Journal of Materials Science

, Volume 12, Issue 12, pp 2427–2434 | Cite as

Enhanced fracture strain of polypropylene by incorporation of thermoplastic fibres

  • D. Campbell
  • M. M. Qayyum


The incorporation of continuous, uniaxial oriented, nylon and polyethylene terephthalate fibres into isotactic polypropylene leads to the expected increase in tensile strength as predicted by the rule of mixtures. The elongation to break, however, is found to be significantly in excess of those of the fibres and the matrix and increases with fibre volume fraction. The increase in ductility of the composites is attributed to decrease in spherulite size of the polypropylene and to restrained necking of the fibres due to transcrystalline growth at the fibre surface.


Polymer Tensile Strength Polyethylene Ductility Nylon 
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Copyright information

© Chapman and Hall Ltd. 1977

Authors and Affiliations

  • D. Campbell
    • 1
  • M. M. Qayyum
    • 1
  1. 1.Department of Materials ScienceNewcastle-upon-Tyne PolytechnicNewcastle-upon-TyneUK

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