Expanded graphene oxide fibers with high strength and increased elongation
| Autor: | Sudong Chae, Ji-Beom Yoo, Linlin Chi, Min Kyu Kim, Jae-Young Choi, Ashok D. Ugale |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Aqueous solution Hydrogen bond Graphene General Chemical Engineering Oxide 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law Fiber Graphite Composite material Elongation 0210 nano-technology Spinning |
| Zdroj: | RSC advances. 9(8) |
| ISSN: | 2046-2069 |
| Popis: | We report the role of chemically expanded graphite in the fabrication of high-performance graphene oxide fibers by wet spinning. X-ray diffraction peak showed that the interplanar distance of the expanded graphene oxide (EGO) fiber was more than that of graphene oxide (GO) fiber due to the expanded graphite. X-ray photon spectroscopy analysis revealed that EGO was more oxidized than GO. The hydrogen bonding network and secondary intermolecular interaction made the EGO aqueous solution more stable and crystalline, and it was able to be stretched in the coagulation bath. Morphological analysis showed the excellent alignment and compactness of EGO sheets in the fibers. The increased interplanar distance between the EGO sheets favored the edge-to-edge interaction more than the basal plane interaction within the fiber, thus resulting in high mechanical strength (492 MPa) and increased elongation (6.1%). |
| Databáze: | OpenAIRE |
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