ISSN:
1022-1352
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Novel comb-type polyphosphazene derivatives with cyclic carbonate groups as the terminal function of oligo(oxyethylene) side chains [CEP] were prepared for the achievement of high ionic conductivity, when they were hybridized with LiCIO4, in accordance with increase of permittivity. The relative permittivity of CEP turned out to be extraordinarily high, i.e. 24,6, whereas that of a similar comb-type polyphosphazene with methyl ether terminal function of side chains was less than 10 at 25°C. The [LiCIO4(5)/CEP (95 wt.-%)] hybrid showed relatively high ionic conductivity of 7,3 · 10-6 at 25°C and 9,6 · 10-5 S · cm-1 at 60°C, respectively. From the observation of the temperature dependence of ionic conductivity at 10-60°C, it was revealed that the ionic conduction obeys the Vogel-Tamman-Fulcher and Williams-Landel-Ferry equations based on the free volume theory.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1994.021950604
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