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 (lsp/d), which is represented by the ratio between the static bending persistence length (lsp) and outer diameter (d) of the MWCNT. The electrical conductivity of PC/MWCNT nanocomposites increases linearly with increasing (lsp/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 (lsp/d)2 of MWCNTs at all frequency ranges.
Original language | English |
---|---|
Pages (from-to) | 1629-1634 |
Number of pages | 6 |
Journal | Synthetic Metals |
Volume | 161 |
Issue number | 15-16 |
DOIs | |
Publication status | Published - 2011 Aug |
Bibliographical note
Funding Information:This research was partly supported by a grant (code BB3-101 ) from Carbon Dioxide Reduction & Sequestration Research Center, one of the 21st Century Frontier Programs funded by the Ministry of Education, Science and Technology of Korean government . This work was partly supported by the grant from the Industrial technology development program of the Ministry of Knowledge Economy (MKE) of Korea . The author (M.S. Han) was supported by the Korea University Grant .
Keywords
- Carbon nanotubes
- Electrical conductivity
- Percolation threshold
- Polymer composites
- Rheology
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry