Enhancing Dielectric Properties of Polymer Nanocomposites via GraftingPolymer Chains onto rGO Surface

This study presents an approach to enhance the dielectric properties of polymer nanocompositesthrough the grafting of poly(butyl acrylate) chains onto the surface of reduced graphene oxide(PBA@rGO). Initially, GO was modified to incorporate (۳-Aminopropyl)triethoxysilane (APTES)and α-Bromoisobutyryl bromide (BiBB) and then grafted by polymer chains via Atom TransferRadical Polymerization (ATRP). The resulting PBA@rGO was then integrated into a copolymermatrix of butyl acrylate and methyl methacrylate (fBA=۰.۵). The resulting polymer/PBA@rGOnanocomposite showed improved permittivity and reduced dielectric loss, attributed to theinterfacial polarization and mechanism of microcapacitors, as well as optimized chain dynamics inthe interphase region

کلیدواژه ها:

Reduced graphene oxide ، Polymer grafting ، Dielectric properties ، Polymernanocomposites