Electret Stability Related to the Crystallinity in Polypropylene

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    Abstract

    Through mixing isotactic-polypropylene (i-PP) and atactic-polypropylene (a-PP), we have demonstrated the importance of the crystallinity in polypropylene as an electret material. A high degree of crystallinity in polypropylene, used as an electret, gives a better charge stability towards temperature and humidity changes. The semicrystalline i-PP significantly outperforms a-PP regarding charge stability. a-PP is an amorphous polymer. By mixing a-PP and i-PP the degree of crystallinity can be controlled, while all other sample preparation processes and characteristics can be identical. This is important since the performance of an electret material is sensitive to its previous process history.
    Original languageEnglish
    Title of host publicationProceedings of IEEE Sensors 2015
    PublisherIEEE
    Publication date2015
    Pages1879-1882
    DOIs
    Publication statusPublished - 2015
    Event14th IEEE Sensors 2015 - Busan, Korea, Republic of
    Duration: 1 Nov 20154 Nov 2015
    Conference number: 14
    http://ieee-sensors2015.org/

    Conference

    Conference14th IEEE Sensors 2015
    Number14
    CountryKorea, Republic of
    CityBusan
    Period01/11/201504/11/2015
    Internet address

    Keywords

    • Electret
    • Crystallinity
    • Charge stability
    • Humidity stability
    • Spherulites
    • Isotactic-polypropylrnr
    • Atactic-polypropylene

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