Abstract
Differential thermal analysis, optical microscopy and ionic conductivity studies have been carried out on polymer electrolyte films prepared by deposition of solutions of neodymium trifluoromethanesulphonate and poly(ethylene oxide). A wide range of electrolyte concentrations were examined and a partial pseudo-equilibrium phase diagram of the system was determined. From the results obtained it is evident that the presence of relatively high concentrations of ionic guest species in the polymer host results in an inhibition of the growth of crystalline material (polymer spherulites or a polymer—salt coordination complex).
Zusammenfassung
Durch Abscheidung der Lösungen von Neodymtrifluormethansulfonat und Poly (ethylenoxid) wurden Polymer-Elektrolytfilme hergestellt, die als Untersuchungsobjekt für DTA-, Lichtmikroskopie- und Ionenleitfähigkeitsuntersuchungen dienten. Dabei wurde ein breiter Bereich für die Elektrolytkonzentration untersucht und ein partielles Pseudogleichgewichts-Phasendiagramm des Systemes erstellt. Aus den Resultaten ist ersichtlich, daß die Gegen-wart von relativ hohen Konzentrationen von ionischen Gastspezies in den polymeren Wirtspezies zu einer Hemmung des Wachstumes des kristallinen Materiales (polymere Sphärolithe oder ein Polymer—Salz Koordinationskomplex) führt.
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Cruz-Pinto, J.J., Silva, M.M., Smith, M.J. et al. The use of thermal techniques in the determination of the phase diagram of lanthanide salt based polymer electrolytes. Journal of Thermal Analysis 40, 641–647 (1993). https://doi.org/10.1007/BF02546635
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DOI: https://doi.org/10.1007/BF02546635