Nanoconfined Ferroelectricity in Polymers

ORAL

Abstract

In this presentation, a low loss polystyrene (PS) was grafted as side chains onto the P(VDF-CTFE) main chain. After PVDF crystallization, dielectric PS side chains were segregated to the crystalline-amorphous interface, forming a finite confinement layer for ferroelectric PVDF crystals. We speculated that less space charge was induced during electric poling because of the nanoscale confinement effect. Consequently, a fast discharge speed, relatively high energy density, and low losses were achieved.

*This work is supported by ONR (N00014-05-1-0338) and NSF (DMR-0907580).

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Authors

  • Lei Zhu

    • Department of Macromolecular Science and Engineering, Case Western Reserve University

  • Fangxiao Guan

    • Polymer Program, Institute of Materials Science and Department of Chemical, Materials and Biomolecular Engineering, University of Connecticut

  • Jing Wang

    • Polymer Program, Institute of Materials Science and Department of Chemical, Materials and Biomolecular Engineering, University of Connecticut

  • Qing Wang

    • Department of Materials Science and Engineering, Pennsylvania State University