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Jiaxi Guo, Yanjun Liu, Ricardo Prada-Silvy, Yongqiang Tan, Samina Azad, Beate Krause, Petra Pötschke and Brian P. Grady Aspect ratio effects of multi-walled carbon nanotubes on electrical, mechanical, and thermal properties of polycarbonate/MWCNT composites Journal of Polymer Science Part B: Polymer Physics 52

Version of Record online: 29 OCT 2013 | DOI: 10.1002/polb.23402

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The aspect ratio of carbon nanotubes (CNTs) plays an important role in the electrical percolation threshold for polymer/CNT composites. Multi-walled CNTs having high aspect ratios were synthesized and melt-mixed with polycarbonate at various mixing speeds and for various times. The results show that higher aspect ratio tubes can lead to lower percolation thresholds and that with these longer tubes, reducing mixing energies can reduce the percolation threshold even more.

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