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Fabrication of Coaxial Wet‐Spun Graphene–Chitosan Biofibers
Author(s) -
Mirabedini Azadeh,
Foroughi Javad,
Thompson Brianna,
Wallace Gordon G.
Publication year - 2016
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201500201
Subject(s) - materials science , graphene , coaxial , spinning , composite material , oxide , fabrication , chitosan , ascorbic acid , ultimate tensile strength , conductivity , modulus , nanotechnology , chemical engineering , electrical engineering , metallurgy , medicine , chemistry , alternative medicine , food science , pathology , engineering
One‐step continuous wet‐spinning of coaxial electroactive fibres of chitosan/graphene oxide (Chit/GO) via a facile method is introduced for the first time, eliminating the need for post‐treatment processes. Spinnability of coaxial fibres as well as their characterization for several properties is investigated. L‐ascorbic acid was found to reduce graphene oxide under mild conditions to create conductivity in the final fibre. As‐prepared fibres were found to be cytocompatible with good electrical conductivity and mechanical properties. SEM images from the cross‐section of Chit/GO fibres showed an irregular shaped multifilament GO fibre covered with a cylinder‐shaped sheath of chitosan. Coaxial fibres had an ultimate tensile stress and elastic modulus that increased 8 500% and 3 350%, respectively compared to the graphene oxide fibres alone.