Synthesis, NMR Characterization and Electrical Properties of Siloxane- Based Polymer Electrolytes.
Interim Technical rept.,
NORTHWESTERN UNIV EVANSTON IL DEPT OF CHEMISTRY
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A crosslinked siloxane-based polymer has been prepared by the reaction of Polymethylhudrosiloxane, monomethyl ether polyethylene glycol, and polyethylene glycol. The polymer, which has been structurally characterized by 29 Si NMR, forms complexes with LISO CF3 that exhibit good ionic conductivities for a LiSO3CF3 15 wt complex. The polymer and its salt complexes have been characterized by elemental analysis, 29 Si NMR powder diffraction X-ray powder diffraction, DSC, and AC complex impedance spectroscopy. The dependence of the ionic conductivity was investigated as a function of temperature, salt concentration 91 wt to 25 wt , and alkali metal cation Li, Na, K, Rb, and Cs. Keywords Polysiloxane, Polyethylene glycol, Copolymers, Polymer electrolytes, Polymer salt complexes, Ionic conductivity.
- Polymer Chemistry
- Physical Chemistry