Journal of Materials Science

, Volume 30, Issue 13, pp 3300–3306 | Cite as

Novel aspects of the microstructure of PP/PA blends prepared by reactive compounding as studied by microhardness

  • H. G. Fritz
  • Q. Cai
  • M. E. Cagiao
  • L. Giri
  • F. J. Baltá Calleja


The microhardness of injection-moulded i-polypropylene/polyamide (iPP/PA) blends prepared by reactive compounding was determined. The formulation rules and processing technology for the preparation of these alloys was reported previously. iPP/PA compositions between 100/0 and 50/50 using functionalized PP with various degrees of mainchain grafting, were investigated. It is shown that the deviation of microhardness from the additivity law of the single components is mainly due to a decrease in the crystallinity of the iPP phase. The results are discussed in the light of the microstructural variations as revealed by X-ray diffraction methods.


Polymer Microstructure Processing Technology Material Processing Single Component 
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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • H. G. Fritz
    • 1
  • Q. Cai
    • 1
  • M. E. Cagiao
    • 2
  • L. Giri
    • 2
  • F. J. Baltá Calleja
    • 2
  1. 1.Institut für Kunststofftechnologie (IKT)University of StuttgartStuttgartGermany
  2. 2.Instituto de Estructura de la MateriaCSICMadridSpain

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