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Scalable One-Step Wet-Spinning of Graphene Fibers and Yarns from Liquid Crystalline Dispersions of Graphene Oxide: Towards Multifunctional Textiles

Jalili, Rouhollah, Aboutalebi, Seyed Hamed, Esrafilzadeh, Dorna, Shepherd, Roderick L, Chen, Jun, Aminorroaya-Yamini, Sima, Konstantinov, Konstantin, Minett, Andrew I, Razal, Joselito M and Wallace, Gordon G 2013, Scalable One-Step Wet-Spinning of Graphene Fibers and Yarns from Liquid Crystalline Dispersions of Graphene Oxide: Towards Multifunctional Textiles, Advanced Functional Materials, vol. 23, no. 43, pp. 5345-5354, doi: 10.1002/adfm.201300765.

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Title Scalable One-Step Wet-Spinning of Graphene Fibers and Yarns from Liquid Crystalline Dispersions of Graphene Oxide: Towards Multifunctional Textiles
Author(s) Jalili, Rouhollah
Aboutalebi, Seyed Hamed
Esrafilzadeh, Dorna
Shepherd, Roderick L
Chen, Jun
Aminorroaya-Yamini, Sima
Konstantinov, Konstantin
Minett, Andrew I
Razal, Joselito MORCID iD for Razal, Joselito M orcid.org/0000-0002-9758-3702
Wallace, Gordon G
Journal name Advanced Functional Materials
Volume number 23
Issue number 43
Start page 5345
End page 5354
Total pages 10
Publisher Wiley
Place of publication London, UK
Publication date 2013
ISSN 1616-301X
Keyword(s) Graphene oxide
Liquid crystals
Fibers
Multifunctional textiles
Rheology
Summary Key points in the formation of liquid crystalline (LC) dispersions of graphene oxide (GO) and their processability via wet-spinning to produce long lengths of micrometer-dimensional fibers and yarns are addressed. Based on rheological and polarized optical microscopy investigations, a rational relation between GO sheet size and polydispersity, concentration, liquid crystallinity, and spinnability is proposed, leading to an understanding of lyotropic LC behavior and fiber spinnability. The knowledge gained from the straightforward formulation of LC GO “inks” in a range of processable concentrations enables the spinning of continuous conducting, strong, and robust fibers at concentrations as low as 0.075 wt%, eliminating the need for relatively concentrated spinning dope dispersions. The dilute LC GO dispersion is proven to be suitable for fiber spinning using a number of coagulation strategies, including non-solvent precipitation, dispersion destabilization, ionic cross-linking, and polyelectrolyte complexation. One-step continuous spinning of graphene fibers and yarns is introduced for the first time by in situ spinning of LC GO in basic coagulation baths (i.e., NaOH or KOH), eliminating the need for post-treatment processes. The thermal conductivity of these graphene fibers is found to be much higher than polycrystalline graphite and other types of 3D carbon based materials.
Language eng
DOI 10.1002/adfm.201300765
Field of Research 109999 Technology not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30061320

Document type: Journal Article
Collection: Faculty of Science, Engineering and Built Environment
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