STUDIES ON THE STRESS RELAXATION OF POLYSTYRENES IN THE RUBBERY-FLOW REGION.

Abstract

Relaxation modulus curves for monodisperse and polydisperse polystyrenes are compared and the significant effect of molecular weight distribution on these curves is shown. An empirical three-parameter equation is shown to describe well the stress relaxation behavior of monodisperse polystyrenes. New data for high molecular weight monodisperse polystyrenes are presented and used to extend the applicability of previous quantitative relations for higher molecular weights. The stress relaxation technique is shown to be sensitive to the type of plasticizer used at low concentrations. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1969
Accession Number
AD0697310

Entities

People

  • Arthur V. Tobolsky
  • I. L. Hopkins
  • M. Narkis

Organizations

  • Princeton University

Tags

DTIC Thesaurus Topics

  • Cooperation
  • Dielectric Polymers
  • Equations
  • Macromolecules
  • Materials
  • Molecular Weight
  • Molecules
  • Plasticizers
  • Plastics
  • Polymers
  • Polystyrenes
  • Resins

Readers

  • Aerosol Science/Aerosol Physics
  • Mechanical Engineering/Mechanics of Materials.
  • Polymer Science and Engineering.