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|Title:||X-ray photoelectron spectroscopy studies on poly-(ethylene oxide) with sodium triflate|
|Citation:||Martin-Vosshage, D.,Chowdari, B.V.R. (1993-12). X-ray photoelectron spectroscopy studies on poly-(ethylene oxide) with sodium triflate. Journal of the Electrochemical Society 140 (12) : 3531-3536. ScholarBank@NUS Repository.|
|Abstract:||Poly(ethylene oxide) films with different concentrations of sodium triflate were prepared by the usual solvent casting process in anhydrous conditions. Structural characteristics for each salt concentration were identified using x-ray photoelectron spectroscopy (XPS) for the first time. Further, thermal and x-ray diffraction techniques were used to characterize the crystalline and amorphous phases and to correlate these data with the results obtained with x-ray photoelectron spectroscopy. The interaction between poly(ethylene oxide) (PEO) and sodium triflate in the concentration range of n = 128, 64, 32,16, 8, and 4 in the general formula (PEO)n-NaCF3SO3 is described. The XPS-studies reveal a characteristic interaction of the -C-C-O- chain of PEO with the cations of NaCF3SO3 for each salt concentrations. The interaction results in a rearrangement of the -C-C-O- chain which is strongest in PEO16NaCF3SO3.|
|Source Title:||Journal of the Electrochemical Society|
|Appears in Collections:||Staff Publications|
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