Relaxor fluorinated polymers: Novel applications and recent developments

François Bauer, Domingues Dos Santos, Qiming Zhang

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

    Abstract

    It has been found that by introducing defects into the P(VDF-TrFE) copolymers, it is possible to convert the polymer from a normal ferroelectric to a relaxor ferroelectric. A new class of ferroelectric polymers, i.e., the terpolymers of P(VDF-TrFE-CFE) or of P(VDF-TrFE-CTFE), was developed from the normal ferroelectric PVDF-TrFE polymer by employing proper defect modifications which eliminate detrimental effects associated with a normal first order F-P transition while maintaining high material responses. Relevant studies show that this class of electroactive polymers offers unique properties in comparison with other ferroelectric polymers. The syntheses of these relaxor ferroelectric polymers have been done by a combination of the suspension polymerization process and an oxygen-activated initiator at a temperature of 40 °C. Films from cast solution can be made in different length and thicknesses. Stretching of these films increases the performance as well as the mechanical properties. These relaxor-ferroelectric terpolymers P(VDF-TrFE-CFE), P(VDF-TrFE-CTFE) are multifunctional i.e. electrostrictive material, dielectric for electric energy storage. The terpolymer exhibits high electrostrictive strain (>7%) with relatively high modulus (>0.4GPa). Examples of devices applications using unimorphe systems are presented. Micropump and Optical device concerning a liquid-filled varifocal lens on a chip are described.

    Original languageEnglish (US)
    Title of host publicationElectroactive Polymer Actuators and Devices (EAPAD) 2011
    DOIs
    StatePublished - May 17 2011
    EventElectroactive Polymer Actuators and Devices (EAPAD) 2011 - San Diego, CA, United States
    Duration: Mar 7 2011Mar 10 2011

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    Volume7976
    ISSN (Print)0277-786X

    Other

    OtherElectroactive Polymer Actuators and Devices (EAPAD) 2011
    CountryUnited States
    CitySan Diego, CA
    Period3/7/113/10/11

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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  • Cite this

    Bauer, F., Santos, D. D., & Zhang, Q. (2011). Relaxor fluorinated polymers: Novel applications and recent developments. In Electroactive Polymer Actuators and Devices (EAPAD) 2011 [79761Y] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7976). https://doi.org/10.1117/12.879586