Application of composite models to isotactic polypropylene for the determination of phase specific stress-strain curves

Florian Spieckermann, Harald Wilhelm, Erhard Schafler, Saïd Ahzi, Michael J. Zehetbauer

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Abstract

Semicrystalline isotactic polypropylene has been uniaxially compressed up to different strains, and the relaxation after unloading has been studied. Two simple rheological models were used to find out the phase specific stress-strain behaviour. Both of them satisfactorily fit the experimental stress-strain characteristics although the stress controlled approach yields a better agreement.
Original languageEnglish
Pages (from-to)76-78
Number of pages3
JournalMaterials science and engineering: A, Structural materials: properties, microstructure and processing
Volume483-484.2008
Issue number15 June
DOIs
Publication statusPublished - 13 May 2007
Externally publishedYes

Keywords

  • Composite models
  • Mechanical properties
  • Polypropylene

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