Effect of the mechanical stretching on the ferroelectric properties of a (VDF/TrFE) (75/25) copolymer film

Detalhes bibliográficos
Autor(a) principal: Sencadas, Vítor João Gomes Silva
Data de Publicação: 2004
Outros Autores: Lanceros-Méndez, S., Mano, J. F.
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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spelling 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
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str 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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