Dry spinning approach to continuous graphene fibers with high toughness

Tian, Qi; Xu, Zhen; Liu, Yingjun; Fang, Bo; Peng, Li; Xi, Jiabin; Zheng, Li; Gao, Chao

doi:10.1039/c7nr03895j

Cited by 77 publications

(46 citation statements)

References 40 publications

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“…GO fibers can be reduced to graphene fibers by HI. The mechanical strength and toughness of the graphene fibers were 375 MPa and 19.12 MJ m −3 , respectively . Typically, the prepared fibers by dry spinning method usually exhibit better mechanical properties than those by wet spinning.…”

Section: Preparation Of 2d Crystal–based Fibersmentioning

confidence: 99%

2D Crystal–Based Fibers: Status and Challenges

Meng

Kong

et al. 2019

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2D crystals are emerging new materials in multidisciplinary fields including condensed state physics, electronics, energy, environmental engineering, and biomedicine. To employ 2D crystals for practical applications, these nanoscale crystals need to be processed into macroscale materials, such as suspensions, fibers, films, and 3D macrostructures. Among these macromaterials, fibers are flexible, knittable, and easy to use, which can fully reflect the advantages of the structure and properties of 2D crystals. Therefore, the fabrication and application of 2D crystal–based fibers is of great importance for expanding the impact of 2D crystals. In this Review, 2D crystals that are successfully prepared are overviewed based on their composition of elements. Subsequently, methods for preparing 2D crystals, 2D crystals dispersions, and 2D crystal–based fibers are systematically introduced. Then, the applications of 2D crystal–based fibers, such as flexible electronic devices, high‐efficiency catalysis, and adsorption, are also discussed. Finally, the status‐of‐quo, perspectives, and future challenges of 2D crystal–based fibers are summarized. This Review provides directions and guidelines for developing new 2D crystal–based fibers and exploring their potentials in the fields of smart wearable devices.

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Section: Preparation Of 2d Crystal–based Fibersmentioning

confidence: 99%

2D Crystal–Based Fibers: Status and Challenges

Meng

Kong

et al. 2019

Small

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“…Unfortunately, for the best of our knowledges, the studies of the dry spinning GFs are still very limited. When this paper is still under review, Gao’s group firstly reported dry spinning GFs 25 . Even though extruding high concentrated GO gel has been announced by other groups in their investigation of 3D printing graphene structures 26 , 27 , the rheological properties of GO, as well as its physical impact on the drying dynamics, micro-structures and mechanical properties of the prepared fibers still need to be clarified.…”

Section: Introductionmentioning

confidence: 99%

Dry Spin Graphene Oxide Fibers: Mechanical/Electrical Properties and Microstructure Evolution

Chang

Zhong

et al. 2018

Sci Rep

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Dry-spinning method is extensively employed in fiber industry, comparing to the counter-part of wet-spinning process, it has advantages of environmentally friendly, high yield rate and no need for purification. Here, we report the synthesis of graphene oxide (GO) fibers via dry spinning GO inks with extremely high concentrations. The proper rheology properties of such GO inks allow us to dry spin GO fiber directly. Various dry spinning conditions are investigated, and the relationship between mechanical performance and micro-structure of the obtained GO fiber are established. We found that the existence of larger GO liquid crystal domains does not necessarily result to higher mechanical properties, and it is because those large GO liquid crystal domains evolve into thick GO films during drying process and thus prevent the intimate compaction of the whole GOF and leave behind gaps. This is detrimental for the mechanical properties, and thus the dry spin GOF are much weaker than that of wet spin ones. Importantly, Barus effects, that generally arise during the melt spinning of polymers, were not observed, indicating that caution must be taken when classical polymer rheology theories are applied to investigate the dynamic behaviors of GO solution.

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“…The mechanical properties of the fiber can be affected controlling take up speed, length to diameter ratio of the spinneret, environment or temperature, and spinning rate [ 126 , 145 ]. Additionally, subjecting the dry-spun fiber to a post-treatment agent or post-formation drawing can enhance mechanical properties [ 126 ].…”

Section: Fabrication Methodsmentioning

confidence: 99%

Protein-Based Fiber Materials in Medicine: A Review

et al. 2018

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Fibrous materials have garnered much interest in the field of biomedical engineering due to their high surface-area-to-volume ratio, porosity, and tunability. Specifically, in the field of tissue engineering, fiber meshes have been used to create biomimetic nanostructures that allow for cell attachment, migration, and proliferation, to promote tissue regeneration and wound healing, as well as controllable drug delivery. In addition to the properties of conventional, synthetic polymer fibers, fibers made from natural polymers, such as proteins, can exhibit enhanced biocompatibility, bioactivity, and biodegradability. Of these proteins, keratin, collagen, silk, elastin, zein, and soy are some the most common used in fiber fabrication. The specific capabilities of these materials have been shown to vary based on their physical properties, as well as their fabrication method. To date, such fabrication methods include electrospinning, wet/dry jet spinning, dry spinning, centrifugal spinning, solution blowing, self-assembly, phase separation, and drawing. This review serves to provide a basic knowledge of these commonly utilized proteins and methods, as well as the fabricated fibers’ applications in biomedical research.

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Dry spinning approach to continuous graphene fibers with high toughness

Cited by 77 publications

References 40 publications

2D Crystal–Based Fibers: Status and Challenges

2D Crystal–Based Fibers: Status and Challenges

Dry Spin Graphene Oxide Fibers: Mechanical/Electrical Properties and Microstructure Evolution

Protein-Based Fiber Materials in Medicine: A Review

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