Robust cellulose-carbon nanotube conductive fibers for electrical heating and humidity sensing

Ma, Jianhua; Pu, Haihong; He, Pengxin; Zhao, Qiangli; Pan, Shaoxue; Wang, Yaowu; Wang, Chen

doi:10.1007/s10570-021-04026-y

Cited by 25 publications

(10 citation statements)

References 39 publications

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“…Firstly, the spinning dope should possess appropriate rheological properties during smooth extrusion to obtain TPU/ANF composite fibers through a wet spinning process. The diameter and length of the syringe needle were 410 μm and 25 mm, and this high aspect ratio (≈61) ensured that TPU and ANF microfibers were effectively aligned during extrusion 26 . Figure 2a shows the rheological properties of each spinning dope.…”

Section: Resultsmentioning

confidence: 99%

“…The diameter and length of the syringe needle were 410 μm and 25 mm, and this high aspect ratio (≈61) ensured that TPU and ANF microfibers were effectively aligned during extrusion. 26 Figure 2a shows the rheological properties of each spinning dope. We can see that all samples displayed a shear-thinning behavior, which is vital for the extrusion process.…”

Section: Preparation Process Of Tpu/ Anf@cnt Composite Fibermentioning

confidence: 99%

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CNTs‐coated TPU/ANF composite fiber with flexible conductive performance for joule heating, photothermal, and strain sensing

et al. 2023

J of Applied Polymer Sci

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Flexible and highly conductive fiber has attracted considerable attention with its massive potential in functional fabric, stretchable circuits, and wearable electronic devices. Herein, we prepared a novel secondary structure composite fiber based on aramid nanofibers (ANF)-reinforced thermoplastic polyurethane (TPU) fiber accompanied by carbon nanotube (CNT)-coated on its surface. The composite fibers' dispersibility, micromorphology, and application were systematically investigated. The TPU/ANF-0.5 wt% sample showed a robust reinforcing effect, as Young's modulus and tensile strength reached 17.2 and 20.2 MPa, respectively. Meanwhile, the conductive coating layer in the outer frame was formed via a TPU solution with 10 wt% CNT content, which gives the fiber excellent flexible electrical conductivity. Such a unique structural design enables the fiber to be closely attached to human skin and monitor human movement. In addition, this TPU/ANF@CNT composite fiber can also be used for light and electric heating. The photothermal equilibrium temperature can reach 120 C in 50 s, and the electrothermal equilibrium temperature increases to 62 C under 30 V. In summary, this secondary structure composite fiber with excellent electrical and mechanical properties might have great practical application potential in wearable electronic devices.

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Section: Resultsmentioning

confidence: 99%

Section: Preparation Process Of Tpu/ Anf@cnt Composite Fibermentioning

confidence: 99%

CNTs‐coated TPU/ANF composite fiber with flexible conductive performance for joule heating, photothermal, and strain sensing

et al. 2023

J of Applied Polymer Sci

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“…In particular, VPP processes slow down the polymerization rate of PEDOT, reducing PEDOT film defects as well as improving PEDOT conductivity. , It is worth noting that the electrical conductivity and tensile strength of PEDOT/RC-VPP described in this paper were considerably higher than those of the previously reported conductive fibers (Figure E). The CNT–cellulose fiber, graphene–cellulose fiber, PEDOT:PSS conductive fiber, polyaniline conductive fiber, and MWNT–cellulose fiber exhibited electrical conductivities and tensile strengths in the ranges of 0.9–12.7 S/cm and 5.4–185 MPa, 0.1–64.7 S/cm and 108–199.8 MPa, 3.6–201 S/cm and 86–259 MPa, 1–7.2 S/cm and 0.2–3 MPa, and 0.09–31 S/cm and 78.3–179 MPa, respectively. ,− This higher tensile strength of PEODT/RC-VPP may be due to the strong adhesion between the uniform PEDOT layer and RC fiber.…”

Section: Resultsmentioning

confidence: 99%

Hybrid Nanoarchitectonics with Conductive Polymer-Coated Regenerated Cellulose Fibers for Green Electronics

Kwon

Lee

Jeon

et al. 2022

ACS Sustainable Chem. Eng.

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Green electronics based on biodegradable polymers have received considerable attention as a solution to electronic waste (e-waste). Herein, we describe an efficient approach to constructing green conductive fibers, comprising poly(3,4-ethylenedioxythiophene) (PEDOT) and regenerated cellulose (RC), via a wet-spinning process and vapor-phase polymerization (VPP). Eco-friendly RC fibers were prepared as a support layer by wet spinning, and the conductive PEDOT layers were coated onto the surface of the RC fibers by the oxidation of EDOT monomers. We demonstrated that the vapor-phase-polymerized PEDOT/RC composite fibers (PEDOT/RC-VPP) exhibited approximately 17 times higher electrical conductivity (198.2 ± 7.3 S/cm), compared with that of the solution-phase-polymerized PEDOT/RC composite fibers (PEDOT/RC-SPP, 11.6 ± 0.6 S/cm). Importantly, PEDOT/RC-VPP exhibited a high tensile strength of 181 MPa, good flexibility, and long-standing electrical stability under ambient air conditions. Moreover, the obtained PEDOT/RC-VPP under 50% strain turned on a green light-emitting diode (LED), indicating the flexibility and stability of green conductive fibers. This strategy can be easily integrated into various electronic textiles for the development of next-generation wearable green electronics.

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“…The tensile strength of the resulting C/CNTs fibers was 185 MPa when the CNTs content was 20 wt %. The fiber surface was heated to 55 °C within 15 s at an applied voltage of 9 V (Figure f) …”

Section: Production Methodsmentioning

confidence: 99%

Section: Production Methodsmentioning

confidence: 99%

Research Progress on the Preparation of Flexible and Green Cellulose-Based Electrothermal Composites for Joule Heating Applications

Tao

Tian

Liang

et al. 2022

ACS Appl. Energy Mater.

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Cellulose-based electrothermal composites (CETCs) are a type of functional material that combines a cellulose substrate with a heat generator to form multifunctional electrothermal composites with outstanding mechanical properties, biodegradability, flexibility, and Joule heating performance. The forms of cellulose include nanocellulose, cellulose fibers, cellulose paper, and cellulose fabrics. The heat generators include carbon-based materials (e.g., graphene and carbon nanotubes), metal nanowires, metal carbides/nitrides, and other conductive polymers. With the increasing demand for clean energy, comfortable heating, and green raw materials, CETCs are expected to become one of the most promising materials used in electric heating products. To provide the latest research and innovative strategies, this review introduces the methods used to prepare CETCs; these include vacuum filtration, freeze-drying, wet spinning, solution casting, coating, in situ polymerization, and deposition. Additionally, applications and prospects of cellulose-based electrothermal composites in wearable heaters, soft electrothermal actuators, deicers and defrosters, and agricultural films are presented.

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Robust cellulose-carbon nanotube conductive fibers for electrical heating and humidity sensing

Cited by 25 publications

References 39 publications

CNTs‐coated TPU/ANF composite fiber with flexible conductive performance for joule heating, photothermal, and strain sensing

CNTs‐coated TPU/ANF composite fiber with flexible conductive performance for joule heating, photothermal, and strain sensing

Hybrid Nanoarchitectonics with Conductive Polymer-Coated Regenerated Cellulose Fibers for Green Electronics

Research Progress on the Preparation of Flexible and Green Cellulose-Based Electrothermal Composites for Joule Heating Applications

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