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Publication - Dr Jeroen Van Duijneveldt

    Adsorption of sodium dodecylsulfate on single-walled carbon nanotubes characterised using small-angle neutron scattering

    Citation

    Kastrisianaki-Guyton, E, Chen, L, Rogers, S, Cosgrove, T & Van Duijneveldt, J, 2016, ‘Adsorption of sodium dodecylsulfate on single-walled carbon nanotubes characterised using small-angle neutron scattering’. Journal of Colloid and Interface Science, vol 472., pp. 1-7

    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.

    Full details in the University publications repository