Tunable Single-Walled Carbon Nanotube Microstructure in the Liquid and Solid States Using Poly(acrylic acid)
Authors:
- 30 March 2006
- journal article
- research article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 6 (5) , 911-915
Abstract
Poly(acrylic acid) is shown to control the level of SWNT dispersion in aqueous mixtures and the state of dispersion in a solid composite. At low pH, PAA-stabilized suspensions containing 0.1 wt % SWNT have a waterlike viscosity, but this mixture thickens as the pH is raised. This behavior is reversed when pH is again lowered. Changing pH varies the SWNT microstructure between aggregated and well-exfoliated states, as evidenced by electron microscopy and electrical conductivity measurements.Keywords
This publication has 41 references indexed in Scilit:
- Selective Dispersion of Single-Walled Carbon Nanotubes in the Presence of Polymers: the Role of Molecular and Colloidal Length ScalesJournal of the American Chemical Society, 2004
- Realistic applications of CNTsMaterials Today, 2004
- Dispersing Carbon Nanotubes in Water: A Noncovalent and Nonorganic WayThe Journal of Physical Chemistry B, 2004
- Nanotubes and the Pursuit of ApplicationsMRS Bulletin, 2004
- Purification and Separation of Carbon NanotubesMRS Bulletin, 2004
- Individually Suspended Single-Walled Carbon Nanotubes in Various SurfactantsNano Letters, 2003
- DNA-assisted dispersion and separation of carbon nanotubesNature Materials, 2003
- Tensile Loading of Ropes of Single Wall Carbon Nanotubes and their Mechanical PropertiesPhysical Review Letters, 2000
- Gas-phase catalytic growth of single-walled carbon nanotubes from carbon monoxideChemical Physics Letters, 1999
- Crystalline Ropes of Metallic Carbon NanotubesScience, 1996