Arc-grown SWCNTs

Figure 10.6. X-ray diffractograms of pristine (bottom) and PEI-wrapped (top) arc-grown SWCNTs.

Figure 10.8. SEM micrographs from fractured surfaces of different types of PEEK/SWCNT nanocomposites, obtained with an acceleration voltage of 25 kV and an intensity of 9-10-9 A. (A) PEEK/arc-grown SWCNT 0.5 wt% ...

CNT loading. Samples including compatibilizer show conductivity values about one order of magnitude lower than those non-compatibilized, since the wrapping leads to a decrease in the number of contacts between the tubes, hence a reduction in the conductivity. On the other hand, for the same CNT concentration, small differences were found among conductivity data of composites reinforced with laser-grown and arc-grown SWCNTs. 

Among the several known types of carbon fibres the discussion in this chapter is limited to the electric arc grown multi-walled carbon nanotubes (MWCNTs) as well as single-walled ones (SWCNTs). For MWCNT we restrict the discussion to the idealised coaxial cylinder model. For other models and other shapes we refer to the literature [1-6],... 

Figure 10.2. SEM images of as-produced laser-grown (left) and arc-grown (right) SWCNTs.

B) PEEK/arc-purified SWCNT 0.5 wt% (C) PEEK/laser-grown SWCNT 1.0 wt% (D) PEEK/laser-grown SWCNT dispersed in PEI 1.0 wt%. The arrows indicate randomly distributed nanotube bundles throughout the matrix. (A) and... 

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