Abstract
In this study, polycarbonate (PC)/multi-walled carbon nanotube (MWCNT) nancomposites have been prepared by pretreating MWCNT solutions with ultrasonication. We demonstrate that the electrical conductivity and rheological properties of PC/MWCNT nanocomposites strongly depend on the mesoscopic shape factor ( l sp/ d), which is represented by the ratio between the static bending persistence length ( l sp) and outer diameter ( d) of the MWCNT. The electrical conductivity of PC/MWCNT nanocomposites increases linearly with increasing ( l sp/ d) 2 and the percolation threshold of PC/MWCNT nanocomposites decreases linearly with increasing ( l sp/ d) 2 of MWCNTs. The storage modulus of PC/MWCNT nanocomposites increases linearly with increasing ( l sp/ d) 2 of MWCNTs at all frequency ranges.
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