Ultrasonic Relaxation Near the Melting Point of Polyethylene and Polyethylene Oxide,

Abstract

Ultrasonic absorption measurements were made on polyethylene and polyethylene oxide at 5.5 MHz from room temperature to above the melting point. Both polymers have a relaxation peak near the melting point. Comparison of this data with literature values suggests that both peaks are due to the alpha relaxation, and that the activation energy for the alpha relaxation in polyethylene oxide is 40 kcal/mole. (Author-PL)

Document Details

Document Type
Technical Report
Publication Date
Oct 26, 1972
Accession Number
AD0754391

Entities

People

  • Bruce Hartmann
  • Jacek Jarzynski

Organizations

  • Naval Ordnance Laboratory

Tags

DTIC Thesaurus Topics

  • Absorption
  • Dielectric Polymers
  • Energy
  • Heat Of Activation
  • Isothermal Processes
  • Literature
  • Measurement
  • Melting
  • Melting Point
  • Phase Transformations
  • Polymers
  • Thermodynamic Processes

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Reinforced Composite Materials