Polymer Blends of Polyetherimide and Poly(ether ester urethane): Controlling Dielectric Properties for Ultrahigh Energy Storage.

ABSTRACT: Polymer dielectrics offer outstanding advantages for high-power energy storage applications, such as high breakdown strength (E_b) and efficiency (η), while both decrease rapidly at elevated temperature (>150 °C). Although several strategies including nanocomposites and crosslinking have been evaluated to enhance E_b and heat resistance, the discharged energy density (U_d) of polymer dielectrics is still limited by the low dielectric constant (K). Herein, we have implemented a blending strategy by utilizing hydrogen bonding interactions between molecular chains for polyetherimide (PEI) and poly(ester ether urethane) (PEEU). Both the experimental and computational simulation results reveal that the blending can contribute to t

SUBMITTER: Lu T 

PROVIDER: S-EPMC12694172 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature