Fabrication of Coaxial Wet-Spun Graphene-Chitosan Biofibers
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 in...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
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| Online Access: | https://hdl.handle.net/10356/101146 http://hdl.handle.net/10220/38695 |
| _version_ | 1811693557180792832 |
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| author | Mirabedini, Azadeh Foroughi, Javad Thompson, Brianna Wallace, Gordon G. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Mirabedini, Azadeh Foroughi, Javad Thompson, Brianna Wallace, Gordon G. |
| author_sort | Mirabedini, Azadeh |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T06:53:34Z |
| format | Journal Article |
| id | ntu-10356/101146 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:53:34Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/1011462020-03-07T13:19:19Z Fabrication of Coaxial Wet-Spun Graphene-Chitosan Biofibers Mirabedini, Azadeh Foroughi, Javad Thompson, Brianna Wallace, Gordon G. School of Mechanical and Aerospace 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. 2015-09-15T07:03:33Z 2019-12-06T20:34:01Z 2015-09-15T07:03:33Z 2019-12-06T20:34:01Z 2015 2015 Journal Article Mirabedini, A., Foroughi, J., Thompson, B., & Wallace, G. G. (2015). Fabrication of Coaxial Wet-Spun Graphene-Chitosan Biofibers. Advanced Engineering Materials, 18(2), 284-293. 1438-1656 https://hdl.handle.net/10356/101146 http://hdl.handle.net/10220/38695 10.1002/adem.201500201 en Advanced Engineering Materials © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| spellingShingle | Mirabedini, Azadeh Foroughi, Javad Thompson, Brianna Wallace, Gordon G. Fabrication of Coaxial Wet-Spun Graphene-Chitosan Biofibers |
| title | Fabrication of Coaxial Wet-Spun Graphene-Chitosan Biofibers |
| title_full | Fabrication of Coaxial Wet-Spun Graphene-Chitosan Biofibers |
| title_fullStr | Fabrication of Coaxial Wet-Spun Graphene-Chitosan Biofibers |
| title_full_unstemmed | Fabrication of Coaxial Wet-Spun Graphene-Chitosan Biofibers |
| title_short | Fabrication of Coaxial Wet-Spun Graphene-Chitosan Biofibers |
| title_sort | fabrication of coaxial wet spun graphene chitosan biofibers |
| url | https://hdl.handle.net/10356/101146 http://hdl.handle.net/10220/38695 |
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