Highly stretchable and conductiveMXene/polyurethane composite film coated on various flexible substrates for ultrasensitive strain sensors

Fu, Wenle; Wang, Qi; Líu, Hao; Cao, Junming; Xu, Jiyu; Yuan, Xueguang; Zhang, Yangan; Ren, Xiaomin

doi:10.1016/j.matlet.2022.132328

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…Meanwhile, for the wearable application, the biocompatibility of the materials with the human body is vital. Therefore, nontoxic and biocompatible polymers are used as substrates; they include natural rubber, thermoplastic elastomers (such as TPU), PDMS [50,51], and biodegradable polymers (poly lactic acid), poly (glycerol-co-sebacate) (PGS), and poly (lactic-co-glycolic acid) (PLGA) [52].…”

Section: Polymeric Substrates In Flexible Strain Sensorsmentioning

confidence: 99%

Key factors and performance criteria of wearable strain sensors based on polymer nanocomposites

Zhagiparova¹,

Kalimuldina²,

Diaby³

et al. 2023

Nano Futures

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Recently, there has been a growing demand for wearable electronic devices/strain sensors in soft robotics body-health monitoring, human-machine interfaces and human motion detection. Wearable strain sensors feature fast and multi-stimuli sensitivity, high flexibility, ultra-stretchability and biocompatibility. Although the progress in flexible strain sensors is exponential, the production of wearable sensors undergoes several challenges, such as reliability and reproducibility. An in-depth understanding of the sensing mechanism of the flexible strain sensors based-polymeric nanocomposites is needed to fabricate reliable and reproducible sensors and move from the prototype phase into the industry phase. In this review, types of strain sensors and key parameters such as linearity, gauge factor (sensitivity), hysteresis and durability are explained in the context of the recently published work. In addition, current challenges and perspectives in relation to the wearable strain sensors are delineated.

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Section: Polymeric Substrates In Flexible Strain Sensorsmentioning

confidence: 99%

Key factors and performance criteria of wearable strain sensors based on polymer nanocomposites

Zhagiparova¹,

Kalimuldina²,

Diaby³

et al. 2023

Nano Futures

View full text Add to dashboard Cite

show abstract

“…Recently, a new large family of two-dimensional (2D) transition metal carbides or nitrides, called MXene, has become a very hot conductive filler for CPCs and has gradually shown superiority to the counterparts already used by strain sensors due to its metallic conductivity and high specific surface area [ 33 , 34 , 35 , 36 , 37 , 38 ]. Moreover, abundant polar functional groups generated during the liquid phase etching process endow MXene with excellent hydrophilicity, enabling and facilitating their solution-based employment approaches [ 39 , 40 , 41 ].…”

Section: Introductionmentioning

confidence: 99%

A Flexible and Stretchable MXene/Waterborne Polyurethane Composite-Coated Fiber Strain Sensor for Wearable Motion and Healthcare Monitoring

Cao,

Jiang,

et al. 2024

Sensors

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Fiber-based flexible sensors have promising application potential in human motion and healthcare monitoring, owing to their merits of being lightweight, flexible, and easy to process. Now, high-performance elastic fiber-based strain sensors with high sensitivity, a large working range, and excellent durability are in great demand. Herein, we have easily and quickly prepared a highly sensitive and durable fiber-based strain sensor by dip coating a highly stretchable polyurethane (PU) elastic fiber in an MXene/waterborne polyurethane (WPU) dispersion solution. Benefiting from the electrostatic repulsion force between the negatively charged WPU and MXene sheets in the mixed solution, very homogeneous and stable MXene/WPU dispersion was successfully obtained, and the interconnected conducting networks were correspondingly formed in a coated MXene/WPU shell layer, which makes the as-prepared strain sensor exhibit a gauge factor of over 960, a large sensing range of over 90%, and a detection limit as low as 0.5% strain. As elastic fiber and mixed solution have the same polymer constitute, and tight bonding of the MXene/WPU conductive composite on PU fibers was achieved, enabling the as-prepared strain sensor to endure over 2500 stretching–releasing cycles and thus show good durability. Full-scale human motion detection was also performed by the strain sensor, and a body posture monitoring, analysis, and correction prototype system were developed via embedding the fiber-based strain sensors into sweaters, strongly indicating great application prospects in exercise, sports, and healthcare.

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“…Recently, a new large family of two-dimensional (2D) transition metal carbides or nitrides, called MXene, has become a very-hot conductive filler for CPCs and gradually shown the superiority to the counterparts already-used by strain sensors due to its metallic conductivity and high specific surface area [27][28][29][30][31]. Moreover, abundant polar functional groups generated during the liquid-phase etching process endow MXene with excellent hydrophilicity, enabling and facilitating the solution-based employment approaches of them [32].…”

Section: Introductionmentioning

confidence: 99%

Flexible and Stretchable MXene/Waterborne Polyurethane Composite-Coated Fiber Strain Sensor for Wearable Motion and Healthcare Monitoring

Cao,

Jiang,

et al. 2023

Preprint

View full text Add to dashboard Cite

Fiber-based flexible sensors have promising applications potential in human motion and healthcare monitoring, owing to their merits of lightweight, flexibility, and easy processing. Now, high-performance elastic fiber-based strain sensors with high sensitivity, large working range and excellent durability are in great demand. Herein, we have easily and quickly prepared a highly-sensitive, durable fiber-based strain sensor by dip-coating of highly-stretchable polyurethane (PU) elastic fiber in MXene/ waterborne polyurethane (WPU) dispersion solution. Benefiting from the electrostatic repulsion force between the negatively charged WPU and MXene sheets in the mixed solution, very homogeneous and stable MXene/WPU dispersion was successfully obtained and the interconnected conducting networks were correspondingly formed in coated MXene/WPU shell layer, which makes as-prepared strain sensor exhibit a gauge factor of over 960, a large sensing range of over 90% and detection limit as low as 0.5% strain. As elastic fiber and mixed solution have the same polymer constitute, tight bonding of MXene/WPU conductive composite on PU fibers was achieved, enabling the as-prepared strain sensor endure over 2500 stretching-releasing cycles and thus show good durability. Full-scale human motion detection was also performed by the strain sensor, and a body posture monitoring, analysis, and correction prototype system was developed via embedding the fiber-based strain sensors into sweater, strongly indicating the great application prospect in exercise, sports and healthcare.

show abstract

Highly stretchable and conductiveMXene/polyurethane composite film coated on various flexible substrates for ultrasensitive strain sensors

Cited by 7 publications

References 10 publications

Key factors and performance criteria of wearable strain sensors based on polymer nanocomposites

Key factors and performance criteria of wearable strain sensors based on polymer nanocomposites

A Flexible and Stretchable MXene/Waterborne Polyurethane Composite-Coated Fiber Strain Sensor for Wearable Motion and Healthcare Monitoring

Flexible and Stretchable MXene/Waterborne Polyurethane Composite-Coated Fiber Strain Sensor for Wearable Motion and Healthcare Monitoring

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