Toughness assessment of elastomeric polypropylene (ELPP) by the essential work of the fracture method

D. E. Mouzakis, M. Gahleitner, J. Karger-Kocsis

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The essential work of the fracture (EWF) method was employed to determine the fracture performance of thermoplastic polypropylene (PP) elastomers. Three types of elastomeric polypropylene (ELPP) of homo- and copolymer nature based on different catalysts were involved in this study. Tests were carried out in both I and III fracture modes to check the applicability of the EWF approach for such elastomers. It was found that the trouser tearing test (mode III) overestimates both the specific essential (we) and plastic work (wp) terms when the tearing resistance of the ELPP is higher than the resistance to tensile loading. With decreasing crystallinity (i.e., by decreasing length of the stereoregular chain segments of the block copolymers or increased content of comonomer) we increased, whereas in respect to wp,, an opposite tendency was found. This was interpreted by possible changes in the thermoreversible network structure of the ELPP in which crystalline domains act as network knot points in the amorphous PP matrix.

Original languageEnglish
Pages (from-to)873-881
Number of pages9
JournalJournal of Applied Polymer Science
Volume70
Issue number5
Publication statusPublished - Oct 31 1998

Fingerprint

Polypropylenes
Toughness
Elastomers
Homopolymerization
Thermoplastics
Block copolymers
Copolymers
elastomeric
Plastics
Crystalline materials
Catalysts

Keywords

  • Atactic-isotactic sequence
  • Block copolymer
  • Elastomeric polypropylene (ELPP)
  • Essential work of fracture
  • Fracture mechanics
  • Mode I
  • Mode III
  • Trouser tearing test

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Toughness assessment of elastomeric polypropylene (ELPP) by the essential work of the fracture method. / Mouzakis, D. E.; Gahleitner, M.; Karger-Kocsis, J.

In: Journal of Applied Polymer Science, Vol. 70, No. 5, 31.10.1998, p. 873-881.

Research output: Contribution to journalArticle

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