Electrical and dielectric properties of barium titanate – polydimethylsiloxane nanocomposite with 0-3 connectivity modified with carbon nanotube (CNT)

Nawanil, Chanisa; Makcharoen, Worawut; Khaosa-Ard, Krittanat; Maluangnont, Tosapol; Isarakorn, Don; Vittayakorn, Naratip

doi:10.1080/10584587.2019.1570043

Cited by 16 publications

(9 citation statements)

References 20 publications

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“…As high-permittivity particles usually unveil their potential at much higher filler loadings based on Bruggeman's model [4] (Figure 2a), particle size (specific surface area) can play a dominant role in the final composite properties at lower filler loadings. While BaTiO3′s effect on permittivity in the experiment is congruent with the literature on PDMS/BaTiO3 composites [40,41], CCTO's effect is lower than in the known studies [13,14,20]. Mainly, Vudayagiri et al [14] investigated four different PDMS composites of similar permittivity mixed with CCTO.…”

Section: Permittivitysupporting

confidence: 83%

Effects of Ferroelectric Fillers on Composite Dielectric Elastomer Actuator

et al. 2021

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Integrating nano- to micro-sized dielectric fillers to elastomer matrices to form dielectric composites is one of the commonly utilized methods to improve the performance of dielectric elastomer actuators (DEAs). Barium titanate (BaTiO3) is among the widely used ferroelectric fillers for this purpose; however, calcium copper titanate CaCu3Ti4O12 (CCTO) has the potential to outperform such conventional fillers. Despite their promising performance, CCTO-based dielectric composites for DEA application are studied to a relatively lower degree. Particularly, the composites are characterized for a comparably small particle loading range, while critical DEA properties such as breakdown strength and nonlinear elasticity are barely addressed in the literature. Thus, in this study, CCTO was paired with polydimethylsiloxane (CH3)3SiO[Si(CH3)2O]nSi(CH3)3 (PDMS), Sylgard 184, to gain a comprehensive understanding of the effects of particle loading and size on the dielectric composite properties important for DEA applications. The dielectric composites’ performance was described through the figures of merit (FOMs) that consider materials’ Young’s modulus, dielectric permittivity, and breakdown strength. The optimum amounts of the ferroelectric filler were determined through the FOMs to maximize composite DEA performance. Lastly, electromechanical testing of the pre-stretched CCTO-composite DEA validated the improved performance over the plain elastomer DEA, with deviations from prediction attributed to the studied composites’ nonlinearity.

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Section: Permittivitysupporting

confidence: 83%

Effects of Ferroelectric Fillers on Composite Dielectric Elastomer Actuator

et al. 2021

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“…nanoparticles, nanorods, nanowires, nanocubes), crystal type (e.g. cubic, tetragonal, orthorhombic), surface chemical composition, porosity, filler loading, and distributions, a range of dielectric composite material loaded with BaTiO 3 nanoparticles have been formulated [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Recent developments in the synthesis of chemically modified nanomaterials for use in dielectric and electronics applications

et al. 2021

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Polymer nanocomposites (PNC) have attracted enormous scientific and technological interest due to their applications in energy storage, electronics, biosensing, drug delivery, cosmetics and packaging industry. Nanomaterials (platelet, fibers, spheroids, whiskers, rods) dispersed in different types of polymer matrices constitute such PNC. The degree of dispersion of the inorganic nanomaterials in the polymer matrix, as well as the structured arrangement of the nanomaterials, are some of the key factors influencing the overall performance of the nanocomposite. To this end, the surface functionalization of the nanomaterials determines its state of dispersion within the polymer matrix. For energy storage and electronics, these nanomaterials are usually chosen for their dielectric properties for enhancing the performance of device applications. Although several reviews on surface modification of nanomaterials have been reported, a review on the surface functionalization of nanomaterials as it pertains to polymer dielectrics is currently lacking. This review summarizes the recent developments in the surface modification of important metal oxide dielectric nanomaterials including Silicon dioxide (SiO2), titanium dioxide (TiO2), barium titanate (BaTiO3), and aluminum oxide (Al2O3) by chemical agents such as silanes, phosphonic acids, and dopamine. We report the impact of chemical modification of the nanomaterial on the dielectric performance (dielectric constant, breakdown strength, and energy density) of the nanocomposite. Aside from bringing novice and experts up to speed in the area of polymer dielectric nanocomposites, this review will serve as an intellectual resource in the selection of appropriate chemical agents for functionalizing nanomaterials for use in specific polymer matrix so as to potentially tune the final performance of nanocomposite.

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“…The distribution of the conducting phase is seen for varied volume percentages (5%, 15%, and 25%) of CB content. Further, an increase in CB content shows higher conduction phases and agglomeration of CB particles [22,44]. Since the uniform dispersion of the CB is not observed for the nanocomposites with a higher fraction of CB in the present work, better methods in preparing the composites can lead to further improvement in the dielectric constant [45].…”

Section: Morphology Of the Nanocompositementioning

confidence: 94%

“…They have also fabricated and studied the BT/PDMS nanocomposites modified with carbon nanotube (CNT). Different theoretical models were used to predict the dielectric constant of these composites and compare their experimental value with the theoretical value [22].…”

Section: Introductionmentioning

confidence: 99%

Study on low-frequency dielectric behavior of the carbon black/polymer nanocomposite

Hiremath

Mathias

Sondar

et al. 2021

J Mater Sci: Mater Electron

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Recently, polymer-based dielectric materials have become one of the key materials to play an essential role in clean energy production, energy transformation, and energy storage applications. The end usage is the energy storage capability because it is a trade-off between dielectric permittivity, dielectric loss, and dissipation factor. Hence, it is of prime importance to study the dielectric properties of polymer materials by adding filler material at a low-frequency range. In the present study, polydimethylsiloxane/carbon black nanocomposites are prepared using the solution cast method. The dielectric properties, such as dielectric constant, dielectric loss, and dissipation factors due to the concentration of filler particles and low-frequency effect on the nanocomposites, are examined. Also, different empirical models are used to estimate the dielectric permittivity of polymer nanocomposites. The low-frequency range of 100 Hz to 1 MHz and the effect of varying volume fractions of carbon black show a significant change in the dielectric properties. It is found that the nanocomposites have a higher dielectric permittivity than the base polymer material. It is also observed that an increase in filler concentration increases the dielectric permittivity, which is confirmed with an empirical model.

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Electrical and dielectric properties of barium titanate – polydimethylsiloxane nanocomposite with 0-3 connectivity modified with carbon nanotube (CNT)

Cited by 16 publications

References 20 publications

Effects of Ferroelectric Fillers on Composite Dielectric Elastomer Actuator

Effects of Ferroelectric Fillers on Composite Dielectric Elastomer Actuator

Recent developments in the synthesis of chemically modified nanomaterials for use in dielectric and electronics applications

Study on low-frequency dielectric behavior of the carbon black/polymer nanocomposite

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