Investigation of a postprocessing method to tailor the mechanical properties of carbon nanotube/polyamide fibers
| Autor: | David Trudel-Boucher, Pascal Hubert, Genevieve Palardy |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Thermoplastic fibers
Multiwalled carbon nanotubes (MWCN) Nanostructured polymers Materials science Thermoplastic Polymers and Plastics Electric properties Polymers X ray diffraction Mechanical properties Polyamides Carbon nanotube Melt-compounding law.invention law Materials Chemistry Composite material Elastic modulus Capillary rheometer chemistry.chemical_classification Extrusion Chains Spinning (fibers) General Chemistry Polymer Thermal and electrical properties Carbon Surfaces Coatings and Films Multi-walled nanotubes Fibers chemistry Compounding Polyamide Twin screw extrusion Elongation Postprocessing methods |
| Zdroj: | Journal of Applied Polymer Science. |
| ISSN: | 0021-8995 |
| DOI: | 10.1002/app.39713 |
| Popis: | The incorporation of carbon nanotubes to thermoplastic fibers can potentially improve mechanical, thermal and electrical properties. In this article, a methodology to tailor the mechanical properties of carbon nanotube/nylon fibers is presented. Multiwalled nanotubes (MWNT) were combined to polyamide 12 through melt compounding and twin-screw extrusion. Pellets containing between 0 and 5.0 wt % MWNT were extruded and subsequently melt spun with a capillary rheometer to produce filaments. To further promote the alignment of the polymer chains and MWNTs, postdrawing parameters were systematically investigated: temperature, drawing speed and elongation. The best improvements in terms of elastic modulus and yield strength were measured at 140°C and 500% elongation, whereas drawing speed was shown to have a negligible effect. It was confirmed through electron microscopy and X-ray diffraction that these enhancements were mainly induced by the alignment of the polymer chains along the fibers' axis. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 4375–4382, 2013 |
| Databáze: | OpenAIRE |
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