Piezo-electric properties of polypropylene laminates with a non-woven layer

Kacprzyk, R.; Kisiel, Anna

doi:10.1088/1742-6596/418/1/012060

Cited by 2 publications

(3 citation statements)

References 6 publications

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“…A piezoelectric material can be produced from a nonpolar polymer such as PP when the polymeric material contains fillers or empty cavities (i.e., cellular structure), which can accumulate the supplied electric charge [ 6 , 14 , 15 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ]. However, in the case of the film that has no cellular structure or fillers, the formation of stable electrets is possible owing to the presence of some internal irregularities in the polymer chains.…”

Section: Resultsmentioning

confidence: 99%

Corona Charging of Isotactic-Polypropylene Composites

et al. 2021

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A new approach to obtaining piezoelectric polymeric films based on the isotactic-polypropylene (i-PP) using corona discharge with the energy of 45 W·min/m2 was presented. Detailed analyses with Atomic Force Microscopy (AFM) led to the conclusion that the surface quality was the important factor influencing the possibility of charging the i-PP composites, which was necessary to induce the permanent piezoelectric effect. It has been found that the high surface smoothness of the polymer films contributed to improved piezoelectric properties without the need for an additional polymer modification such as orientation, foaming or doping with fillers. The values of the piezoelectric constant, d33, of the studied samples were compared to these values for the analogous systems polarized with a constant electric field of 100 V/μm. The milder conditions of the film polarization during the corona discharge process are sufficient to achieve the electrets in i-PP films. The simple and cheap method proposed can be profitable in obtaining flexible electrets in the form of thin films for the production of personal biomedical sensors.

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Section: Resultsmentioning

confidence: 99%

Corona Charging of Isotactic-Polypropylene Composites

et al. 2021

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“…Combining of expressions (4) to (6) under assumptions, that the applied pressure 1 Y p  and the same basic polymer of both of the layers (the "soft" layer -with a thickness x 1 and solid -with a thickness x 2 are made of the same basic polymer with relative permittivity ɛ 2 ) leads to the following relation for the d 33 coefficient:…”

Section: Piezoelectric Properties Of Layered Dielectric Structuresmentioning

confidence: 99%

“…The sample (1) was placed between the fixed and rigid measuring electrode (2), located on an insulator (3) and the grounded, movable electrode (4). Voltage measurements were carried out using the electrometer (5) RFT-6302 with an attached measurement capacitor (6). The total capacity of the voltage measurement system (including measurement capacitor, the cable and voltmeter input capacitances and sample capacitance) was equal to C T =1.57 nF.…”

Section: Measurements Of Piezoelectric Coefficient D 33mentioning

confidence: 99%

Dependence of the piezoelectric coefficient d33 on the static pressure for non-uniform polymeric layered structures

Kacprzyk

Pleban-Okopna

2018

ELECTROTECHNICAL REVIEW

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Dependence of the piezoelectric coefficient d 33 on the static pressure for non-uniform polymeric layered structures Streszczenie. W pracy przedstawiono model opisujący zależność współczynnika piezoelektrycznego d 33 (p) od przyłożonego ciśnienia p dla niejednorodnych dielektrycznych struktur warstwowych. Wcześniejsze badania wykazały, że charakter zmian d 33 (p) dla wymienionych struktur może być określony zależnością współczynnika sprężystości warstwy miękkiej Y 1 (p) od obciążenia. Przedstawiony model dotyczy struktury zawierającej warstwę elastyczną w postaci włókniny, dla której zależność współczynnika sprężystości może być opisana modelem odkształcania włókien. Analiza modelu wskazuje, że zależność d 33 (p) można opisać funkcją potęgową typu d 33 (p)=Ap n. Potęgowy charakter zależności d 33 (p), z wartością-0.20 < n <-0.12 potwierdzono doświadczalnie. Zależność współczynnika piezoelektrycznego d33 od obciążenia statycznego dla niejednorodnych struktur polimerowych.

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Piezo-electric properties of polypropylene laminates with a non-woven layer

Cited by 2 publications

References 6 publications

Corona Charging of Isotactic-Polypropylene Composites

Corona Charging of Isotactic-Polypropylene Composites

Dependence of the piezoelectric coefficient d33 on the static pressure for non-uniform polymeric layered structures

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