Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/39338
Título: | High performance electromechanical actuators based on ionic liquid/poly(vinylidene fluoride) |
Autor(es): | Dias, J. C. Lopes, A. C. Magalhães, B. Botelho, Gabriela Silva, Maria Manuela Esperança, J. M. S. S. Lanceros-Méndez, S. |
Palavras-chave: | PVDF Actuators Ionic liquids Sensors |
Data: | 2015 |
Editora: | Elsevier 1 |
Revista: | Polymer Testing |
Resumo(s): | Due to the increasing need of low voltage actuators, independent from electrochemical processes, electroactive actuators based on poly(vinylidene fluoride) composites with 10, 25 and 40 % of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [C2mim] [NTf2], ionic liquid are prepared by solvent casting and melting. We show that the charge structure of [C2mim] [NTf2] induces the complete piezoelectric -phase crystallization of the PVDF within the composite and decreases its crystallinity fraction significantly. [C2mim] [NTf2] also works as a plasticizer of PVDF, reducing the elastic modulus down to 12 % of the initial value. Moreover, the composites show significant displacement and bending under applied voltages of 2, 5 and 10 Vpp. The displacement and bending of the composite membranes are also evaluated as a function of [C2mim] [NTf2] content and sample thickness. Increasing amounts of ionic liquid result in larger deformations independently of the applied voltage. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/39338 |
DOI: | 10.1016/j.polymertesting.2015.10.012 |
ISSN: | 0142-9418 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDF - FCD - Artigos/Papers (with refereeing) CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Dias_2015.pdf Acesso restrito! | 1,12 MB | Adobe PDF | Ver/Abrir |