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Bent-shape effects of multi-walled carbon nanotube on the electrical conductivity and rheological properties of polycarbonate/multi-walled carbon nanotube nanocomposites
- Issue Date
- 8월-2011
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Carbon nanotubes; Polymer composites; Percolation threshold; Electrical conductivity; Rheology
- Citation
- SYNTHETIC METALS, v.161, no.15-16, pp.1629 - 1634
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 161
- Number
- 15-16
- Start Page
- 1629
- End Page
- 1634
- ISSN
- 0379-6779
- 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. (C) 2011 Elsevier B.V. All rights reserved.
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