Journal
POLYMER
Volume 43, Issue 26, Pages 7483-7491Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0032-3861(02)00664-X
Keywords
nanotubes; rheology; processing
Categories
Ask authors/readers for more resources
The rheological behaviour of aqueously dispersed oxidised nanotubes has been studied at concentrations at which the nanotubes interacted with each other. The dispersed nanotubes represented a high aspect ratio system with a ratio of similar to80. Dynamic and steady shear tests were applied to the dispersions using a cone and plate rheometer. The system was found to behave as a reversibly flocculated dispersion. The structure of the dispersions was highly strain-sensitive with the linear viscoelastic region (LVR) extending to strains of 1%. The moduli within the LVR were independent of frequency and scaled with concentration by a power law. Under steady shear the dispersions rapidly shear thinned up to a Peclet number of similar to1 to 10. At higher Peclet numbers the shear thinning behaviour followed the Ostwald-de Waele power law. The dispersions were thixotropic and recovered their structure, and hence viscosity, upon standing. (C) 2002 Elsevier Science Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available