Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/81716
Título: | Flexible 3D printed acrylic composites based on polyaniline/multiwalled carbon nanotubes for piezoresistive pressure sensors |
Autor(es): | Arias-Ferreiro, Goretti Lasagabáster-Latorre, Aurora Ares-Pernas, Ana Dopico-García, M. Sonia Pereira, N. Costa, Pedro Filipe Ribeiro Lanceros-Méndez, S. Abad, María-José |
Palavras-chave: | Polyaniline MWCNTs DLP Stereolithography Piezoresistive pressure sensor Flexible electronics digital light processing multi-walled carbon nanotubes piezoresistive pressure sensors |
Data: | Dez-2022 |
Editora: | Wiley |
Revista: | Advanced Electronic Materials |
Resumo(s): | The development of tunable UV-curable polymeric composites for functional applications, taking into consideration environmental issues and additive manufacturing technologies, is a research topic with relevant challenges yet to be solved. Herein, acrylic composites filled with 0–3 wt.%. polyaniline/ multiwalled carbon nanotubes (PANI/MWCNT) are prepared by Digital Light Processing (DLP) in order to tailor morphology, thermal, mechanical, and electromechanical properties. Viscosity, real-time infrared spectroscopy, and cure depth tests allow optimizing resin composition for suitable DLP printing. 2 wt.% is the maximum filler content reproducibly embedded in the polymer matrix. The advantages of PANI/MWCNT (50/50 wt.%) compared with single-component composites include safety issues, enhanced printability, increased electrical conductivity and thermal stability, and lower electrical percolation threshold (0.83 wt.%). Above this threshold the composites display excellent piezoresistive response, no hysteresis, and stability for over 400 compression cycles. The pressure sensibility (PS) of 2 wt.% composites decreases with applied pressure from PS ≈ 15 to 0.8 Mpa−1 for maximum pressures of 0.02 and 0.57 MPa, respectively. A proof-of-concept of the functionality of the novel materials is developed in the form of a tactile sensor, demonstrating their potential for pressure sensing applications as cost-effective, sustainable, and flexible materials for printed electronics. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/81716 |
DOI: | 10.1002/aelm.202200590 |
ISSN: | 2199-160X |
e-ISSN: | 2199-160X |
Versão da editora: | https://onlinelibrary.wiley.com/doi/full/10.1002/aelm.202200590 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
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Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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11.pdf Acesso restrito! | 1,26 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons