Journal
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
Volume 54, Issue 20, Pages 2092-2103Publisher
WILEY
DOI: 10.1002/polb.24118
Keywords
additional information; flexible composites; multifunctional materials; piezoresistive properties; printed sensors; smart materials; soft materials; thermoplastic elastomers
Categories
Funding
- Portuguese Foundation for Science and Technology (FCT) [UID/FIS/04650/2013]
- ERDF funds through Portuguese Operational Programme for Competitiveness and Internationalization - COMPETE
- national funds through FCT [PTDC/EEI-SII/5582/2014, PTDC/CTM-ENE/5387/ 2014]
- FCT [SFRH/BPD/ 98219/2013, SFRH/BD/111478/2015, SFRH/BPD/ 97739/2013]
- Basque Government Industry Department under ELKARTEK Program
- Diputacion Foral de Bizkaia
- European Union
- Marie Curie Actions People Grant [267230]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/111478/2015] Funding Source: FCT
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Composites based on biocompatible thermoplastic elastomer styrene-ethylene/butylene-styrene (SEBS) as matrix and multi-walled carbon nanotubes (MWCNT) as nanofillers show excellent mechanical and piezoresistive properties from low to large deformations. The MWCNT/SEBS composites have been prepared following a green solvent approach, to extend their range of applicability to biomedical applications. The obtained composites with 2, 4, and 5 wt % MWCNT content provide suitable piezoresistive response up to 80% deformation with a piezoresistive sensibility near 2.7, depending on the applied strain and MWCNT content. Composite sensors were also developed by spray and screen printing and integrated with an electronic data acquisition system with RF communication. The possibility to accurately control the composites properties and performance by varying MWCNT content, viscosity, and mechanical properties of the polymer matrix, shows the large potential of the system for the development of large deformation printable piezoresistive sensors. (C) 2016 Wiley Periodicals, Inc.
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