Structural properties of graphene oxide fibers: from graphene oxide dispersion until continuous graphene oxide fiber
| Autor: | Mervin Olmez, Osman Eksik, Burçak Karagüzel Kayaoğlu, Aysen Onen, Nuray Ucar, Nilgün Karatepe Yavuz |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Polymers and Plastics Materials Science (miscellaneous) Oxide 02 engineering and technology Surface finish 010402 general chemistry 01 natural sciences Industrial and Manufacturing Engineering law.invention chemistry.chemical_compound Crystallinity law Photovoltaics Dispersion (optics) Fiber Composite material Graphene business.industry 021001 nanoscience & nanotechnology Exfoliation joint 0104 chemical sciences chemistry 0210 nano-technology General Agricultural and Biological Sciences business |
| Zdroj: | The Journal of The Textile Institute. 109:1642-1652 |
| ISSN: | 1754-2340 0040-5000 |
| Popis: | Continuous graphene oxide fiber focused for the last seven years have a very large application area such as electronic textiles, photovoltaics, batteries, fuel cells, sensors, filters. This study reports the effect of processing parameters such as time, temperature of the exfoliation together with dispersion preparation methods of graphene oxide on the properties of continuous graphene oxide fibers produced by coagulation bath. Relationship between changing parameters and structural properties of graphene oxide fiber,fiber morphology, roughness, crystalline structure have been discussed. It has been shown that crystalline structures and responses to changing parameters are different when it is an exfoliated state, dispersion state, and fiber state. For example, crystalline sizes and number of layers of GO fiber were higher than those of GO dispersion, while the crystallinity degrees and d-spaces at the GO fiber were always less than that of GO dispersion. Higher exfoliation time leads to an increase of Tex count of fiber, while longer ultrasonic time resulted in lower value compared to both shorter ultrasound time and mechanical homogenization. Shorter ultrasonic treatment and shorter exfoliation time leads to higher electrical conductivity compared to mechanical homogenization. Shorter ultrasonic treatment results in vaguely tendency of an increase of breaking strength. |
| Databáze: | OpenAIRE |
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