Ferroelectric polymers with chemically tunable dielectric constants

Yingying Lu, Jason Claude, Kun Li, Qiming Zhang, Qing Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a modular approach toward poly(vinylidene fluoride) based ferroelectric polymers with high dielectric constants and energy densities. This strategy is based on a two-step reaction including the co-polymerization of vinylidene fluoride (VDF) and chlorotrifluoroethylene (CTFE) and a subsequent hydrogenation reaction. Due to the similar reactivity of VDF and CTFE in free radical polymerization and quantitative yield of dechlorination reaction, the chemical compositions of the resulting terpolymers can be precisely controlled, leading to tunable Curie temperatures and dielectric constants. A library of the ferroelectric polymers with dielectric constants varying from 11 to 50 measured at 1 kHz and room temperature has been prepared. The structural characteristics including microstructure, chain conformation, and crystallinity of the polymers have been carefully elucidated as a function of the chemical composition by 1H and 19F NMR, Fourier transform infrared spectroscopy, and wide angle X-ray diffraction. The influence of the polymer compositions on thermal transitions and dielectric constants has also been investigated.

Original languageEnglish (US)
Title of host publicationSmart Dielectric Polymer Properties, Characterization and Their Devices
PublisherMaterials Research Society
Pages74-84
Number of pages11
ISBN (Print)9781604234053
DOIs
StatePublished - Jan 1 2006
Event2006 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 27 2006Dec 1 2006

Publication series

NameMaterials Research Society Symposium Proceedings
Volume949
ISSN (Print)0272-9172

Other

Other2006 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/27/0612/1/06

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Lu, Y., Claude, J., Li, K., Zhang, Q., & Wang, Q. (2006). Ferroelectric polymers with chemically tunable dielectric constants. In Smart Dielectric Polymer Properties, Characterization and Their Devices (pp. 74-84). (Materials Research Society Symposium Proceedings; Vol. 949). Materials Research Society. https://doi.org/10.1557/proc-0949-c04-01