Accession Number:
ADA169038
Title:
Ionic Conductivity in Solid, Crosslinked Dimethylsiloxane-Ethylene Oxide Copolymer Networks Containing Sodium.
Descriptive Note:
Interim rept.,
Corporate Author:
NAVAL ACADEMY ANNAPOLIS MD DEPT OF PHYSICS
Personal Author(s):
Report Date:
1986-06-01
Pagination or Media Count:
30.0
Abstract:
The preparation of an ion-conducting elastomeric solid based on a dimethylsiloxane-ethylene oxide copolymer complexed with a sodium salt is described. 23Na Nuclear Magnetic Resonance measurements reveal the presence of both bound and mobile sodium species throughout the temperature range -120 to 100 C. Electrical conductivity measurement over a similar temperature range are found to be consistent with the configurational entropy model for transport, with a T sub o parameter about 50 C below the central glass transition temperature T sub g. Keywords Solid electrolytes Polymer electrolytes Electrical relaxation.
Descriptors:
- *ELASTOMERS
- *COPOLYMERS
- *ELECTRICAL CONDUCTIVITY
- *SOLID ELECTROLYTES
- TEMPERATURE
- NUCLEAR MAGNETIC RESONANCE
- MODELS
- METHYL RADICALS
- PARAMETERS
- POLYMERS
- SODIUM
- GLASS
- ELECTRICAL PROPERTIES
- SILOXANES
- CROSSLINKING(CHEMISTRY)
- TRANSITION TEMPERATURE
- MOBILE
- RELAXATION
- ELECTROLYTES
- SALTS
- RANGE(EXTREMES)
- ELECTRICAL MEASUREMENT
- ENTROPY
- ETHYLENE OXIDE
Subject Categories:
- Physical Chemistry
- Elastomers and Rubber