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Individual dispersion of carbon nanotubes in epoxy via a novel dispersion-curing approach using ionic liquids

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journal contribution
posted on 2013-01-01, 00:00 authored by Nishar Hameed, Nisa Salim, T Hanley, M Sona, Bronwyn Fox, Qipeng Guo
The effective dispersion of carbon nanotubes (CNTs) in a thermoset was achieved using ionic liquid as the dispersion-curing agent. We preferentially dispersed multiwalled carbon nanotubes (MWCNTs) down to individual tube levels in epoxy resin. Here the dispersion is ruled by the depletion of physical bundles within the MWCNT networks, for which molecular ordering of ionic liquids is considered responsible. The quantitative analyses using ultra small angle X-ray scattering (USAXS) confirmed the dispersion of individual MWCNTs in the matrix. The distance between the dispersed nanotubes was calculated at different nanotube loadings using the power law fitting of the USAXS data. The fine dispersion and subsequent curing, both controlled by ionic liquid, lead to composites with substantially enhanced fracture mechanical and thermomechanical properties with no reduction in thermal properties. Merging processing techniques of nanocomposites with ionic liquid for efficient dispersion of nanotubes and preferential curing of thermosets facilitates the development of new, high performance materials.

History

Journal

Physical chemistry chemical physics

Volume

15

Pagination

11696 - 11703

Location

Cambridge, England

Open access

  • Yes

ISSN

1463-9076

eISSN

1463-9084

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

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