Theoretical and experimental investigation of the wet-spinning process for mechanically strong carbon nanotube fibers
| Autor: | Minji Park, Heon Lee, Gyeong Min Choi, Hyeon Dam Jeong, Seo Gyun Kim, Bon-Cheol Ku |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Plane (geometry) General Chemical Engineering Resonance 02 engineering and technology General Chemistry Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law Orientation (geometry) Environmental Chemistry Superacid A fibers Composite material 0210 nano-technology Spinning Electrical conductor |
| Zdroj: | Chemical Engineering Journal. 412:128650 |
| ISSN: | 1385-8947 |
| Popis: | The orientation factor is significantly important for producing highly strong conductive carbon nanotube (CNT) fibers. Highly oriented CNT fibers can be obtained by the wet-spinning of CNTs in a superacid. We present a theoretical model for obtaining well-aligned CNT fibers, which may have superior properties. Our model predicts the minimum draw ratio ( D R 0 ) at various Deborah numbers ( De ) for CNT fibers with the target orientation. In addition, the stable operation window in the De - D R plane is predicted using linear stability analysis of the draw resonance. Our analysis suggests that a fiber with the target orientation factor can be obtained if and only if the draw ratio, D R , is higher than D R 0 and is within a stable operation window. The model predictions for the stability window and the effect of D R on the properties of the fibers were confirmed by experiment. |
| Databáze: | OpenAIRE |
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