Multiple morphology in polypropylene/ethylene-propylene-diene terpolymer blends

B. Pukánszky, F. Tüdös, A. Kalló, G. Bodor

Research output: Article

83 Citations (Scopus)


The morphology of polypropylene/ethylene-propylene-diene terpolymer (PP/EPDM) blends was investigated in the entire composition range by differential scanning calorimetry (d.s.c.), small angle and wide angle X-ray scattering (SAXS, WAXS) and transmission and scanning electron microscopy (TEM, SEM). Only slight changes were observed in the crystalline morphology of PP blends quickly cooled from the melt. On melting and recrystallization at a lower rate, elastomers show β nucleation effect on PP. Above 80 vol% elastomer content crystallization of PP is hindered. Dispersed morphology of the blends shows structural changes as a function of composition: PP is the continuous phase at low and elastomer at high EPDM content; in between a transitional morphology is observed. At high EPDM content, PP is finely dispersed in the statistical copolymer, while it forms large islands in block EPDM.

Original languageEnglish
Pages (from-to)1399-1406
Number of pages8
Issue number8
Publication statusPublished - aug. 1989

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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