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TitlePiezoresistive response of spray-printed carbon nanotube/poly(vinylidene fluoride) composites
Author(s)Ferreira, Armando
Lanceros-Méndez, S.
KeywordsPolymer-matrix composites (PMCs)
Smart materials
Electrical properties
A. Polymer-matrix composites (PMCs)
A. Smart materials
B. Electrical properties
Issue date2016
PublisherElsevier Ltd
JournalComposites Part B: Engineering
Abstract(s)The performance of piezoresistive materials based on carbon nanotubeipoly(vinylidene fluoride), CNT/PVDF, composites prepared by spray printing is reported. It is shown that for a CNT concentration close to the percolation threshold, where the piezoresistive response is the largest, the electromechanical response, characterized by the gauge factor, reach values up to 4.4, similar to the values obtained for hot pressing prepared materials. Further, it is demonstrated that tunnelling is the main mechanism responsible for the electrical response, independently of the preparation method of the material or the microstructural features. The large value of the gauge factor and the easy processing method demonstrates the suitability of these materials for cost effective and large-scale sensor applications.
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AccessRestricted access (UMinho)
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)

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