Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer film
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/3534 |
Resumo: | The transition phase behaviour of a vinylidene fluoride–trifluoroethylene (VDF–TrFE) copolymer film was studied after being subjected to different mechanical stretching levels in both longitudinal (L) and transversal (T) directions relatively to the initial extrusion direction. Both ferroelectric–paraelectric (FE–PE) and melting transitions were detected in the films by differential scanning calorimetry, that were not affected by L stretching. This suggests that sliding mechanism along the c-axis of such films during plastic deformation influences slightly the all-trans chain conformations and the CF2 dipole orientation. On the other hand, the FE–PE peak decreases in area and temperature upon T stretching, indicating a damage of the ferroelectric phase. However, the melting peak maintains unchanged. This fact provides evidence that the mechanical stretching do not change the total degree of crystallinity. The results suggest that the stretching induces a FE–PE phase transformation, without affecting the degree of crystallinity. |
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Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer filmFerroelectricsPolymersThermodynamic propertiesMechanical propertiesA. FerroelectricsA. PolymersD. Mechanical propertiesD. Thermodynamic propertiesScience & TechnologyThe transition phase behaviour of a vinylidene fluoride–trifluoroethylene (VDF–TrFE) copolymer film was studied after being subjected to different mechanical stretching levels in both longitudinal (L) and transversal (T) directions relatively to the initial extrusion direction. Both ferroelectric–paraelectric (FE–PE) and melting transitions were detected in the films by differential scanning calorimetry, that were not affected by L stretching. This suggests that sliding mechanism along the c-axis of such films during plastic deformation influences slightly the all-trans chain conformations and the CF2 dipole orientation. On the other hand, the FE–PE peak decreases in area and temperature upon T stretching, indicating a damage of the ferroelectric phase. However, the melting peak maintains unchanged. This fact provides evidence that the mechanical stretching do not change the total degree of crystallinity. The results suggest that the stretching induces a FE–PE phase transformation, without affecting the degree of crystallinity.Fundação para a Ciência e Tecnologia (FCT) - Programa Operacional "Ciência, Tecnologia, Inovação" (POCTI) - POCTI/CTM/33501/99.Hamburger Synchrotronstrahlungslabor (HASYLAB) - Project II-01-006 EC.ElsevierUniversidade do MinhoSencadas, Vítor João Gomes SilvaLanceros-Méndez, S.Mano, J. F.2004-012004-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/3534eng"Solid State Communications". ISSN 129:1 (2004) 5-8.0038-109810.1016/j.ssc.2003.07.010http://www.elsevier.com/wps/find/journaldescription.cws_home/230/description#descriptioninfo: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:RCAAP2023-07-21T12:00:10Zoai:repositorium.sdum.uminho.pt:1822/3534Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:50:01.183451Repositório 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 |
Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer film |
title |
Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer film |
spellingShingle |
Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer film Sencadas, Vítor João Gomes Silva Ferroelectrics Polymers Thermodynamic properties Mechanical properties A. Ferroelectrics A. Polymers D. Mechanical properties D. Thermodynamic properties Science & Technology |
title_short |
Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer film |
title_full |
Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer film |
title_fullStr |
Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer film |
title_full_unstemmed |
Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer film |
title_sort |
Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer film |
author |
Sencadas, Vítor João Gomes Silva |
author_facet |
Sencadas, Vítor João Gomes Silva Lanceros-Méndez, S. Mano, J. F. |
author_role |
author |
author2 |
Lanceros-Méndez, S. Mano, J. F. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Sencadas, Vítor João Gomes Silva Lanceros-Méndez, S. Mano, J. F. |
dc.subject.por.fl_str_mv |
Ferroelectrics Polymers Thermodynamic properties Mechanical properties A. Ferroelectrics A. Polymers D. Mechanical properties D. Thermodynamic properties Science & Technology |
topic |
Ferroelectrics Polymers Thermodynamic properties Mechanical properties A. Ferroelectrics A. Polymers D. Mechanical properties D. Thermodynamic properties Science & Technology |
description |
The transition phase behaviour of a vinylidene fluoride–trifluoroethylene (VDF–TrFE) copolymer film was studied after being subjected to different mechanical stretching levels in both longitudinal (L) and transversal (T) directions relatively to the initial extrusion direction. Both ferroelectric–paraelectric (FE–PE) and melting transitions were detected in the films by differential scanning calorimetry, that were not affected by L stretching. This suggests that sliding mechanism along the c-axis of such films during plastic deformation influences slightly the all-trans chain conformations and the CF2 dipole orientation. On the other hand, the FE–PE peak decreases in area and temperature upon T stretching, indicating a damage of the ferroelectric phase. However, the melting peak maintains unchanged. This fact provides evidence that the mechanical stretching do not change the total degree of crystallinity. The results suggest that the stretching induces a FE–PE phase transformation, without affecting the degree of crystallinity. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-01 2004-01-01T00:00:00Z |
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/1822/3534 |
url |
http://hdl.handle.net/1822/3534 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Solid State Communications". ISSN 129:1 (2004) 5-8. 0038-1098 10.1016/j.ssc.2003.07.010 http://www.elsevier.com/wps/find/journaldescription.cws_home/230/description#description |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
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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1799132267052793856 |