Highly Sensitive and Stretchable Carbon Nanotube/Fluoroelastomer Nanocomposite with a Double-Percolated Network for Wearable Electronics
Abstract
Abstract A smart stretchable material is developed from a composite of carbon nanotube (CNT) and fluoroelastomer (FKM), which is fabricated via an internal melt‐mixer method. A unique, double‐percolated, electrically conductive network is observed with ultralow percolation thresholds of 0.45 phr and 1.40 phr CNT. This provides the CNT/FKM nanocomposites with a wide range of strain sensitivity. Thin‐film nanocomposites at the first plateau of conductivity show an ultrahigh sensitivity with a gauge factor (GF) of 1010 at 23% strain for 0.6 phr and of 6750 at 34% strain for 1 phr. At the second plateau of conductivity, 1.5 phr nanocomposite corresponds to higher levels of strain of 78% strain with ultrahigh GF of more than 4 × 104 and 2 phr nanocomposite to almost 100% strain with GF of 1.3 × 105. The CNT/FKM nanocomposites possess a high elongation at break of 430% and up to 232% strain sensitivity. The unique distribution of CNTs in the polar fluoroelastomer FKM facilitates simultaneous high sensitivity and high stretchability, and improved mechanical strength over reported polymer‐based nanocomposite stretchable sensors. The novel, stretchable CNT‐based FKM conductors have great potential for wearable electronics such as stretchable sensors, stretchable light‐emitting diodes (LEDs), and human motion monitoring.
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Most sensors based on polymer nanocomposites often used high filler concentrations (>10wt%).
“In addition, most sensors based on polymer nanocomposites often used high filler concentrations (>10wt%) [73].”
From The emergence of AI-based wearable sensors for digital health technology: a review (2023) · cites this paper as [73]
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The emergence of AI-based wearable sensors for digital health technology: a review
Shajari, S., Kuruvinashetti, K., Komeili, A., & Sundararaj, U. (2023) · Sensors · doi:10.3390/s23239498 · Cited by 535 · see citing works
Self-citation
- Authors
- Shajari, S., Mahmoodi, M., Rajabian, M., Karan, K., Sundararaj, U., & Sudak, L. J.
- Affiliations
- University of Calgary (CA)
- Corresponding author
- Sundararaj, Uttandaraman
- Sudak, Les Jozef
- Venue
- Advanced Electronic Materials
- Publisher
- Wiley
- Published
- 2020-01-15
- Volume
- 6
- Issue
- 2
- ISSN
- 2199-160X (ISSN-L)
- OpenAlex
- W2999277767
- Cited by
- 58
- References
- 91
- Citations by year
- 2026: 2 · 2025: 5 · 2024: 10 · 2023: 10 · 2022: 14 · 2021: 10 · 2020: 7
- FWCI
- 3.22
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Advanced Electronic Materials (publishedVersion)
- Funders
- Natural Sciences and Engineering Research Council of Canada (05503/2015)
- Alberta Innovates - Technology Futures
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
- Physical Sciences › Materials Science › Materials Chemistry › Carbon Nanotubes in Composites
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Nanomaterials and Printing Technologies
- Keywords
- stretchable conductors, percolation threshold, strain sensitivity, gauge factor, wearable electronics, stretchable sensors, fluoroelastomer, human motion monitoring
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