Bulletin of the American Physical Society
Spring 2011 Meeting Ohio-Region Section of the APS
Volume 56, Number 3
Friday–Saturday, April 15–16, 2011; University Heights, Ohio
Session E1: Plenary Session IV |
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Chair: Peifang Tian, John Carroll University Room: Dolan Science Center Auditorium |
Saturday, April 16, 2011 10:00AM - 11:00AM |
E1.00001: Nanoconfined Ferroelectric Polymers as High Energy Density and Low Loss Dielectrics Invited Speaker: Although a high electric energy density was recently reported for defect-modified poly(vinylidene fluoride) (PVDF) copolymers at millisecond discharge, they usually deliver less energy due to the ferroelectric property. 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. [Preview Abstract] |
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