Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers
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/1822/64638 |
Resumo: | Environmental issues promote the development of sensors based on natural polymers which are becoming an area of increasing interest. Piezoresistive sensors based on silk fibroin with carbon nanotubes (CNTs) as fillers were produced by solvent-casting in order to tune their electrical conductivity and electromechanical responses. It is shown that the carbonaceous fillers are well dispersed in the polymer matrix and the thermal and mechanical properties are independent of the CNT content. On the other hand, the inclusion of CNTs reduces the beta-sheet content of silk fibroin and the electrical properties of the composite strongly depend on the filler content, the percolation threshold being around 1 wt% CNTs. The piezoresistive response demonstrates good reproducibility during cyclic loading without hysteresis with a piezoresistive sensitivity of similar to 4 MPa-1, regardless of the CNT content. Overall, the results confirm that polymer composites based on natural polymers exhibit excellent piezoresistive responses, also demonstrated by the implementation and testing of a pressure sensor with the corresponding readout electronics. Thus, it is shown that natural polymers such as silk fibroin will allow the development of a new generation of multifunctional force and deformation sensors. |
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Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymersScience & TechnologyEnvironmental issues promote the development of sensors based on natural polymers which are becoming an area of increasing interest. Piezoresistive sensors based on silk fibroin with carbon nanotubes (CNTs) as fillers were produced by solvent-casting in order to tune their electrical conductivity and electromechanical responses. It is shown that the carbonaceous fillers are well dispersed in the polymer matrix and the thermal and mechanical properties are independent of the CNT content. On the other hand, the inclusion of CNTs reduces the beta-sheet content of silk fibroin and the electrical properties of the composite strongly depend on the filler content, the percolation threshold being around 1 wt% CNTs. The piezoresistive response demonstrates good reproducibility during cyclic loading without hysteresis with a piezoresistive sensitivity of similar to 4 MPa-1, regardless of the CNT content. Overall, the results confirm that polymer composites based on natural polymers exhibit excellent piezoresistive responses, also demonstrated by the implementation and testing of a pressure sensor with the corresponding readout electronics. Thus, it is shown that natural polymers such as silk fibroin will allow the development of a new generation of multifunctional force and deformation sensors.The authors acknowledge the FCT (Fundacao para a Ciencia e Tecnologia) for financial support under the framework of Strategic Funding grants UID/FIS/04650/2013, UID/EEA/04436/2013 and UID/QUI/0686/2016 and project no. PTDC/FIS-MAC/28157/2017. The authors also acknowledge the FCT for financial support under grants SFRH/BD/110622/2015 (S.G.), SFRH/BPD/112547/2015 (C.M.C.) and SFRH/BPD/110914/2015 (P.C.). Financial support from the Spanish Ministry of Economy and Competitiveness (MINECO) through project MAT2016-76039C4-3-R (AEI/FEDER, UE) (including FEDER financial support) and from the Basque Government Industry and Education Departments under the ELKARTEK, HAZITEK and PIBA (PIBA2018-06) programs is also acknowledged.Royal Society of ChemistryUniversidade do MinhoReizabal, A.Gonçalves, Sérgio Abílio PereiraBrito-Pereira, R.Costa, P.Costa, Carlos Miguel SilvaPérez-Álvarez, L.Vilas-Vilela, J. L.Lanceros-Méndez, S.20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/64638engReizabal, A., Gonçalves, S., Brito-Pereira, R., Costa, P., Costa, C. M., Pérez-Álvarez, L., … Lanceros-Méndez, S. (2019). Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers. Nanoscale Advances. Royal Society of Chemistry (RSC). http://doi.org/10.1039/c8na00417j2516-023010.1039/c8na00417jinfo: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:RCAAP2023-07-21T12:26:37Zoai:repositorium.sdum.uminho.pt:1822/64638Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:21:04.835091Repositório 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 |
Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers |
title |
Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers |
spellingShingle |
Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers Reizabal, A. Science & Technology |
title_short |
Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers |
title_full |
Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers |
title_fullStr |
Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers |
title_full_unstemmed |
Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers |
title_sort |
Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers |
author |
Reizabal, A. |
author_facet |
Reizabal, A. Gonçalves, Sérgio Abílio Pereira Brito-Pereira, R. Costa, P. Costa, Carlos Miguel Silva Pérez-Álvarez, L. Vilas-Vilela, J. L. Lanceros-Méndez, S. |
author_role |
author |
author2 |
Gonçalves, Sérgio Abílio Pereira Brito-Pereira, R. Costa, P. Costa, Carlos Miguel Silva Pérez-Álvarez, L. Vilas-Vilela, J. L. Lanceros-Méndez, S. |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Reizabal, A. Gonçalves, Sérgio Abílio Pereira Brito-Pereira, R. Costa, P. Costa, Carlos Miguel Silva Pérez-Álvarez, L. Vilas-Vilela, J. L. Lanceros-Méndez, S. |
dc.subject.por.fl_str_mv |
Science & Technology |
topic |
Science & Technology |
description |
Environmental issues promote the development of sensors based on natural polymers which are becoming an area of increasing interest. Piezoresistive sensors based on silk fibroin with carbon nanotubes (CNTs) as fillers were produced by solvent-casting in order to tune their electrical conductivity and electromechanical responses. It is shown that the carbonaceous fillers are well dispersed in the polymer matrix and the thermal and mechanical properties are independent of the CNT content. On the other hand, the inclusion of CNTs reduces the beta-sheet content of silk fibroin and the electrical properties of the composite strongly depend on the filler content, the percolation threshold being around 1 wt% CNTs. The piezoresistive response demonstrates good reproducibility during cyclic loading without hysteresis with a piezoresistive sensitivity of similar to 4 MPa-1, regardless of the CNT content. Overall, the results confirm that polymer composites based on natural polymers exhibit excellent piezoresistive responses, also demonstrated by the implementation and testing of a pressure sensor with the corresponding readout electronics. Thus, it is shown that natural polymers such as silk fibroin will allow the development of a new generation of multifunctional force and deformation sensors. |
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/1822/64638 |
url |
https://hdl.handle.net/1822/64638 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Reizabal, A., Gonçalves, S., Brito-Pereira, R., Costa, P., Costa, C. M., Pérez-Álvarez, L., … Lanceros-Méndez, S. (2019). Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers. Nanoscale Advances. Royal Society of Chemistry (RSC). http://doi.org/10.1039/c8na00417j 2516-0230 10.1039/c8na00417j |
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 |
Royal Society of Chemistry |
publisher.none.fl_str_mv |
Royal Society of Chemistry |
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 |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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