Shear-SANS study of single-walled carbon nanotube suspensions
Document Type
Article
Publication Date
11-29-2005
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. © 2005 Elsevier B.V. All rights reserved.
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