Wpływ struktury na właściwości piezoelektryczne elektretów polipropylen-montmorylonit

Bogusław Królikowski; Halina Kaczmarek; Ewa Klimiec; Marta Chylińska; Dagmara Bajer

doi:10.14314/polimery.2019.7.4

Published : 2021-01-12

Vol. 64 No. 7-8 (2019)

Influence of structure on piezoelectric properties of polypropylene-montmorillonite electrets

Bogusław Królikowski Halina Kaczmarek Ewa Klimiec Marta Chylińska Dagmara Bajer

DOI: https://doi.org/10.14314/polimery.2019.7.4

Abstract

The effect of the structure, mechanical properties and filler content of isotactic polypropylene (i-PP)/modified montmorillonite (MMT) composite films on their piezoelectric properties was investigated. The introduction of MMT mineral filler into the i-PP allowed to produce the films with cellular structure, confirmed by scanning electron microscopy (SEM), using extrusion method. The uniaxial orientation of the film increased its degree of crystallinity. After polarization in an electric field of intensity ca. 100 V/μm the films showed piezoelectric properties. The stability of obtained electrets was evaluated based on piezoelectric voltage measured during the storage of films at room temperature. The cellular structure and increase in crystallinity degree of the films influenced the increase in piezoelectric charge coefficient d33 compared to neat i-PP. The d33 values obtained under higher and lower stresses of tested specimens are almost twice higher than those determined for solid (compact) poly(vinylidene fluoride) (PVDF) film and non-oriented i-PP film. This opens up the possibility of application of the obtained composite films for pressure sensors with wide applicability due to the relatively not complicated manufacturing method.

Keywords

kompozyty polimerowe ; polipropylen izotaktyczny ; modyfikowany montmorylonit ; napięcie piezoelektryczne ; gęstość ładunku ; stała piezoelektryczna ładunkowa polymer composites ; isotactic polypropylene ; modified montmorillonite ; piezoelectric voltage ; charge density ; piezoelectric charge constant

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Królikowski, B., Kaczmarek, H., Klimiec, E., Chylińska, M., & Bajer, D. (2021). Influence of structure on piezoelectric properties of polypropylene-montmorillonite electrets. Polimery, 64(7-8), 493–498. https://doi.org/10.14314/polimery.2019.7.4

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Bogusław Królikowski b.krolikowski@impib.pl

Affiliation
Instytut Inżynierii Materiałów Polimerowych i Barwników, ul. M. Skłodowskiej-Curie 55, 87-100 Toruń

Halina Kaczmarek

Affiliation
Uniwersytet Mikołaja Kopernika w Toruniu, Wydział Chemii, ul. Gagarina 7, 87-100 Toruń

Ewa Klimiec

Affiliation
Instytut Technologii Elektronowej, Oddział w Krakowie, ul. Zabłocie 39, 30-701 Kraków

Marta Chylińska

Affiliation
Uniwersytet Mikołaja Kopernika w Toruniu, Wydział Chemii, ul. Gagarina 7, 87-100 Toruń

Dagmara Bajer

Affiliation
Uniwersytet Mikołaja Kopernika w Toruniu, Wydział Chemii, ul. Gagarina 7, 87-100 Toruń