Small angle neutron scattering from single-wall carbon nanotube suspensions: Evidence for isolated rigid rods and rod networks
Document Type
Article
Publication Date
1-19-2004
Department
Department of Materials Science and Engineering
Abstract
We report small angle neutron scattering (SANS) from dilute suspensions of purified individual single wall carbon nanotubes (SWNTs) in D2O with added sodium dodecylbenzene sulfonate ionic surfactant. The scattered intensity scales as Q-1 for scattered wave vector, Q, in the range 0.005 < Q < 0.02 Å-1. The Q-1 behavior is characteristic of isolated rigid rods. A crossover of the scattered intensity power law dependence from Q-1 to Q-2 is observed at ∼0.004 Å-1, suggesting the SWNTs form a loose network at 0.1 wt% with a mesh size of ∼160 nm. SANS profiles from several other dispersions of SWNTs do not exhibit isolated rigid rod behavior; evidently the SWNTs in these systems are not isolated and form aggregates.
Publication Title
Chemical Physics Letters
Recommended Citation
Zhou, W.,
Islam, M.,
Wang, H.,
Ho, D.,
Yodh, A.,
Winey, K.,
&
Fischer, J.
(2004).
Small angle neutron scattering from single-wall carbon nanotube suspensions: Evidence for isolated rigid rods and rod networks.
Chemical Physics Letters,
384(1-3), 185-189.
http://doi.org/10.1016/j.cplett.2003.11.106
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/6254