Preparation and Characterization of Electrostrictive Polyurethane Films with Conductive Polymer Electrodes

Ji Su, Qiming Zhang, Pen Cheng Wang, Alan G. MacDiarmid, Kenneth J. Wynne

    Research output: Contribution to journalArticlepeer-review

    50 Scopus citations


    All-polymer electrostrictive soft films were developed for the first time by depositing conductive polymer (polypyrrole) directly on both sides of solution-cast electrostrictive polyurethane elastomer films. The final composite films are flexible with strong adhesion between the polyurethane film and the conductive polymer electrode. The conductivity (sheet resistivity ∼1000Ω/), of the polymer electrode is appropriate for its intended use. The compatible interface between the polypyrrole electrode polymer and the electrostrictive polyurethane significantly improves the acoustic and optical transparency of these composite films, compared with using a metal electrode film. The all-polymer films also exhibit comparable dielectric properties to gold-electroded polyurethane films in the temperature range from -40°C to +80°C. The temperature range covers the soft segment glass transition temperature of the polyurethane elastomers, which is about -20°C. The films also show large electric field induced strain responses which are dependent on film thickness and measurement frequency. The electrostrictive characteristics in the all-polymer films show similarities to those of the films with gold electrodes under identical measurement conditions.

    Original languageEnglish (US)
    Pages (from-to)317-321
    Number of pages5
    JournalPolymers for Advanced Technologies
    Issue number6
    StatePublished - Jan 1 1998

    All Science Journal Classification (ASJC) codes

    • Polymers and Plastics


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