Influence of lengths of millimeter-scale single-walled carbon nanotube on electrical and mechanical properties of buckypaper
Open Access
- 27 December 2013
- journal article
- Published by Springer Science and Business Media LLC in Nanoscale Research Letters
- Vol. 8 (1), 546
- https://doi.org/10.1186/1556-276x-8-546
Abstract
The electrical conductivity and mechanical strength of carbon nanotube (CNT) buckypaper comprised of millimeter-scale long single-walled CNT (SWCNT) was markedly improved by the use of longer SWCNTs. A series of buckypapers, fabricated from SWCNT forests of varying heights (350, 700, 1,500 μm), showed that both the electrical conductivity (19 to 45 S/cm) and tensile strength (27 to 52 MPa) doubled. These improvements were due to improved transfer of electron and load through a reduced number of junctions for longer SWCNTs. Interestingly, no effects of forest height on the thermal diffusivity of SWCNT buckypapers were observed. Further, these findings provide evidence that the actual SWCNT length in forests is similar to the height.Keywords
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