Abstract
Recent developments in graphene oxide fibre (GO) processing include exciting demonstrations of hand woven textile structures. However, it is uncertain whether the fibres produced can meet the processing requirements of conventional textile manufacturing. This work reports for the first time the production of highly flexible and tough GO fibres that can be knitted using textile machinery. The GO fibres are made by using a dry-jet wet-spinning method, which allows drawing of the spinning solution (the GO dispersion) in several stages of the fibre spinning process. The coagulation composition and spinning conditions are evaluated in detail, which led to the production of densely packed fibres with near-circular cross-sections and highly ordered GO domains. The results are knittable GO fibres with Young’s modulus of ~7.9 GPa, tensile strength of ~135.8 MPa, breaking strain of ~5.9%, and toughness of ~5.7 MJ m−3. The combination of suitable spinning method, coagulation composition, and spinning conditions led to GO fibres with remarkable toughness; the key factor in their successful knitting. This work highlights important progress in realising the full potential of GO fibres as a new class of textile.
Highlights
Recent developments in graphene oxide fibre (GO) processing include exciting demonstrations of hand woven textile structures
The as-synthesised GO dispersion (2.8 ± 0.1 mg mL−1)[4,17] exhibited birefringence behaviour under cross-polarisers that is typical of fully nematic liquid crystalline (LC) materials (Fig. 1a–d)
This work has demonstrated the feasibility of producing graphene oxide (GO) fibres that are amenable to knitting using conventional textile machinery
Summary
Recent developments in graphene oxide fibre (GO) processing include exciting demonstrations of hand woven textile structures. In dry-jet wet-spinning of graphene nanoribbons (GNR), the introduction of an air gap between the spinneret and the coagulation bath resulted in superior mechanical properties due to the drawing of the jet (jet is referred to as the stable stream of spinning solution in air)[16]. The birefringence of the as-synthesised LCGO dispersion in a vial observed under cross polarised filters. (e)
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