Characterization of piezoelectric films of foamed polyethylene obtained by extrusion

Kaczmarek, Halina; Klimiec, Ewa; Królikowski, B.; Chylińska, Marta; Machnik, Monika

doi:10.1007/s10854-017-7575-1

Cited by 8 publications

(14 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The voids created inside the polymer were responsible for the formation of stable dipoles. Such voided morphology contributing to the creation of electrets in the polymers has been also described by other authors [17][18][19][20][21][22]. To ensure suitable functional features of products, including piezoelectric properties, appropriate amount of amorphous phase should occur in the polymer structure because this phase is responsible for adequate flexibility of the system.…”

Section: Introductionmentioning

confidence: 57%

Influence of glass beads filler and orientation process on piezoelectric properties of polyethylene composites

Kaczmarek

Chylińska

Królikowski

et al. 2019

J Mater Sci: Mater Electron

Self Cite

View full text Add to dashboard Cite

The effect of silica filler (in the form of glass beads) on polyethylene composite properties has been studied. Conditions for obtaining polyethylene-based composites in the extrusion process were developed. Two types of such composites were prepared: non-oriented and oriented in the uniaxial stretching process in a ratio of 3:1. The morphology, microstructure (including crystallinity degree), mechanical resistance, and thermal stability of the obtained composites containing 2.5-10% of the filler were analyzed by the scanning electron microscopy connected with energy dispersive X-ray analysis, X-ray diffraction, differential scanning calorimetry, thermogravimetry methods, and tensile tests. In order to induce piezoelectric effect, the samples were charged with a direct current of 100 V/μm at 85 °C. The piezoelectric properties of the polyethylene composites were determined by the measurement of charge and voltage of current generated during action of stress up to 120 kPa. Piezoelectric coefficients, d 33 and g 33 , versus applied stress were determined and the stability of electrets stored during 2-5 months was tested too. The best piezoelectric properties were found for medium-density polyethylene composite containing 5% of glass beads.

show abstract

Section: Introductionmentioning

confidence: 57%

Influence of glass beads filler and orientation process on piezoelectric properties of polyethylene composites

Kaczmarek

Chylińska

Królikowski

et al. 2019

J Mater Sci: Mater Electron

Self Cite

View full text Add to dashboard Cite

show abstract

“…The presence of voids in the filled PE, observed by SEM, allow for accumulation of electric charge at the interface in this nonpolar polymeric matrix. Such a voided structure, also called cellular structure, has been described in literature for filled polypropylene [29,32,33] or foamed PE [34] and for PVDF [44] exhibiting high piezoelectric effect.…”

Section: Discussionmentioning

confidence: 99%

“…There are many papers describing the piezoelectric properties of isotactic polypropylene [29,30,31,32,33], however, polyethylene (PE), despite its many advantages, has not been used as a piezoelectric in practice so far. Our recent studies have shown that PE, after appropriate modification, can also be considered as a potential piezoelectric material [34]. One of the ways to obtain piezoelectrics is by foaming the polymer, and the other is the addition of inorganic fillers.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric Films Based on Polyethylene Modified by Aluminosilicate Filler

et al. 2019

Self Cite

View full text Add to dashboard Cite

The development, universality and miniaturization of electronic devices leads to the search for new piezoelectric materials, among which recently, polymers play an increasingly important role. In this work, composites based on two types of polyethylene—high density polyethylene (HDPE), and medium density polyethylene (MDPE)—and aluminosilicate fillers were obtained by extrusion process. This method allowed obtaining flexible electrets in the form of a thin film after polarization under a constant electric field of 100 V/μm. The morphology of the composites was characterized by scanning electron microscopy, whereas the crystallinity was determined by X-ray diffraction. The mechanical properties and thermal stability of the composites were examined by means of tensile tests and thermogravimetry, respectively. The piezoelectric characteristics were appointed by measuring the electric charge and the voltage in the polarized samples. Piezoelectric coefficients, and the stability of electrets over time were also determined. Moreover, the effect of film orientation on piezoelectric properties was investigated. Composites with appropriate morphology (i.e., well dispersed filler particles in the polymer matrix and formed holes) were obtained which ensured permanent electrical polarization. It was found that the best piezoelectric, mechanical properties and thermal stability exhibits HDPE composite with 5% of aluminosilicate filler.

show abstract

“…Polimery [np. poli(fluorek winylu) -PVF, poli(dimetylosiloksan) -PDMS] i polimerowe kompozyty o właściwościach piezoelektrycznych oraz odpowiedniej stabilności termicznej mogą stanowić konkurencję dla znanych materiałów ceramicznych tego typu [76][77][78][79][80].…”

Section: Kompozyty I Nanokompozytyunclassified

“…Jednoosiowa orientacja folii wytworzonej z takich kompozytów dodatkowo poprawia termostabilność, co jest bezpośrednio związane ze wzrostem stopnia uporządko-wania makrocząsteczek. Właściwości piezoelektryczne oraz dobrą odporność cieplną uzyskano też w wypadku spienionego PE, dzięki obróbce polegającej na sprasowaniu wytłaczanych folii w odpowiednich warunkach [79]. Otrzymano elektrety o strukturze komórkowej, w której jest możliwe kumulowanie ładunków elektrycznych.…”

Section: Kompozyty I Nanokompozytyunclassified

Advances in studies of thermal degradation of polymeric materials Part I. Literature studies

et al. 2019

Self Cite

View full text Add to dashboard Cite

Przedstawiono bieżące kierunki badań stabilności termicznej polimerów, ze szczególnym uwzględnieniem nowatorskich układów polimerowych: kompozytów i nanokompozytów, polimerów biodegradowalnych, biocydowych i do zastosowań specjalnych. Opisano ogólny mechanizm degradacji termicznej zachodzącej podczas przetwórstwa i podstawowe aspekty kinetyczne tego procesu. Omówiono przykłady badań właściwości termicznych wybranych tworzyw na bazie poliuretanów, żywic epoksydowych, kopolimerów kwasu akrylowego i poliestrów.

show abstract

Characterization of piezoelectric films of foamed polyethylene obtained by extrusion

Cited by 8 publications

References 27 publications

Influence of glass beads filler and orientation process on piezoelectric properties of polyethylene composites

Influence of glass beads filler and orientation process on piezoelectric properties of polyethylene composites

Piezoelectric Films Based on Polyethylene Modified by Aluminosilicate Filler

Advances in studies of thermal degradation of polymeric materials Part I. Literature studies

Contact Info

Product

Resources

About