Environmentally-friendly conductive cotton fabric as flexible strain sensor based on hot press reduced graphene oxide
By Jiesheng Ren, Chaoxia Wang, Xuanyue Zhang, T. Carey, Kunlin Chen, Yunjie Yin, F. Torrisi. 2017
329 citations recorded by the source corpus.
A flexible conductive cotton fabric was demonstrated by formulation and deposition of a graphene oxide (GO) dispersion onto a cotton fabric by vacuum filtration. The deposited GO amount was controlled by the concentration and volume of the GO dispersion. The GO was reduced by a hot press method at 180 °C for 60 min, and no chemical reductant was needed in both the deposition and reduction processes. The carbon-oxygen ratio increased from 1.77 to 3.72 after the hot press reduction. The as-prepared flexible conductive cotton fabric showed a sheet resistance as low as 0.9 kΩ/sq. The sheet resistance of the conductive cotton fabric only increased from ∼0.9 kΩ/sq to ∼1.2 kΩ/sq after 10 washing cycles, exhibiting good washability. The conductive cotton fabric showed viability as a strain sensor even after 400 bending cycles, in which the stable change in the electrical resistance went from ∼3500 kΩ under tensile strain to ∼10 kΩ under compressive strain. This cost-effective and environmentally-friendly method can be easily extended to scalable production of reduced GO based flexible conductive cotton fabrics.
Subfields: Biomedical Engineering, Materials Chemistry, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/026cf0ec7b7822196b62a824ea230e90fdb0135f
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In Biomedical Engineering
Citations in the corpus
- Polydimethylsiloxane (PDMS)-Based Flexible Resistive Strain Sensors for Wearable Applications (2018, methodology): “The filtration method [61,62] is a powerful tool for obtaining uniform composite films with filter membranes; the films can be used as a sensing element converting the mechanical deformation into electrical signals.”
- Flexible Sensors—From Materials to Applications (2019, background): “Not only the functionalisation of cotton fabric was explored for the creation of smart textiles [98,354], but a broad range of commercially available fabrics (100% Polyester, 65% Polyester and 35% cotton, 100% cotton) were treated to become pressure sensing textiles (Figure 18e) [354].”