A New Vogel-Like Law: Ionic Conductivity, Dielectric Relaxation and Viscosity Near the Glass Transition

Abstract

A model, based on defect diffusion, is developed that describes temperature and pressure dependence of dielectric relaxation, ionic conductivity and viscosity of glass-forming liquids near the glass transition temperature. The resultant expressions for ionic conductivity are compared with experimental results for the polymer electrolytes poly(ethylene glycol) (PEG) and poly(propylene glycol) (PPG) containing LiCF3SO3. Those for dielectric relaxation are compared with experimental results for poly(propylene oxide) (PPO) and poly(vinyl acetate). The theoretical viscosity law is compared to experiments on propylene carbonate (PC).

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2001
Accession Number
ADA393450

Entities

People

  • John J. Fontanella
  • John T. Bendler
  • Michael F. Shlesinger

Organizations

  • United States Naval Academy

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Carbonate Esters
  • Carbonates
  • Chemical Synthesis
  • Chemistry
  • Conductivity
  • Critical Temperature
  • Equations
  • Glass Transition Temperature
  • Glycols
  • Materials
  • Phase Transformations
  • Propenes
  • Relaxation Time
  • Transition Temperature
  • Transitions
  • United States Naval Academy
  • Viscosity

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Polymer Science and Engineering.