Shear-SANS study of single-walled carbon nanotube suspensions
Document Type
Article
Publication Date
11-29-2005
Department
Department of Materials Science and Engineering
Abstract
We report a combined shear small-angle neutron scattering (shear-SANS) and rheo-optical study of dilute aqueous suspensions of SWNT bundles dispersed using ionic surfactants. Both shear-SANS and flow birefringence reveal weak shear-induced alignment of SWNT bundles along the direction of flow. In terms of a nematic order parameter, the degree of alignment is found to increase with the shear rate, reaching ca. 0.08 at 2000 s-1. Addition of a soluble polymer to the SWNT suspensions diminishes shear-induced alignment. The factors limiting shear alignment in dilute SWNT suspensions are discussed.
Publication Title
Chemical Physics Letters
Recommended Citation
Wang, H.,
Christopherson, G.,
Xu, Z.,
Porcar, L.,
Ho, D.,
Fry, D.,
&
Hobbie, E.
(2005).
Shear-SANS study of single-walled carbon nanotube suspensions.
Chemical Physics Letters,
416(1-3), 182-186.
http://doi.org/10.1016/j.cplett.2005.09.044
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/6256
