Accession Number : ADA190636

Title :   High Pressure Conductivity and NMR (Nuclear Magnetic Resonance) Investigation of Siloxane-Based Polymer Electrolytes.

Descriptive Note : Interim Technical rept.,

Corporate Author : HUNTER COLL NEW YORK DEPT OF PHYSICS AND ASTRONOMY

Personal Author(s) : Greenbaum, S G ; Pak, Y S ; Adamic, K J ; Wintersgill, M C ; Fountanella, J J

PDF Url : ADA190636

Report Date : 22 Dec 1987

Pagination or Media Count : 20

Abstract : Variable temperature pressure conductivity and 23 Na nuclear magnetic resonance (NMR) measurements of several siloxane based polymers complexed with NaCF3SO3 are reported. The conductivity exhibits V.T.F. behavior of the type commonly observed in amorphous polymer electrolytes, and activation volumes (29.9 cc/mol at 313K for one sample) typical of these materials. The NMR linewidths associated with mobile Na+ ions exhibit motional narrowing above Tg in a manner similar to other Na-polymer electrolytes. The pressure dependence of the 23 Na linewidth is consistent with a 10-15K/kbar increase in Tg. Keywords: Conductivity, High pressure, Polymer electrolytes, Siloxanes.

Descriptors :   *AMORPHOUS MATERIALS, *ELECTROLYTES, *POLYMERS, *SILOXANES, BEHAVIOR, CONDUCTIVITY, HIGH PRESSURE, HIGH RATE, IONS, NUCLEAR MAGNETIC RESONANCE, PRESSURE, TEMPERATURE, VARIABLES

Subject Categories : Organic Chemistry
      Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE