Linear viscoelastic properties of mixtures of 3- and 4-arm polybutadiene stars

Nikolaos Hadjichristidis*, J. Roovers

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

The viscoelastic properties of a three-arm and a four-arm star polybutadiene with the same arm molecular weight (Ma) were studied. The zero-shear recoverable compliance (J0e) and plateau modulus (G0N) for these stars are the same. The zero-shear viscosity (η0) of the three-arm star is 20% lower than that of the four-arm star. Mixtures of the stars had J0e and G0N unchanged. A 50 50 mixture of the three- and four-arm star was diluted with a low molecular weight linear polybutadiene. G0N∝ø2; J0e∝ø-1 and Me∝ø-1, as expected for dilution with a θ-solvent.

Original languageEnglish (US)
Pages (from-to)1087-1090
Number of pages4
JournalPolymer
Volume26
Issue number7
DOIs
StatePublished - Jan 1 1985

Keywords

  • dilution
  • polybutadiene
  • star polymer
  • viscoelasticity
  • viscosity
  • zero-shear compliance

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry

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