Hollow graphene fibres of highly ordered structure via coaxial wet spinning with application to multi-functional flexible wearables

Zhang, Huanxia; Wu, Wen; Ma, Hui; Cao, Jian

doi:10.1016/j.colsurfa.2021.126193

Cited by 13 publications

(6 citation statements)

References 47 publications

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“…demonstrates high structural flexibility and integrity, which can be warped and knotted to itself without causing the GO coating to break or peel off (see figure S4(c) in S.I.). It is also noted that the skin effect inevitably appears in the previously reviewed methods [38,44] during the flow-driven assembly processes. For instance, HGFs fabricated via the spinning-injection method [44] could normally possess collapsed walls due to the unstable stress field initiated during the winding collection and drying processes, since their hollow building blocks are not structurally supported during the whole manufacturing process.…”

Section: Resultsmentioning

confidence: 99%

“…It is also noted that the skin effect inevitably appears in the previously reviewed methods [38,44] during the flow-driven assembly processes. For instance, HGFs fabricated via the spinning-injection method [44] could normally possess collapsed walls due to the unstable stress field initiated during the winding collection and drying processes, since their hollow building blocks are not structurally supported during the whole manufacturing process. On the other hand, our strategy utilizes the silk thread as the continuous hollow structure former which can maintain a consistent and robust hollow structure of HGFs throughout the entire wet-spinning process and avoids the skin effect.…”

Section: Resultsmentioning

confidence: 99%

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Controllable assembly of continuous hollow graphene fibers with robust mechanical performance and multifunctionalities

Shi¹,

Dai²,

Ni³

et al. 2022

Nanotechnology

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Macroscopic conformation of individual graphene sheets serves as the backbone of translating their intrinsic merits towards multifunctional practical applications. However, controllable and continuous assemblies of graphene-based nanomaterials to create stable macroscopic structural components are always in face of great challenge. We have developed a scalable converging-flow assisted wet-spinning methodology for continuously fabricating hollow graphene fibers (HGFs, the newest variation of solid graphene fibers) with high quality. The degradable silk thread is selectively utilized as the continuous hollow structure former that holds the coaxially stacked graphene sheets aligned through the converging-flow modulating process. For the first time, we have created the longest freestanding HGF in length of 2.1 m. The continuous HGFs are in an average diameter of 180 μm and with 4-8 μm adjustable wall thicknesses. The optimal HGF demonstrates an average tensile strength of 300 MPa and modulus of 2.49 GPa (comparable to typical solid graphene fibers, but the highest among the reported HGFs in literature) and an exceptional failure elongation of 10.8%. Additionally, our continuous HGFs exhibit spontaneous resistive response to thermal and strain stimuli (in form of large deformations and human motions), offering great potential for developing multifunctional sensors. We envision that this work demonstrates an effective and well-controlled macroscopic assembly methodology for the scaled-up mass production of HGFs.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Controllable assembly of continuous hollow graphene fibers with robust mechanical performance and multifunctionalities

Shi¹,

Dai²,

Ni³

et al. 2022

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…Different types of 1D fiber based composite fabricated by wet-spinning method have been reported. 65 He et al 66 proposed a new-type stretchable conductive composite fiber strain sensor made up multiwalled carbon nanotubes (MWCNTs) and thermoplastic polyurethane (TPU) elastomer by wet spinning the MWC NTs/TPU suspension. The conductivity of the fiber composite could be adjusted by changing the proportion of MWCNTs to TPU.…”

Section: D Fibermentioning

confidence: 99%

Recent development of conductive polymer composite‐based strain sensors

Wang

Wan

Gao

2023

Journal of Polymer Science

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In recent decades, flexible and wearable strain sensor has shown promising application prospects in human motion detection, medical rehabilitation, human‐computer interface, etc. Conductive polymer composites (CPCs) composed of conductive fillers and elastic polymers demonstrate the merits of excellent flexibility, high stretchability, and good tensile recovery. They are usually used as flexible strain sensors with large working range and high sensitivity. This review introduces in detail the preparation, morphologies and strain sensing performance of different CPC sensors including one‐dimensional fibers, two‐dimensional films, three‐dimensional foams and hydrogels. CPCs with different structures show their unique advantages in reducing the percolation threshold and/or improving the sensing performance. The multi‐functionalities of CPC strain sensors with extended applications are also reviewed. Finally, we summarize the current challenges and outlook the future development of the CPC strain sensors.

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“…Jia et al produced lignin-polyacrylonitrile hollow fibers that present great potential for a wide range of applications, including micro reactors, and channel for gases or liquids transfer [143]. Polyacrylonitrile hollow fibers have also been developed for storage and adsorption devices [158] and hollow graphene fibers have been proposed for flexible wearable applications [159]. In recent years, research on the use of hollow, wet-spun fibers for biomedical applications has arisen and it is predicted that.…”

Section: Hollowmentioning

confidence: 99%

Tunable Spun Fiber Constructs in Biomedicine: Influence of Processing Parameters in the Fibers’ Architecture

et al. 2022

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Electrospinning and wet-spinning have been recognized as two of the most efficient and promising techniques for producing polymeric fibrous constructs for a wide range of applications, including optics, electronics, food industry and biomedical applications. They have gained considerable attention in the past few decades because of their unique features and tunable architectures that can mimic desirable biological features, responding more effectively to local demands. In this review, various fiber architectures and configurations, varying from monolayer and core-shell fibers to tri-axial, porous, multilayer, side-by-side and helical fibers, are discussed, highlighting the influence of processing parameters in the final constructs. Additionally, the envisaged biomedical purposes for the examined fiber architectures, mainly focused on drug delivery and tissue engineering applications, are explored at great length.

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Hollow graphene fibres of highly ordered structure via coaxial wet spinning with application to multi-functional flexible wearables

Cited by 13 publications

References 47 publications

Controllable assembly of continuous hollow graphene fibers with robust mechanical performance and multifunctionalities

Controllable assembly of continuous hollow graphene fibers with robust mechanical performance and multifunctionalities

Recent development of conductive polymer composite‐based strain sensors

Tunable Spun Fiber Constructs in Biomedicine: Influence of Processing Parameters in the Fibers’ Architecture

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