MATERIALE PLASTICE https://revmaterialeplastice.ro https://doi.org/10.37358/Mat.Plast.1964 Mater. Plast., 58 (4), 2021, 37-46 37 https://doi.org/10.37358/MP.21.4.5529 Effect of Potassium Alum Salt Particles on the Activation Energy of Poly(ethylene oxide) Doped with Conductive Carbon Black (CB) Nanoparticles ABEER ADAILEH 1* , MOHAMMED AL-TWEISSI 2 *, HUSAM MIQDAD 1 1 Applied Science Private University, Faculty of Arts and Science, Department of Basic Science, Amman, Jordan 2 Al-Hussein Bin Talal University, College of Science, Physics Department, Ma’an, Jordan Abstract: The electrical properties of conductive carbon black (CB) nanoparticles (0.1wt percent) doped thin films made of poly(ethylene oxide) (PEO) filled with varying amounts of the electrolyte potassium alum salt and doped with conductive carbon black (CB) nanoparticles (0.1wt percent) have been investigated. The dependence of the activation energy of the composites on frequency, temperature, and filler content was studied using the AC impedance technique. The current research looked at how activation energy changed with frequency (200-1000 kHz) and temperature (30-55 o C) for composites with varied potassium alum salt concentrations: 0, 2, 4, 8, 12, and 16 wt. percent. The activation energy (Ea) values measured exhibited frequency, temperature, and filler content relationships. According to polarization processes, the activation energy of the produced sheets decreases with the potassium alum salt content in the composite and decreases with the temperature. With increasing frequency, the activation energy of the produced thin films decreases. Keyword: poly(ethylene oxide)(PEO), CB, potassium alum, activation energy, frequency, temperature 1.Introduction Plastics, whose molecules are made up of long groups of carbon and hydrogen atoms, have few or no free electrons. Therefore, most of them are bad conductors of electricity. So that scientist focused on enhancing their electrical conductivity and improving their properties. Polymers can be n-type (that is, the dominant free electron) or p-type (that is, the dominating hole), just like semiconductors. Polymers display a variety of electrical properties that reflect their molecular structures and kinetics. By adding appropriate impurities, the electrical characteristics can be tailored to meet specific needs [1]. Polymer compounds are materials in which a second component with very distinct properties is combined with the polymer to improve the product's attributes. The second component reinforces the product by enhancing its hardness or strength [2]. Composite materials have evolved into standard technological materials that are designed and produced for a wide range of uses. Composites seem to be the preferred material for a wide range of engineering and science applications today. They are distinguished by their ease of fabrication, low cost, and excellent strength. It's usually applied to a matrix to help it enhance or change its qualities. The reinforcement disperses uniformly throughout the matrix in a discontinuous phase [3]. When a filler/polymer matrix composition is used instead of a pure polymer electrolyte, it can improve ionic conductivity and interfacial contact [4]. Poly(ethylene oxide) (PEO) is a crystalline thermoplastic polymer that is widely used in industrialized countries due to its favorable properties: it is a neutral, non-toxic, and water-soluble polymer with a low cost. Polyethylene oxide (PEO) is represented by the formula (-CH2CH2O-) n, where n is the number of oxygen-ethylene groups in the main polymer chain. Figure 1 shows the chemical structure of the repeating unit of ethylene oxide. *email: abeerdiab@ymail.com