Ramly K.Isa M.I.N.Khiar A.S.A.2024-05-292024-05-2920111432891710.1179/143307511X13031890742-s2.0-84055217249https://www.scopus.com/inward/record.uri?eid=2-s2.0-84055217249&doi=10.1179%2f143307511X1303189074&partnerID=40&md5=3b34aac23c186c70e55a432d89d83bf7https://oarep.usim.edu.my/handle/123456789/9654Polymer blending is used to overcome the disadvantage of pure starch film, and in the present study, starch has been blended with poly(ethylene oxide) (PEO). The X-ray diffraction study shows that starch/PEO with a ratio of 7 : 3 exhibits the least amount of crystallinity, and this was chosen in the preparation of polymer electrolyte. Films of starch/PEO blends were then prepared via solution casting technique, and their properties with different amounts of ammonium nitrate NH4NO3were compared. The highest conductivity at room temperature of ?2�81�0� 46�107S cm-21was achieved with the addition of 35 wt-%NH4NO3. Dielectric data were analysed using complex permittivity and complex electrical modulus for the sample with the highest ionic conductivity. The relaxation time ? for these samples was determined, and the plot shows that t decreases with conductivity of the complexes. The presence of peaks in the imaginary plots shows that the starch/ PEO electrolyte system is an ionic conductor. � W. S. Maney & Son Ltd. 2011.en-USConductivityDielectricPEOPolymer blendingStarchAmmonium compoundsBlendingElectric conductivityEthyleneFilm preparationIonic conductivityPolyelectrolytesPolyethylene oxidesPolymer filmsStarchX ray diffractionAmmonium nitrateComplex electrical modulusComplex permittivityCrystallinitiesDielectricDielectric behaviourDielectric dataElectrolyte systemsIonic conductorPolymer blendingPolymer electrolyteRoom temperatureSolution-casting techniqueStarch filmsX-ray diffraction studiesPolymer blendsArticleS82S8515SUPPL. 2