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MXene Composite and Coaxial Fibers with High Stretchability and Conductivity for Wearable Strain Sensing Textiles
Journal article   Open access   Peer reviewed

MXene Composite and Coaxial Fibers with High Stretchability and Conductivity for Wearable Strain Sensing Textiles

Shayan Seyedin, Simge Uzun, Ariana Levitt, Babak Anasori, Genevieve Dion, Yury Gogotsi and Joselito M Razal
Advanced functional materials, v 30(12), pp 1910504-n/a
17 Mar 2020
url
https://doi.org/10.1002/adfm.201910504View
Published, Version of Record (VoR)Open Access (License Unspecified) Open

Abstract

composite fibers strain sensors coaxial fibers MXene wearable body movement monitoring ESI Highly Cited Paper (Incites)
The integration of nanomaterials with high conductivity into stretchable polymer fibers can achieve novel functionalities such as sensing physical deformations. With a metallic conductivity that exceeds other solution‐processed nanomaterials, 2D titanium carbide MXene is an attractive material to produce conducting and stretchable fibers. Here, a scalable wet‐spinning technique is used to produce Ti3C2Tx MXene/polyurethane (PU) composite fibers that show both conductivity and high stretchability. The conductivity at a very low percolation threshold of ≈1 wt% is demonstrated, which is lower than the previously reported values for MXene‐based polymer composites. When used as a strain sensor, the MXene/PU composite fibers show a high gauge factor of ≈12900 (≈238 at 50% strain) and a large sensing strain of ≈152%. The cyclic strain sensing performance is further improved by producing fibers with MXene/PU sheath and pure PU core using a coaxial wet‐spinning process. Using a commercial‐scale knitting machine, MXene/PU fibers are knitted into a one‐piece elbow sleeve, which can track various movements of the wearer's elbow. This study establishes fundamental insights into the behavior of MXene in elastomeric composites and presents strategies to achieve MXene‐based fibers and textiles with strain sensing properties suitable for applications in health, sports, and entertainment. Conductive elastomeric composite and coaxial fibers are fabricated using Ti3C2Tx MXene, which show strain sensing properties by changing electrical resistance when stretched. The composite fibers are knitted into strain sensing textiles that can be worn directly and monitor the user's diverse body movements. MXene‐based fibers and textiles could cater to wearable applications such as off‐site health monitoring of patients.

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Highly Cited Paper 
Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Chemistry, Multidisciplinary
Chemistry, Physical
Materials Science, Multidisciplinary
Nanoscience & Nanotechnology
Physics, Applied
Physics, Condensed Matter
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