Optical microscopy and conductivity of poly(ethylene oxide) complexed with KI salt

摘要: Abstract The optical microscopy, crystallinity and ion conductivity of PEO complexed with potassium iodide (KI) salt are present. spherulite structure derived from polarized microscopy (POM) suggested the induces different structures that without salt. size spherulites decreases increasing concentration is completely destroyed KI content 20 wt% (O–K ratio 15:1). This result concurs X-ray diffraction DSC studies, reduced upon addition Upon elevating temperature, POM micrographs elucidate degradation when smaller crystallites begin to melt before melting temperature SPE, become opaque above (Tm). pseudo-activation energy variable measurements about 0.24 eV similar PEO–lithium systems identical segmental motion governs fundamental movement. Stable PEO–K complex (Tm 135 155 °C) formed after annealing at 120 °C for 12 h. However, one order compared lithium due shorter hopping distance heavier ion.