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Carbon Nanotube and Nanofibre Reinforced Polyamide-12 Fibres

  • M. S. P. Shaffer (a1), J. K. W. Sandler (a2), S. Pegel (a2) (a3), A. H. Windle (a2), F. Gojny (a3), K. Schulte (a3), M. Cadek (a4), W. J. Blau (a4), J. Lohmar (a5) and M. van Es (a6)...


A range of multi-wall carbon nanotubes and carbon nanofibres were mixed with a polyamide-12 matrix using a twin-screw microextruder, and the resulting blends used to produce a series of reinforced polymer fibres. The aim was to compare the dispersion and mechanical properties achieved for nanofillers produced by different techniques. A high quality of dispersion was achieved for all the catalytically-grown materials and the greatest improvements in stiffness were observed using aligned, substrate-grown, carbon nanotubes. The use of entangled multi-wall carbon nanotubes led to the most pronounced increase in yield stress. The degrees of polymer and nanofiller alignment and the morphology of the polymer matrix were assessed using X-ray diffraction and calorimetry.



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