Abstract
Aqueous dispersions of single-walled carbon nanotubes are often made using sodium dodecylsulfate (SDS), which adsorbs to the nanotube surface to stabilise them. Despite SDS being commonly used with single-walled carbon nanotubes, there is no consensus on the structure of the adsorbed layer. Small-angle neutron and X-ray scattering results reported here show that the data can be fitted to a relatively simple core-shell cylinder model, consistent with a polydisperse nanotube core of radius 10 ˚A, surrounded by an adsorbed surfactant layer of thickness 18 ˚A and volume fraction of 0.5. This is consistent with small nanotube bundles surrounded by an adsorbed layer of extended SDS molecules.
Original language | English |
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Pages (from-to) | 1-7 |
Number of pages | 7 |
Journal | Journal of Colloid and Interface Science |
Volume | 472 |
Early online date | 14 Mar 2016 |
DOIs | |
Publication status | Published - 15 Jun 2016 |
Keywords
- Small-angle neutron scattering
- SANS
- Single-walled carbon nanotubes
- SWCNTs
- Adsorption
- Sodium dodecylsulfate
- SDS
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Adsorption of sodium dodecylsulfate on single-walled carbon nanotubes characterised using small-angle neutron scattering
Duijneveldt, J. V. (Creator) & Kastrisianaki-Guyton, E. (Creator), University of Bristol, 15 Mar 2016
DOI: 10.5523/bris.1blyhopxhqjxc1g3fsmsktqajd, http://data.bris.ac.uk/data/dataset/1blyhopxhqjxc1g3fsmsktqajd
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