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1997•MacromoleculesRequires access

Compound Formation and Ionic Association in the Poly(ethylene oxide)−Potassium Triflate System

Sangamithra Chintapalli, Christine Quinton, Roger E. Frech, Colin A. Vincent

Open publisher page 31 citations

Abstract

Results of a spectroscopic study in the high molecular weight PEO−potassium triflate system indicates the presence of a crystalline compound with a 1:1 stoichiometry, (PEO)KCF 3 SO 3, which has also been confirmed with X-ray diffraction and DSC studies. The presence of the compound leads to a decrease in ionic conductivity at very high salt concentrations. Ionic association of potassium triflate in glymes and glycols as a function of salt concentration was also studied using infrared spectroscopy, with particular attention to the effect of chain length and end group on the ionic association.

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Results of a spectroscopic study in the high molecular weight PEO−potassium triflate system indicates the presence of a crystalline compound with a 1:1 stoichiometry, (PEO)KCF 3 SO 3, which has also been confirmed with X-ray diffraction and DSC studies. The presence of the compound leads to a decrease in ionic conductivity at very high salt concentrations. Ionic association of potassium triflate in glymes and glycols as a function of salt concentration was also studied using infrared spectroscopy, with particular attention to the effect of chain length and end group on the ionic association.

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Available abstract

Results of a spectroscopic study in the high molecular weight PEO−potassium triflate system indicates the presence of a crystalline compound with a 1:1 stoichiometry, (PEO)KCF 3 SO 3, which has also been confirmed with X-ray diffraction and DSC studies. The presence of the compound leads to a decrease in ionic conductivity at very high salt concentrations. Ionic association of potassium triflate in glymes and glycols as a function of salt concentration was also studied using infrared spectroscopy, with particular attention to the effect of chain length and end group on the ionic association.

Key concepts: Trifluoromethanesulfonate, Ethylene oxide, Chemistry, Ionic bonding, Salt (chemistry), Ionic conductivity, Potassium, Stoichiometry

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