%0 Journal Article %A Avilés, María Dolores %A Pamies Porras, Ramón Francisco %A Arias Pardilla, Joaquín %A Carrión Vilches, Francisco José %A Bermúdez Olivares, María Dolores %A Sanes Molina, José %A Avilés González, María Dolores %T Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamide %D 2019 %@ 0167-7322 %U http://hdl.handle.net/10317/7559 %X Dispersions of three different types of carbon nanotubes in a 1 wt.% proportion in the low viscosity 1-ethyl-3-methylimidazolium ([EMIM][DCA]) ionic liquid have been obtained. The neat ionic liquid presents Newtonian behavior, but the addition of carbon nanotubes increases the viscosity with respect to [EMIM][DCA] in the following order: Single-Walled Carbon Nanotubes (SWCNTs) > aligned Multi-Walled Carbon Nanotubes (aligned-MWCNTs) > Multi-Walled Carbon Nanotubes (MWCNTs), and the resulting fluids show non-Newtonian behavior. SWCNTs and MWCNTs dispersions present shear thinning with increasing shear rate, but a shear thickening effect for aligned-MWCNTs at intermediate shear rate values at room temperature has been observed. This effect disappears at 100 ºC. The thermal response of the viscosity of [EMIM][DCA] and the CNTs-IL dispersions can be fitted to the Arrhenius model. For[EMIM][DCA] and the dispersion with MWCNTs the viscous behavior prevails at low frequencies, with a cross point at a critical frequency value which decreases with increasing temperature. However, the dispersions of SWCNTs and aligned-MWCNTspresent storage modulus values higher than loss modulus in the whole range of frequency. %K Ciencia de los Materiales e Ingeniería Metalúrgica %K Carbon Nanotubes; ionic liquid; rheology; viscoelasticity; Raman; non-Newtonian fluids. %K Carbon Nanotubes %K Ionic liquid %K Viscoelasticity %K Raman %K Non-Newtonian fluids %K 3312 Tecnología de Materiales %~ GOEDOC, SUB GOETTINGEN