turbidity is influenced by the latter
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spelling Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopyBirefringenceOptical path differencePolarized light microscopyPoly(ethylene terephthalate)Thermo-optical behaviorScience & TechnologyAn experimental setup using a polarized optical microscope fitted with a detection module capable of measuring the cross-polarized transmitted light intensity and the transmitted light intensity of the polymer sample being analyzed, together with an accompanying calculation procedure, is proposed in order to characterize in real-time thermal transitions and degree of crystallinity, as well as birefringence (which is a measure of orientation) and turbidity. The experimental assessment of the technique was carried out studying commercial poly(ethylene terephthalate) multifilaments with different crystallinity and stretching levels and by direct comparison with the features of conventional DSC curves obtained under similar experimental conditions. While an excellent correlation was found between the type and temperature ranges of thermal events as detected by thermal and optical techniques, the measured birefringence was shown to be sensitive to distinct filament stretching levels, but unaffected by geometrical factors. Contrarily, turbidity is influenced by the latterThe authors would like to acknowledge UNIFI, ECOFABRIL and DOW, Brazil, for donating materials, as well as Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) for scholarship to L. A. Bicalho, grant BJT 019/2012 to J. M. J. Silva, grant PVE 30484/2013-01 to J. A. Covas and Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) for a PQ scholarship 311790/2013-5 to S. V. Canevarolo. The assistance of the technicians from DEMa is also gratefully acknowledged.info:eu-repo/semantics/publishedVersionSpringerUniversidade do MinhoBicalho, Luciana AssumpçãoSilva, Jorge Manuel Jardim daCovas, J. A.Canevarolo, Sebastião Vicente20172017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/53229eng1388-615010.1007/s10973-017-6714-5info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:23:05Zoai:repositorium.sdum.uminho.pt:1822/53229Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:16:42.688822Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopy
title Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopy
spellingShingle Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopy
Bicalho, Luciana Assumpção
Birefringence
Optical path difference
Polarized light microscopy
Poly(ethylene terephthalate)
Thermo-optical behavior
Science & Technology
title_short Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopy
title_full Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopy
title_fullStr Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopy
title_full_unstemmed Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopy
title_sort Real-time thermo-optical analysis of polymer samples by quantitative polarized optical microscopy
author Bicalho, Luciana Assumpção
author_facet Bicalho, Luciana Assumpção
Silva, Jorge Manuel Jardim da
Covas, J. A.
Canevarolo, Sebastião Vicente
author_role author
author2 Silva, Jorge Manuel Jardim da
Covas, J. A.
Canevarolo, Sebastião Vicente
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Bicalho, Luciana Assumpção
Silva, Jorge Manuel Jardim da
Covas, J. A.
Canevarolo, Sebastião Vicente
dc.subject.por.fl_str_mv Birefringence
Optical path difference
Polarized light microscopy
Poly(ethylene terephthalate)
Thermo-optical behavior
Science & Technology
topic Birefringence
Optical path difference
Polarized light microscopy
Poly(ethylene terephthalate)
Thermo-optical behavior
Science & Technology
description An experimental setup using a polarized optical microscope fitted with a detection module capable of measuring the cross-polarized transmitted light intensity and the transmitted light intensity of the polymer sample being analyzed, together with an accompanying calculation procedure, is proposed in order to characterize in real-time thermal transitions and degree of crystallinity, as well as birefringence (which is a measure of orientation) and turbidity. The experimental assessment of the technique was carried out studying commercial poly(ethylene terephthalate) multifilaments with different crystallinity and stretching levels and by direct comparison with the features of conventional DSC curves obtained under similar experimental conditions. While an excellent correlation was found between the type and temperature ranges of thermal events as detected by thermal and optical techniques, the measured birefringence was shown to be sensitive to distinct filament stretching levels, but unaffected by geometrical factors. Contrarily, turbidity is influenced by the latter
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-01-01T00:00:00Z
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://hdl.handle.net/1822/53229
url http://hdl.handle.net/1822/53229
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1388-6150
10.1007/s10973-017-6714-5
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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