Model Filled Polymers 3. Rheological Behavior of Polystyrene Containing Crosslinked Polystyrene Beads

Abstract

The steady shear viscosity and dynamic moduli, at 180 and 200 C, of polystyrene composites, containing crosslinked monodisperse polystyrene beads varying in diameter from 0.2 to 0.8 microns, are independent of bead size and crosslink density, but increase with the volume fraction of beads. Steady shear viscosities exhibit power law regions up to 40% concentration of beads, but no yield stress. Storage and loss moduli are initially linear with frequency, on double logarithmic plots, with limiting slopes of 1.3 and 0.9, respectively. Uncrosslinked beads and beads crosslinked with 0.1% divinylbenzene are destroyed by thermomechanical dispersion in the melt. Keywords: Polystyrene composites; Filled polymers; Crosslinked monodisperse beads; Rheology; Dynamic mechanical analysis. (edc)

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Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1989
Accession Number
ADA215867

Entities

People

  • J. J. Aklonis
  • K. Gandhi
  • Liuyang Sun
  • M. Park
  • R. Salovey

Organizations

  • University of Southern California

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  • Energy and Power Technologies
  • Ground and Sea Platforms

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  • Biomedical And Dental Materials
  • California
  • Chemical Engineering
  • Chemistry
  • Composite Materials
  • Copolymers
  • Dispersions
  • Electron Microscopy
  • Engineering
  • Materials
  • Materials Processing
  • Materials Science
  • Military Research
  • Molecular Weight
  • Rheology
  • Scanning Electron Microscopy
  • United States

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  • Mathematics or Statistics
  • Mechanical Engineering/Mechanics of Materials.
  • Polymer Science and Technology