Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/64611 |
Resumo: | Blends of poly(vinylidene fluoride) (PVDF) and ionic liquids (ILs) with different cations and anions have been prepared by solvent casting. The IL content was the same in all blends of the series. Molecular relaxation and ionic conductivity have been systematically studied by broadband dielectric relaxation spectroscopy (BDS) in wide frequency (0.1 Hz-1 MHz) and temperature ranges (-120 to 150 degrees C) and the results have been analysed in terms of dielectric modulus M*(omega) and conductivity sigma*(omega) formalisms. The main relaxation process (beta-relaxation) of the amorphous phase of the blend that integrates amorphous polymer chain segments and IL molecules was observed. Significant differences in the Vogel-Fulcher-Tammann (VFT) fitting parameters in the PVDF/IL blends with different anions were detected. The conductivity sigma*(omega) formalism shows that it is strongly dependent on the miscibility of the IL with the amorphous PVDF chains and the type of anion. The Barton-Namikawa-Nakajima (BNN) relation sigma(0) similar to omega(c) is fulfilled for all PVDF/IL blends except for that containing 1-ethyl-3-methylimidazolium hydrogen sulfate, [Emim][HSO4]. The activation energy of the ac conductivity, calculated according to the Dyre model, decreases for all PVDF/IL blends with respect to neat PVDF. The structure of the cation of the IL has been found to exert less influence on the dielectric and conductivity properties of the blends. |
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Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation typePVDFIonic liquidDielectric responseConductivityElectric modulusCiências Naturais::Ciências FísicasScience & TechnologyBlends of poly(vinylidene fluoride) (PVDF) and ionic liquids (ILs) with different cations and anions have been prepared by solvent casting. The IL content was the same in all blends of the series. Molecular relaxation and ionic conductivity have been systematically studied by broadband dielectric relaxation spectroscopy (BDS) in wide frequency (0.1 Hz-1 MHz) and temperature ranges (-120 to 150 degrees C) and the results have been analysed in terms of dielectric modulus M*(omega) and conductivity sigma*(omega) formalisms. The main relaxation process (beta-relaxation) of the amorphous phase of the blend that integrates amorphous polymer chain segments and IL molecules was observed. Significant differences in the Vogel-Fulcher-Tammann (VFT) fitting parameters in the PVDF/IL blends with different anions were detected. The conductivity sigma*(omega) formalism shows that it is strongly dependent on the miscibility of the IL with the amorphous PVDF chains and the type of anion. The Barton-Namikawa-Nakajima (BNN) relation sigma(0) similar to omega(c) is fulfilled for all PVDF/IL blends except for that containing 1-ethyl-3-methylimidazolium hydrogen sulfate, [Emim][HSO4]. The activation energy of the ac conductivity, calculated according to the Dyre model, decreases for all PVDF/IL blends with respect to neat PVDF. The structure of the cation of the IL has been found to exert less influence on the dielectric and conductivity properties of the blends.This work was supported by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UID/FIS/04650/2013 and the Associated Laboratory Research Unit for Green Chemistry, Technologies and Clean Processes, LAQV (financed by national funds from FCT/MEC, UID/QUI/50006/2013 and ERDF under the PT2020, POCI-01-0145-FEDER-007265). The authors thank FEDER funds through the COMPETE 2020 Programme and National Funds through FCT under the projects PTDC/CTM-ENE/5387/2014, PTDC/EEI-SII/5582/2014 and PTDC/FIS-MAC/28157/2017. D.M.C., C.M.C., J.M.S center dot S.E. and P.M.R. also thank to the FCT for grants SFRH/BPD/121526/2016 and SFRH/BPD/112547/2015, and Investigator FCT contracts IF/00355/2012 and IF/0621/2015, respectively. Financial support from the Spanish Ministry of Economy and Competitiveness (MINECO) through the project MAT2016-76039-C4-(1 and 3)-R (AEI/FEDER, UE) (including the FEDER financial support) and from the Basque Government Industry and Education Departments under the ELKARTEK, HAZITEK and PIBA (PIBA-2018-06) programs, respectively, are acknowledged. CIBER-BBN is an initiative funded by the VI National R&D&I Plan 2008-2011, Iniciativa Ingenio 2010, Consolider Program. CIBER Actions are financed by the Instituto de Salud Carlos III with assistance from the European Regional Development Fund.Elsevier 1Universidade do MinhoCorreia, Daniela Maria SilvaCosta, Carlos Miguel SilvaSabater i Serra, R.Gómez Tejedor, J. A.Teruel Biosca, L.de Zea Bermudez, V.Esperança, J. M. S. S.Reis, P. M.Andrio Balado, A.Meseguer-Duenas, J. M.Lanceros-Méndez, S.Gomez Ribelles, J. L.20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/64611engCorreia, D. M., Costa, C. M., Sabater i Serra, R., Gómez Tejedor, J. A., Teruel Biosca, L., de Zea Bermudez, V., … Gomez Ribelles, J. L. (2019, May). Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type. Polymer. Elsevier BV. http://doi.org/10.1016/j.polymer.2019.03.0320032-386110.1016/j.polymer.2019.03.032https://www.sciencedirect.com/science/article/pii/S0032386119302538info: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:RCAAP2024-11-16T01:29:01Zoai:repositorium.sdum.uminho.pt:1822/64611Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-11-16T01:29:01Repositório 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 |
Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type |
title |
Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type |
spellingShingle |
Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type Correia, Daniela Maria Silva PVDF Ionic liquid Dielectric response Conductivity Electric modulus Ciências Naturais::Ciências Físicas Science & Technology |
title_short |
Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type |
title_full |
Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type |
title_fullStr |
Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type |
title_full_unstemmed |
Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type |
title_sort |
Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type |
author |
Correia, Daniela Maria Silva |
author_facet |
Correia, Daniela Maria Silva Costa, Carlos Miguel Silva Sabater i Serra, R. Gómez Tejedor, J. A. Teruel Biosca, L. de Zea Bermudez, V. Esperança, J. M. S. S. Reis, P. M. Andrio Balado, A. Meseguer-Duenas, J. M. Lanceros-Méndez, S. Gomez Ribelles, J. L. |
author_role |
author |
author2 |
Costa, Carlos Miguel Silva Sabater i Serra, R. Gómez Tejedor, J. A. Teruel Biosca, L. de Zea Bermudez, V. Esperança, J. M. S. S. Reis, P. M. Andrio Balado, A. Meseguer-Duenas, J. M. Lanceros-Méndez, S. Gomez Ribelles, J. L. |
author2_role |
author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Correia, Daniela Maria Silva Costa, Carlos Miguel Silva Sabater i Serra, R. Gómez Tejedor, J. A. Teruel Biosca, L. de Zea Bermudez, V. Esperança, J. M. S. S. Reis, P. M. Andrio Balado, A. Meseguer-Duenas, J. M. Lanceros-Méndez, S. Gomez Ribelles, J. L. |
dc.subject.por.fl_str_mv |
PVDF Ionic liquid Dielectric response Conductivity Electric modulus Ciências Naturais::Ciências Físicas Science & Technology |
topic |
PVDF Ionic liquid Dielectric response Conductivity Electric modulus Ciências Naturais::Ciências Físicas Science & Technology |
description |
Blends of poly(vinylidene fluoride) (PVDF) and ionic liquids (ILs) with different cations and anions have been prepared by solvent casting. The IL content was the same in all blends of the series. Molecular relaxation and ionic conductivity have been systematically studied by broadband dielectric relaxation spectroscopy (BDS) in wide frequency (0.1 Hz-1 MHz) and temperature ranges (-120 to 150 degrees C) and the results have been analysed in terms of dielectric modulus M*(omega) and conductivity sigma*(omega) formalisms. The main relaxation process (beta-relaxation) of the amorphous phase of the blend that integrates amorphous polymer chain segments and IL molecules was observed. Significant differences in the Vogel-Fulcher-Tammann (VFT) fitting parameters in the PVDF/IL blends with different anions were detected. The conductivity sigma*(omega) formalism shows that it is strongly dependent on the miscibility of the IL with the amorphous PVDF chains and the type of anion. The Barton-Namikawa-Nakajima (BNN) relation sigma(0) similar to omega(c) is fulfilled for all PVDF/IL blends except for that containing 1-ethyl-3-methylimidazolium hydrogen sulfate, [Emim][HSO4]. The activation energy of the ac conductivity, calculated according to the Dyre model, decreases for all PVDF/IL blends with respect to neat PVDF. The structure of the cation of the IL has been found to exert less influence on the dielectric and conductivity properties of the blends. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 2019-01-01T00:00:00Z |
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 |
https://hdl.handle.net/1822/64611 |
url |
https://hdl.handle.net/1822/64611 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Correia, D. M., Costa, C. M., Sabater i Serra, R., Gómez Tejedor, J. A., Teruel Biosca, L., de Zea Bermudez, V., … Gomez Ribelles, J. L. (2019, May). Molecular relaxation and ionic conductivity of ionic liquids confined in a poly(vinylidene fluoride) polymer matrix: Influence of anion and cation type. Polymer. Elsevier BV. http://doi.org/10.1016/j.polymer.2019.03.032 0032-3861 10.1016/j.polymer.2019.03.032 https://www.sciencedirect.com/science/article/pii/S0032386119302538 |
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 1 |
publisher.none.fl_str_mv |
Elsevier 1 |
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 |
repository.mail.fl_str_mv |
mluisa.alvim@gmail.com |
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1817545376694009856 |