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

Dixon, D and Dooher, T (2011) Multiwalled Carbon Nanotube/PolysulfoneComposites: Using the Hildebrand SolubilityParameter to Predict Dispersion. Polymer Composites, 32 (11). pp. 1895-1903. [Journal article]

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URL: http://onlinelibrary.wiley.com/doi/10.1002/pc.21222/full

DOI: 10.1002/pc.21222


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.

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:22767
Deposited By: Dr Dorian Dixon
Deposited On:09 Jul 2012 15:22
Last Modified:09 Jul 2012 15:22

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