Accession Number:

ADA393450

Title:

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

Descriptive Note:

Technical rept. 1 Jun 2000-31 May 2001

Corporate Author:

NAVAL ACADEMY ANNAPOLIS MD DEPT OF PHYSICS

Report Date:

2001-07-01

Pagination or Media Count:

18.0

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 polyethylene glycol PEG and polypropylene glycol PPG containing LiCF3SO3. Those for dielectric relaxation are compared with experimental results for polypropylene oxide PPO and polyvinyl acetate. The theoretical viscosity law is compared to experiments on propylene carbonate PC.

Subject Categories:

  • Operations Research
  • Electricity and Magnetism
  • Fluid Mechanics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE