Multiwalled Carbon Nanotube/PolysulfoneComposites: Using the Hildebrand SolubilityParameter to Predict Dispersion

D Dixon, T Dooher

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Polysulfone composites were prepared by solutioncasting, using various types of treated carbon nanotubes(CNTs) at loadings of up to 5 wt%. The CNTtypes tested were: as-received, acid treated, OCA surfactant,OCA functionalized and Poly(methyl methacrylate)functionalized nanotubes prepared using both asreceivedand acid treated CNT. The treatment typesinvestigated were selected based upon their solubilityparameters and on the results of previous studies.The treated CNTs, CNT/solvent dispersions and thefinal composite samples were characterised using FourierTransform Infrared Spectroscopy (FTIR), thermalanalysis, Transmission Electron Microscopy (TEM),Ultraviolet-Visible (UV-vis) spectroscopy, optical microscopy,electrical conductivity and tensile testing. Itwas observed that the all the treatments studiedimproved the stability of CNT in the solvent. Of theCNT types studied, composites containing OCA functionalisedCNT displayed the lowest percolation threshold(3 wt%) and highest mechanical performance.While the use of Hildebrand solubility parameters isuseful in indentifying promising CNT treatments, theiruse can not fully predict CNT dispersion behaviour andcomposite performance. It is also critical to considerthe influence of any treatments on CNT length and residualsolvent levels.
LanguageEnglish
Pages1895-1903
JournalPolymer Composites
Volume32
Issue number11
DOIs
Publication statusPublished - 1 Nov 2011

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Carbon Nanotubes
Multiwalled carbon nanotubes (MWCN)
Carbon nanotubes
Composite materials
Acids
Polysulfones
Ultraviolet visible spectroscopy
Tensile testing
Polymethyl Methacrylate
Polymethyl methacrylates
Dispersions
Surface-Active Agents
Nanotubes
Optical microscopy
Infrared spectroscopy
Surface active agents
Solubility
Transmission electron microscopy

Cite this

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title = "Multiwalled Carbon Nanotube/PolysulfoneComposites: Using the Hildebrand SolubilityParameter to Predict Dispersion",
abstract = "Polysulfone composites were prepared by solutioncasting, using various types of treated carbon nanotubes(CNTs) at loadings of up to 5 wt{\%}. The CNTtypes tested were: as-received, acid treated, OCA surfactant,OCA functionalized and Poly(methyl methacrylate)functionalized nanotubes prepared using both asreceivedand acid treated CNT. The treatment typesinvestigated were selected based upon their solubilityparameters and on the results of previous studies.The treated CNTs, CNT/solvent dispersions and thefinal composite samples were characterised using FourierTransform Infrared Spectroscopy (FTIR), thermalanalysis, Transmission Electron Microscopy (TEM),Ultraviolet-Visible (UV-vis) spectroscopy, optical microscopy,electrical conductivity and tensile testing. Itwas observed that the all the treatments studiedimproved the stability of CNT in the solvent. Of theCNT types studied, composites containing OCA functionalisedCNT displayed the lowest percolation threshold(3 wt{\%}) and highest mechanical performance.While the use of Hildebrand solubility parameters isuseful in indentifying promising CNT treatments, theiruse can not fully predict CNT dispersion behaviour andcomposite performance. It is also critical to considerthe influence of any treatments on CNT length and residualsolvent levels.",
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Multiwalled Carbon Nanotube/PolysulfoneComposites: Using the Hildebrand SolubilityParameter to Predict Dispersion. / Dixon, D; Dooher, T.

In: Polymer Composites, Vol. 32, No. 11, 01.11.2011, p. 1895-1903.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Dooher, T

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AB - Polysulfone composites were prepared by solutioncasting, using various types of treated carbon nanotubes(CNTs) at loadings of up to 5 wt%. The CNTtypes tested were: as-received, acid treated, OCA surfactant,OCA functionalized and Poly(methyl methacrylate)functionalized nanotubes prepared using both asreceivedand acid treated CNT. The treatment typesinvestigated were selected based upon their solubilityparameters and on the results of previous studies.The treated CNTs, CNT/solvent dispersions and thefinal composite samples were characterised using FourierTransform Infrared Spectroscopy (FTIR), thermalanalysis, Transmission Electron Microscopy (TEM),Ultraviolet-Visible (UV-vis) spectroscopy, optical microscopy,electrical conductivity and tensile testing. Itwas observed that the all the treatments studiedimproved the stability of CNT in the solvent. Of theCNT types studied, composites containing OCA functionalisedCNT displayed the lowest percolation threshold(3 wt%) and highest mechanical performance.While the use of Hildebrand solubility parameters isuseful in indentifying promising CNT treatments, theiruse can not fully predict CNT dispersion behaviour andcomposite performance. It is also critical to considerthe influence of any treatments on CNT length and residualsolvent levels.

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