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TitleDevelopment of water-based printable piezoresistive sensors for large strain applications
Author(s)Gonçalves, B. F.
Oliveira, J.
Costa, P.
Correia, Vítor Manuel Gomes
Martins, Pedro Libânio Abreu
Botelho, Gabriela
Lanceros-Méndez, S.
KeywordsPrinted sensors
Green chemistry
Piezoresistive properties
Smart materials
Stretchable sensors
Issue dateMar-2017
JournalComposites Part B: Engineering
CitationGonçalves, B. F., Oliveira, J., Costa, P., Correia, V., Martins, P., Botelho, G., & Lanceros-Mendez, S. (2017). Development of water-based printable piezoresistive sensors for large strain applications. Composites Part B: Engineering, 112, 344-352
Abstract(s)Polymer based smart materials and, in particular, piezoresistive ones, are increasingly being used in a wide variety of applications ranging from automotive components to medical devices. This work reports on water-based piezoresistive polymer composites developed from thermoplastic poly(vinyl alcohol) (PVA) filled with carbon nanotubes (MWCNT) for the fabrication of high performance piezoresistive materials and sensors. PVA is a water-soluble synthetic polymer with suitable mechanical properties for the development of large strain sensors. MWCNT/PVA nanocomposites with good linearity between deformation and electrical resistance variation and with gauge factors up to 3 were achieved. Further, the materials were formulated in the form of inks for spray and screen printing of the sensors, which demonstrated a good performance for strain sensing both under laboratory tests conditions and when connected to a readout and communication system. Therefore, polymer based piezoresistive sensors were developed by a green approach and capable to be implemented by scalable printing technologies
Publisher version
AccessRestricted access (UMinho)
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)

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