Electrical Relaxation in Poly(Ethylene Oxide).
Abstract
Audio frequency complex admittance (DR) has been used to investigate electrical relaxation in poly(ethylene oxide) (PEO). The complex admittance measurements were performed at seventeen frequencies from 10 to 100,000 Hz in approprimately equal logarithmic intervals using a fully automated dielectric spectrometer and measurements were performed in vacuum over the temperature range 5.5-350K. Two relaxations are observed at low temperatures which is consistent with the literature. In order to gain new information concerning the gamma relaxation, measurements were made at -94, -91, and -88 C at pressures up to 0.2 GPa. The shift in the peak frequency with pressure and hence the activation volume are found to be extremely small. This result combined with other work implies that the relaxation is associated with the motion of very small segments of the polymer chain. Originator supplied keywords include: Solid electrolytes, polymer electrolytes, poly(ethylene oxide), electrical relaxation, high pressures, activation volumes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1985
- Accession Number
- ADA157301
Entities
People
- John J. Fontanella
- M. C. Wintergill
Organizations
- United States Naval Academy