Development of Sizing-free Multi-Functional Carbon Fibre Nanocomposites

T.R. Pozegic, K.D.G.I. Jayawardena, J-S. Chen, J.V. Anguita, P. Ballocchi, V. Stolojan, S.R.P. Silva, I. Hamerton

Research output: Contribution to journalArticle (Academic Journal)peer-review

22 Citations (Scopus)
505 Downloads (Pure)


High quality multi-walled carbon nanotubes (CNTs) grown at high density using a low temperature growth method are used as an alternative material to polymer sizing and is utilised in a series of epoxy composites reinforced with carbon fibres to provide improved physical and electrical properties. We report improvements for sizing-sensitive mechanical and physical properties, such as the interfacial adhesion, shear properties and handling of the fibres, whilst retaining resin-infusion capability. Following fibre volume fraction normalisation, the carbon nanotube-modified carbon fibre composite offers improvements of 146 % increase in Young’s modulus; 20% increase in ultimate shear stress; 74 % increase in shear chord modulus and an 83 % improvement in the initial fracture toughness. The addition of CNTs imparts electrical functionalisation to the composite, enhancements in the surface direction are 400%, demonstrating a suitable route to sizing-free composites with enhanced mechanical and electrical functionality.
Original languageEnglish
Pages (from-to)306–319
Number of pages14
JournalComposites Part A: Applied Science and Manufacturing
Early online date18 Jul 2016
Publication statusPublished - 1 Nov 2016


  • A multifunctional composites
  • A nanocomposite
  • A carbon nanotubes and nanofibers
  • Polymer sizing


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