Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/75500
Título: | High dielectric constant poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) for capacitive pressure and bending sensors |
Autor(es): | Pereira, N. Gonçalves, S. Barbosa, J. C. Gonçalves, Renato Ferreira Tubio, C. R. Vilas-Vilela, J. L. Costa, Carlos Miguel Silva Lanceros-Méndez, S. |
Palavras-chave: | Fluorinated polymers Dielectric constant Capacitive sensors Bending sensors Solvent casting |
Data: | Fev-2021 |
Editora: | Elsevier |
Revista: | Polymer |
Citação: | Pereira, N., Gonçalves, S., Barbosa, J. C., Gonçalves, R., Tubio, C. R., Vilas-Vilela, J. L., . . . Lanceros-Mendez, S. (2021). High dielectric constant poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) for capacitive pressure and bending sensors. Polymer, 214, 123349. doi: https://doi.org/10.1016/j.polymer.2020.123349 |
Resumo(s): | Poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene), P(VDF-TrFE-CFE), samples were prepared by solvent casting by varying polymer concentration and solvent evaporation temperature. Different sample morphologies were obtained depending on the processing conditions, as well as different physical-chemical properties such as degree of crystallinity, mechanical and dielectric properties. On the other hand, the electroactive β-phase content and the degradation temperature of the P(VDF-TrFE-CFE) samples are independent of the processing conditions. At 1 kHz, the highest dielectric constant, ε’ = 40, was obtained for the samples prepared with 15 wt% polymer concentration in solutions and processing conditions based on solvent evaporation and polymer melting at 210 °C. Taking into account the high dielectric response, pressure and bending capacitive sensors were developed with excellent response and high sensibility (0.03 kPa−1). The developed materials were evaluated for bending and force detection applications. Thus, it is concluded that the developed P(VDF-TrFE-CFE) films are suitable for a new generation of multifunctional materials for capacitive sensing applications, including both force and deformation sensors and touchpads. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/75500 |
DOI: | 10.1016/j.polymer.2020.123349 |
ISSN: | 0032-3861 |
Versão da editora: | https://www.sciencedirect.com/science/article/abs/pii/S0032386120311745 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CAlg - Artigos em revistas internacionais / Papers in international journals CDQuim - Artigos (Papers) |