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Characterization of polyamide 6/carbon nanotube composites prepared by melt mixing-effect of matrix molecular weight and structure |
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| Affiliation: | 1. Department of Chemical and Petroleum Engineering, Sharif University of Technology, P.O. Box 11155-9465, Tehran, Iran;2. Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran;1. Queen Mary University of London, School of Engineering and Materials Science, and Materials Research Institute, Mile End Road, E1 4NS London, UK;2. Nanoforce Technology Ltd., Joseph Priestley Building, Queen Mary University of London, Mile End Road, E1 4NS London, UK;1. Institute of Material Engineering, Polymer Engineering, University of Kassel, Mönchebergstrasse-3, 34125 Kassel, Germany;2. Institute of Materials Science and Engineering, West Pomeranian University of Technology, 19 Piastow Ave, 70310 Szczecin, Poland |
| Abstract: | Effects of molecular weight and structure of polyamide 6 (PA6) on morphology and properties of PA6/MWCNT prepared by melt mixing were investigated. Microscopic analysis showed fine dispersion of MWCNT within low viscosity PA6s due to domination of melt infiltration into MWCNT agglomerate at low viscosity matrices with linear structure. Rheological data indicated good interfacial interaction with no percolation of MWCNT up to 2 wt% loading. DSC thermograms showed nucleating role of MWCNT on crystallization of PA6s with marginal effect on crystallinity. Experimental data supported with micromechanical model showed limited improvement on mechanical properties, but it was closely consistent with degree of dispersion of MWCNT. |
| Keywords: | A Nano-structures B Microstructures B Mechanical properties B Rheological properties |
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