Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamide

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...

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Autores: Avilés González, María Dolores, Pamies Porras, Ramón Francisco, Arias Pardilla, Joaquín, Carrión Vilches, Francisco José, Bermúdez Olivares, María Dolores, Sanes Molina, José
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Universidad Politécnica de Cartagena(UPCT)
Repositorio:Repositorio Digital UPCT
OAI Identifier:oai:repositorio.upct.es:10317/7559
Acceso en línea:http://hdl.handle.net/10317/7559
Access Level:acceso abierto
Palabra clave:Carbon Nanotubes
ionic liquid
rheology
viscoelasticity
Raman
non-Newtonian fluids.
Ionic liquid
Viscoelasticity
Non-Newtonian fluids
Ciencia de los Materiales e Ingeniería Metalúrgica
3312 Tecnología de Materiales
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spelling Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamideAvilés González, María DoloresPamies Porras, Ramón FranciscoArias Pardilla, JoaquínCarrión Vilches, Francisco JoséBermúdez Olivares, María DoloresSanes Molina, JoséCarbon Nanotubesionic liquidrheologyviscoelasticityRamannon-Newtonian fluids.Carbon NanotubesIonic liquidViscoelasticityRamanNon-Newtonian fluidsCiencia de los Materiales e Ingeniería Metalúrgica3312 Tecnología de MaterialesDispersions 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.The authors acknowledge the Ministerio de Economía, Industria y Competitividad (MINECO, Spain), the EU FEDER Program (Grants # MAT2014-55384-P and # MAT2017-85130-P), and Fundación Séneca - Agencia de Ciencia y Tecnología de la Región de Murcia “Ayuda a las Unidades y Grupos de Excelencia Científica de la Región de Murcia (Programa Séneca 2014)” (Grant # 19877/GERM/14), for financial support. M.D. Avilés acknowledges a research fellowship (Grant # BES-2015-074836) to MINECO.© 2019 Elsevier LtdCiencia de Materiales e Ingeniería Metalúrgica201920192019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/10317/7559reponame:Repositorio Digital UPCTinstname:Universidad Politécnica de Cartagena(UPCT)InglésES/1PE/MAT2014-55384-PES/1PE/MAT2017-85130-Pinfo:eu-repo/semantics/openAccessoai:repositorio.upct.es:10317/75592026-05-15T06:39:02Z
dc.title.none.fl_str_mv Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamide
title Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamide
spellingShingle Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamide
Avilés González, María Dolores
Carbon Nanotubes
ionic liquid
rheology
viscoelasticity
Raman
non-Newtonian fluids.
Carbon Nanotubes
Ionic liquid
Viscoelasticity
Raman
Non-Newtonian fluids
Ciencia de los Materiales e Ingeniería Metalúrgica
3312 Tecnología de Materiales
title_short Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamide
title_full Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamide
title_fullStr Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamide
title_full_unstemmed Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamide
title_sort Rheological study of new dispersions of Carbon Nanotubes in the ionic liquid 1-ethyl-3-methylimidazolium dicyanamide
dc.creator.none.fl_str_mv Avilés González, María Dolores
Pamies Porras, Ramón Francisco
Arias Pardilla, Joaquín
Carrión Vilches, Francisco José
Bermúdez Olivares, María Dolores
Sanes Molina, José
author Avilés González, María Dolores
author_facet Avilés González, María Dolores
Pamies Porras, Ramón Francisco
Arias Pardilla, Joaquín
Carrión Vilches, Francisco José
Bermúdez Olivares, María Dolores
Sanes Molina, José
author_role author
author2 Pamies Porras, Ramón Francisco
Arias Pardilla, Joaquín
Carrión Vilches, Francisco José
Bermúdez Olivares, María Dolores
Sanes Molina, José
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ciencia de Materiales e Ingeniería Metalúrgica
dc.subject.none.fl_str_mv Carbon Nanotubes
ionic liquid
rheology
viscoelasticity
Raman
non-Newtonian fluids.
Carbon Nanotubes
Ionic liquid
Viscoelasticity
Raman
Non-Newtonian fluids
Ciencia de los Materiales e Ingeniería Metalúrgica
3312 Tecnología de Materiales
topic Carbon Nanotubes
ionic liquid
rheology
viscoelasticity
Raman
non-Newtonian fluids.
Carbon Nanotubes
Ionic liquid
Viscoelasticity
Raman
Non-Newtonian fluids
Ciencia de los Materiales e Ingeniería Metalúrgica
3312 Tecnología de Materiales
description 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.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10317/7559
url http://hdl.handle.net/10317/7559
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv ES/1PE/MAT2014-55384-P
ES/1PE/MAT2017-85130-P
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv © 2019 Elsevier Ltd
publisher.none.fl_str_mv © 2019 Elsevier Ltd
dc.source.none.fl_str_mv reponame:Repositorio Digital UPCT
instname:Universidad Politécnica de Cartagena(UPCT)
instname_str Universidad Politécnica de Cartagena(UPCT)
reponame_str Repositorio Digital UPCT
collection Repositorio Digital UPCT
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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