RUBBER PARTICLE SIZE DEPENDENCE OF CRAZING IN POLYPROPYLENE.

B. Z. Jang, Donald R Uhlmann, J. B. Vander Sande

Research output: Contribution to journalArticle

121 Citations (Scopus)

Abstract

The tensile crazing and Charpy impact behavior of polypropylene modified with styrene-butadiene copolymer (SBR) and ethylene-propylene-diene monomer (EPDM) was studied. Various rubber particle size distributions were obtained by varying the relative viscosities between rubbery phase and PP matrix. Transmission electron microscopy and computer-aided image analysis were used to provide particle size information. In general, PP blends with smaller rubber particles are tougher and more ductile than those with larger particles, probably because the former represents a more efficient use of rubbery phase in promoting crazing and/or shear yielding. Small particles, inducing smaller stress-enhanced zones, are therefore not effective in initiating crazes.

Original languageEnglish (US)
Pages (from-to)643-651
Number of pages9
JournalPolymer Engineering and Science
Volume25
Issue number10
StatePublished - Jul 1985
Externally publishedYes

Fingerprint

Crazing
Polypropylenes
Rubber
Particle size
Styrene
Butadiene
Particle size analysis
Image analysis
Propylene
Ethylene
Copolymers
Monomers
Viscosity
Transmission electron microscopy
1,3-butadiene
ethylene-propylene-diene-monomer

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Chemistry
  • Polymers and Plastics

Cite this

RUBBER PARTICLE SIZE DEPENDENCE OF CRAZING IN POLYPROPYLENE. / Jang, B. Z.; Uhlmann, Donald R; Vander Sande, J. B.

In: Polymer Engineering and Science, Vol. 25, No. 10, 07.1985, p. 643-651.

Research output: Contribution to journalArticle

Jang, B. Z. ; Uhlmann, Donald R ; Vander Sande, J. B. / RUBBER PARTICLE SIZE DEPENDENCE OF CRAZING IN POLYPROPYLENE. In: Polymer Engineering and Science. 1985 ; Vol. 25, No. 10. pp. 643-651.
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