Elastic and electromechanical properties of polypropylene foam ferroelectrets

M. Dansachmüller, R. Schwödiauer, S. Bauer-Gogonea, S. Bauer (Corresponding Author), Mika Paajanen, Jaakko Raukola

    Research output: Contribution to journalArticleScientificpeer-review

    33 Citations (Scopus)


    Internally charged closed-cell polymer electrets exhibit ferroelectric-like behavior and have been called ferroelectrets. They are attractive for soft electroactive transducers, the high compressibility leads to d33 transducer coefficients exceeding those of ferroelectric polymers. A technique for the measurement of the elastic modulus and the transducer coefficient of ferroelectrets is reported. The elastic behavior of ferroelectretic polypropylene foams is correlated with the piezoelectric-like properties. Prestress treatments linearize the transducer properties.
    Original languageEnglish
    Article number031910
    Number of pages3
    JournalApplied Physics Letters
    Issue number3
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed


    • polymer foams
    • ferroelectric materials
    • electrets
    • elastic moduli
    • stress-strain relations
    • electromechanical effects
    • compressibility


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