High dielectric response in dilute nanocomposites via hierarchical tailored polymer nanostructures

This paper presents a hierarchically designed polymer nanocomposite approach in which nanofillers at ultralow volume loading generate large dielectric enhancement blends of high temperature polymers with tailored nanostructures. We blend poly(1,4-phenylenen ether sulfone) (PES) polymers, such as polyetherimide (PEI), that possess more coiled chain conformations to tailor nano-morphologies. Making use the matrix, dilute nanocomposites 0.65 vol. % alumina nanoparticles (20 nm size) marked performance, i.e., raising constant K from PES = 3.9 (and PEI 3.2) 7.6, much higher compared employing neat matrix. The results show nano-morphologies matrix can lead