Nano Archive

On the factors controlling the mechanical properties of nanotube films

Blighe, Fiona M. and Lyons, Philip E. and De, Sukanta and Blau, Werner J. and Coleman, Jonathan N. (2008) On the factors controlling the mechanical properties of nanotube films. CARBON, 46 (1). pp. 41-47.

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We have studied the mechanical and morphological properties of carbon nanotube films prepared from tubes produced by a range of commercial suppliers. We find significant correlations between mechanical parameters (modulus, strength, toughness and ductility) and morphological parameters (porosity and bundle diameter). Both strength and toughness scale linearly with the number of inter-bundle junctions per unit volume as calculated from the porosity and bundle size. Applying a simple model, we can use this data to find the average force and energy required to break a junction to be similar to 113 pN and 0.7 eV, respectively. This latter value agrees well with the value of 0.9 eV estimated from the nanotube surface energy, indicating that adjacent bundles are bound predominately by van der Waals interactions. (c) 2007 Elsevier Ltd. All rights reserved.

Item Type:Article
Subjects:Physical Science > Nanophysics
Engineering > Nanotechnology applications in mechanical engineering
Physical Science > Nano objects
ID Code:2455
Deposited By:Farnush Anwar
Deposited On:23 Dec 2008 15:24
Last Modified:23 Dec 2008 15:24

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