A multi-functional wearable sensor based on carbon nanomaterials reinforced TPU fiber with high sensitivity

Li, Sishi; Fu, Qiang; Pan, Chen

doi:10.1016/j.jallcom.2022.167041

Cited by 20 publications

(16 citation statements)

References 39 publications

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“…56 Carbon black, Gr, and CNTs are commonly combined with electrospun micro/nanofibers to create versatile flexible strain sensors. Li et al 57 fabricated TPU nanofibrous membranes via electrospinning, which were subsequently impregnated with carbon black and CNTs. The resulting membrane exhibits impressive tensile properties as well as excellent electrical conductivity.…”

Section: Flexible Capacitive Sensorsmentioning

confidence: 99%

Electrospun Micro/Nanofiber-Based Biomechanical Sensors

Li,

Zhang,

et al. 2023

ACS Appl. Polym. Mater.

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Electrospun micro/nanofibers have gained popularity recently for flexible biomechanical sensors because of their advantages of lightness, compatibility, breathability, mechanical deformability, and function integrability, etc., offering them unprecedented sensitivities and versatilities. With increasing advances in the digital era, existing electrospun flexible sensors are not capable of catering to the demands of multiscenario applications including wearable electronics, interactive interfaces, and real-time continuous health monitoring. To ease and expedite their developments, we thoroughly reviewed their latest progress regarding design, preparation, and optimization. First, a brief overview of the design approaches of electrospun flexible biomechanical sensors based on the working mechanism is highlighted. Then, two kinds of preparation strategies including direct electrospinning and post-treatment-assisted electrospinning are discussed in detail. Further, four means for optimizing the performance and endowing multifunctions to electrospun flexible biomechanical sensors are demonstrated in terms of processing. Accordingly, the challenges and the potential solutions related to this topic are addressed, providing a future direction for the next generation of electrospun flexible biomechanical sensors.

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Section: Flexible Capacitive Sensorsmentioning

confidence: 99%

Electrospun Micro/Nanofiber-Based Biomechanical Sensors

Li,

Zhang,

et al. 2023

ACS Appl. Polym. Mater.

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“…Because the demand for soft electronics has increased substantially, various types of thermoplastic polyurethanes (TPUs) have attracted significant attention as soft materials owing to their convenient fabrication, remarkable stretchability, durability, flexibility, and elasticity. − An advantage of TPU is that it can be conveniently incorporated into nano/microfunctional materials . Many TPUs have been dissolved in organic solvents and then blended with conductive nanofillers such as metal nanoparticles, carbon materials, and MXene. , Therefore, conductive TPUs have been widely utilized as strain sensors for healthcare monitoring and motion detection .…”

Section: Introductionmentioning

confidence: 99%

Effects of Fabrication Process of Conductive TPU Composites on Dual-Function Gas Sensor and Energy Devices

Choi,

Han,

Yim

2024

ACS Appl. Electron. Mater.

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The tunable mechanical and stretchable properties of thermoplastic polyurethane (TPU), in conjunction with its convenience of surface modification, have attracted interest for various sensing materials. This study examines the process of creating conductive and flexible TPU composites by incorporating carbon materials such as graphene oxide (GO) and polypyrrole (PPy). The suitability of these composites for ammonia gas sensing and as supercapacitor electrode materials is investigated for evaluating the potential of the dual-functioning hybrid composites. Two fabrication process sequences are examined: one involves surrounding TPU with GO and subsequently adding PPy, and the other involves wrapping TPU with PPy and incorporating GO. The results reveal that the fabrication process sequence can be adapted to control the mechanical and electrical properties of TPU composites. Furthermore, the conductive TPU composites exhibit significant potential for dual-function applications as both ammonia gas sensors and supercapacitor electrode materials. Among the TPU composites tested, TPU-PPy-GO demonstrates the best performance in terms of gas sensing and supercapacitor capabilities. A further evaluation of TPU-PPy-GO focuses on its selectivity and sensitivity to other reducing gases (triethylamine, ethanol, and methanol) and its galvanostatic charge−discharge properties for energy-storage electrode applications. By modification of the fabrication sequence, conductive TPU composites can be used extensively as chemical sensors and energy storage materials.

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“…Besides, Organic solvent method was simple and costeffective to form the network structure. Some novel technologies could be combined with organic solvent method to construct conductive networks with various three-dimensional structures, [42][43][44] such as template method, 45 electrospinning method 46 and spray deposition method. 47 Meanwhile, the preparation process and composition were complex, which greatly reduced the performance of the matrix itself.…”

Section: Introductionmentioning

confidence: 99%

Thin and high conductive multi‐walled carbon nanotubes/polydimethylsiloxane composite film prepared via solvent method as strain sensors

Fu,

Wang,

Zhong

et al. 2024

Polymers for Advanced Techs

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Flexible strain sensors based on conductive fillers and flexible polymers possessed significant advantages in human motion detection. Preparing a strain sensing layer with high electrical conductivity and excellent mechanical property under high content of conductive filler contributed to the stability of flexible strain sensors. In this study, MWCNTs/PDMS composite film was prepared by the organic solvent method. The microstructure, electrical conductivity, mechanical property, and piezoresistive characteristics of the composite film at different MWCNTs contents were characterized and discussed. When the mass fraction of MWCNTs in the composite film was 5%, the composite film exhibited a high electrical conductivity of 9.56 S/m while maintaining ideal mechanical properties, and the film thickness was just about 180 μm. The relationship between electrical signals and film strain was performed. The piezoresistive characteristic results demonstrated that the prepared composite film could be used as flexible strain sensor for human motion detection. The prepared thin MWCNTs/PDMS composite film in this paper illustrated high conductive and desired flexibility, and was an alternative material for human motion detection.

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A multi-functional wearable sensor based on carbon nanomaterials reinforced TPU fiber with high sensitivity

Cited by 20 publications

References 39 publications

Electrospun Micro/Nanofiber-Based Biomechanical Sensors

Electrospun Micro/Nanofiber-Based Biomechanical Sensors

Effects of Fabrication Process of Conductive TPU Composites on Dual-Function Gas Sensor and Energy Devices

Thin and high conductive multi‐walled carbon nanotubes/polydimethylsiloxane composite film prepared via solvent method as strain sensors

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