DataVXACS Applied Materials & InterfacesPaper
journal article·2019-12-11

Highly Sensitive Piezoresistive Graphene-Based Stretchable Composites for Sensing Applications

P. Costa, S. Gonçalves, H. Mora, S. A. C. Carabineiro, J. C. Viana, S. Lanceros-Mendez

ACS Applied Materials & Interfaces· Volume 11· Issue 49
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Source abstract

Abstract

Nanocarbonaceous materials with specific geometries and physicochemical properties allow the development of high-performance polymer-based smart composite materials. Among them, chemical treatments of graphene allow tailoring its electrical conductivity and, therefore, tuning functional response of materials for sensing applications. Polymer-based nanocomposites have been developed from styrene-ethylene-butylene-styrene (SEBS), a high deformation thermoplastic elastomer, and different graphene-based fillers, including graphene oxide (GO), reduced graphene oxide (rGO), and graphene nanoplatelets (G-NPLs). It is shown that the electrical conductivity shows a percolation threshold around 2 wt % for GO and rGO, remaining nearly independent of the filler content for G-NPL filler contents up to 6 wt %. Furthermore, GO/SEBS and rGO/SEBS composites show high piezoresistive sensibility with gauge factors ranging from 15 up to 120 for strains up to 10%. Thus, GO/SEBS and rGO/SEBS composites can represent a new generation of materials for strain sensor applications, as demonstrated in their implementation in a hand glove prototype with finger movement monitoring.
Source: openalex_inverted_index · Quality: baseline

Research context

PolymersNanomaterialsComposites

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Conducting polymers and applications · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Center of Physics, University of Minho, 4710-057 Braga, Portugal

Institute for Polymers and Composites IPC, University of Minho, 4804-533 Guimarães, Portugal

Centro ALGORITMI, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal

EngageLab, University of Minho, 4810-453 Guimarães, Portugal

Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal

Laboratory of Catalysis and Materials (LCM), Associate Laboratory LSRE-LCM, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal

BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain

IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain

Funding

European Commission · European Regional Development Fund · Ministerio de Econom?a y Competitividad · Eusko Jaurlaritza · European Social Fund · Funda??o para a Ci?ncia e a Tecnologia

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