Dielectric enhancement in strongly dipolar polymers: mixing and free volume effects

ORAL

Abstract

Materials with high dielectric constant and low dielectric loss are desired for high performance capacitive energy storage. In dipolar polymer dielectrics, a relatively large free volume gives dipoles more freedom in responding to an external electric field and thus store more energy. An increased dielectric constant while maintaining low loss is achieved by mixing two strongly dipolar polymers: PEEU and ArPTU, both observed in experiments and simulated by molecular dynamics and quantum mechanics computations. Local dipolar disorder, polymer chain distortion, chain separation and free volumes are analyzed.

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Presenters

  • Bing Zhang

    • Department of Physics, North Carolina State Univ

Authors

  • Bing Zhang

    • Department of Physics, North Carolina State Univ

  • Yash Thakur

    • Department of Electrical Engineering, Pennsylvania State University

  • Rui Dong

    • Department of Physics, North Carolina State Univ

  • Wenchang Lu

    • Department of Physics, North Carolina State Univ
    • North Carolina State Univ
    • Department of Physics, North Carolina State University
    • Physics, North Carolina State Univ

  • Ciprian Iacob

    • Materials Science and Engineering, Pennsylvania State University
    • Department of Materials Science and Engineering, Pennsylvania State University

  • James Runt

    • Materials Science and Engineering, Pennsylvania State University
    • Department of Materials Science and Engineering, Pennsylvania State University

  • Qiming Zhang

    • Department of Electrical Engineering, Pennsylvania State University

  • Jerry Bernholc

    • Department of Physics, North Carolina State Univ
    • North Carolina State Univ
    • North Carolina State Univ.
    • Department of Physics, North Carolina State University
    • Physics, North Carolina State Univ