Journal of Materials Science

, Volume 26, Issue 18, pp 4878–4882 | Cite as

Peculiarities of mechanical response of heavily filled polypropylene composites

Part I Elastic modulus
  • J. Jancar
  • J. Kucera
  • P. Vesely


A concentration dependence of a dynamic storage E′c modulus was investigated for polypropylene filled with microfibrous magnesium hydroxide, Mg(OH)2. The non-monotonous shape of E against filler volume fraction dependence was explained as a consequence of the filler agglomeration.

A simple stochastical model for the dependence of an agglomerate size on the filler volume fraction was developed. A qualitative agreement was obtained between experimental data and proposed theory. A critical filler volume fraction, when an “infinite” agglomerate origins, was determined from the model as well as from percolation conception to be around v f crit = 0.2.


Polypropylene Agglomeration Stochastical Model Concentration Dependence Mechanical Response 
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Copyright information

© Chapman & Hall 1991

Authors and Affiliations

  • J. Jancar
    • 1
  • J. Kucera
    • 1
  • P. Vesely
    • 2
  1. 1.Chemopetrol, Research Institute of Macromolecular ChemistryBrnoCzech Republic
  2. 2.State Textile Research InstituteVeverska BityskaCzech Republic

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