Dielectric behavior of EVA/EOC/xGnP ternary microcellular nanocomposites

Parida, S. K.; Malik, Rajasmita; Parida, R.K.; Nc, Nayak

doi:10.1007/s10854-022-09128-2

Cited by 3 publications

(3 citation statements)

References 38 publications

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“…At the higher content of O‐MWCNTs, the conduction behavior indicates that the continuous conductive networks are formed within the composites due to the increased direct contacts of two adjacent MWCNTs. This enhancement is due to the polarization phenomena and localized charge carriers 79 . According to Figure 11(B), the DC conductivity values increase gradually with an increase in the concentration of O‐MWCNTs.…”

Section: Resultsmentioning

confidence: 88%

“…This enhancement is due to the polarization phenomena and localized charge carriers. 79 According to Figure 11(B), the DC conductivity values increase gradually with an increase in the concentration of O-MWCNTs. With the addition of conductive nanofillers, the electrical conductivity behaviors can be elucidated by the percolation hypothesis.…”

Section: Nyquist Plotmentioning

confidence: 93%

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Two‐dimensional Ti₃C₂T_x (MXene)‐multiwalled carbon nanotubes reinforced ethyl methyl acrylate/ethylene octene copolymer binary blend hybrid nanocomposites with enhanced thermal and dielectric properties

Malik,

Parida,

Parida

et al. 2023

Polymer Composites

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Polymer composites with high dielectric constant and minimal dielectric losses have wide ranging prospects for advanced applications in the flexible electronics and electrical industry. In this study, we used the advantages of carbonaceous hybrid nanofillers to develop a flexible dielectric material. Herein, a set of hybrid nanocomposites were successfully fabricated by incorporating the Ti3C2Tx (MXene) and MWCNTs (multi‐walled carbon nanotubes) hybrid mixture as the conductive moiety into the poly(ethylene‐co‐methyl acrylate) (EMA)/ethylene‐octene co‐polymer (EOC) binary blend as the matrices using solution mixing technique followed by compression molding. As prepared, EMA/EOC/Ti3C2Tx/MWCNTs hybrid composites have been characterized by FTIR (Fourier transform infrared) spectroscopy, XRD (X‐ray diffraction), TGA (thermogravimetric analysis), FESEM (field emission scanning electron microscopy), and DSC (differential scanning calorimetry). We studied the effects of Ti3C2Tx and MWCNTs contents in the hybrid composites on the thermal, dielectric, and electrical properties. Among all the 15 wt% hybrid mixture containing 2 wt% MWCNTs loaded composite has the highest dielectric constant (ℇr = 122.21) and the lowest dissipation loss (tan δ = 0.030) at 100 Hz. The present studies recommend the EMA/EOC/Ti3C2Tx/MWCNTs hybrid composites can be used in smart and flexible electronic storage material.Highlights EMA‐EOC blend composites with hybrid Ti3C2Tx/MWCNTs were processed. 2.5 wt% MWCNTs loaded hybrid composite shows excellent thermal stability. Composite with 2 wt% MWCNTs has ℇ' = 122.21 and tanδ = 0.03 at 100 Hz. 2.5 wt% MWCNTs composite has electrical conductivity of 3.26 × 10−8 Ω−1 m−1. This composite can be used in smart and flexible electronic storage material.

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Section: Resultsmentioning

confidence: 88%

Section: Nyquist Plotmentioning

confidence: 93%

Two‐dimensional Ti₃C₂T_x (MXene)‐multiwalled carbon nanotubes reinforced ethyl methyl acrylate/ethylene octene copolymer binary blend hybrid nanocomposites with enhanced thermal and dielectric properties

Malik,

Parida,

Parida

et al. 2023

Polymer Composites

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“…A low metal content is sufficient for such ternary composite materials to exhibit a sufficient level of conductivity to be used as electrodes in electrochemical cells [ 72 , 73 , 74 ]. By replacing the metal itself with carbonaceous particles, including the use of pyrolyzed vegetable fibres [ 75 ], foams [ 76 ] or different carbon particles [ 77 , 78 , 79 , 80 ], it is possible to enable the design of materials at the level of performance required for their specific technological applications. In this sense, it is noticeable that the dispersion of zinc microparticles in increasing proportions in the EVA polymeric matrix increases the electrical conductivity of the composite, although it was observed that only the metallic microparticles in contact with the medium for all the proportions tested appear to suffer from chemical corrosion, since the electrical propagation processes for the material were not altered because the polymeric matrix acts as a protective barrier against the corrosion of the particles inside.…”

Section: Discussionmentioning

confidence: 99%

A Macroscopic Interpretation of the Correlation between Electrical Percolation and Mechanical Properties of Poly-(Ethylene Vinyl Acetate)/Zn Composites

Agrisuelas,

Balart,

García-Jareño

et al. 2024

Materials

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Elastic composites were prepared using a procedure involving hot plates and zinc powder that was directly dispersed into an EVA matrix. The correlation between the zinc content and the conductive properties of the material was studied via impedance spectroscopy, the thermal properties of the material were studied via differential calorimetry and the mechanical properties of the composites were studied via tensile strength curves, representing an important advancement in the characterization of this type of composite material. The composites’ tensile strength and elongation at break decrease with the addition of filler since zinc particles act as stress-concentrating centres, while the composites’ hardness and Young’s modulus increase because of an increase in the stiffness of the material. The AC perturbation across the EVA/Zn composites was characterized using an RC parallel equivalent circuit that allowed us to easily measure their resistivity (ρp) and permittivity (εp). The dependence of these electrical magnitudes on the zinc content is correlated with their mechanical properties across the characteristic time constant τp = ρp·εp of this equivalent circuit. The dependence of the mechanical and electrical magnitudes on the zinc content is consistent with the formation of percolation clusters. The addition of graphite particles increases their potential performance. Three possible mechanisms for the electrical transport of the ac-perturbation across the EVA/Zn composites have been identified. Chemical corrosion in acid media causes the loss of zinc surface particles, but their bulk physical properties practically remain constant.

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Effects of ethylene‐octene copolymer and ethylene‐propylene copolymer on crystallization, morphology, and foaming properties of ethylene‐vinyl acetate copolymer

Wang,

Hao,

Zou

et al. 2024

Polymer Engineering & Sci

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Ethylene‐octene copolymer (EOC, three EOCs with different octene content used in this study) and propene‐ethylene copolymer (EPC, three EPCs with different ethylene content used in this study) can have effects on the crystallization dynamics, crystal structure, and foaming properties of ethylene‐vinyl acetate copolymer (EVA). For unfoamed EVA/EOC and unfoamed EVA/EPC blends, both EVA/EOC and EVA/EPC blends show phase separation structure. The foam cells in EVA/EOC blends have better uniformity compared to those in EVA/EPC blends, which result from the better compatibility of EVA and EOC than EVA and EPC obtained from the morphology analysis. For the blends with different crystallization ability of EOC or EPC, the blends with lower crystallinity has more uniform cell distribution than blends with higher crystallinity, due to the crystallization zone cause heterogeneous crosslinking and foaming of the blend. Both EOC and EPC can impart higher elasticity to EVA foamed materials. EOC was found to be more suitable for blending with EVA for foamed materials, offering the potential to obtain EVA/EOC foamed materials with excellent performance.Highlights Ethylene‐octene copolymer with higher octene content has better effect on foaming property of ethylene‐vinyl acetate copolymer than ethylene‐propylene copolymer. Ethylene‐propylene copolymer can decrease the foaming temperature of ethylene‐vinyl acetate copolymer. A mechanism of foaming for ethylene‐vinyl acetate copolymer/semi‐crystallized polymer blends is proposed. Achieved in‐depth understanding of structure–property relationship about ethylene‐vinyl Acetate copolymer/polyolefin elastomer foamed material.

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Dielectric behavior of EVA/EOC/xGnP ternary microcellular nanocomposites

Cited by 3 publications

References 38 publications

Two‐dimensional Ti₃C₂T_x (MXene)‐multiwalled carbon nanotubes reinforced ethyl methyl acrylate/ethylene octene copolymer binary blend hybrid nanocomposites with enhanced thermal and dielectric properties

Two‐dimensional Ti₃C₂T_x (MXene)‐multiwalled carbon nanotubes reinforced ethyl methyl acrylate/ethylene octene copolymer binary blend hybrid nanocomposites with enhanced thermal and dielectric properties

A Macroscopic Interpretation of the Correlation between Electrical Percolation and Mechanical Properties of Poly-(Ethylene Vinyl Acetate)/Zn Composites

Effects of ethylene‐octene copolymer and ethylene‐propylene copolymer on crystallization, morphology, and foaming properties of ethylene‐vinyl acetate copolymer

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Dielectric behavior of EVA/EOC/xGnP ternary microcellular nanocomposites

Cited by 3 publications

References 38 publications

Two‐dimensional Ti3C2Tx (MXene)‐multiwalled carbon nanotubes reinforced ethyl methyl acrylate/ethylene octene copolymer binary blend hybrid nanocomposites with enhanced thermal and dielectric properties

Two‐dimensional Ti3C2Tx (MXene)‐multiwalled carbon nanotubes reinforced ethyl methyl acrylate/ethylene octene copolymer binary blend hybrid nanocomposites with enhanced thermal and dielectric properties

A Macroscopic Interpretation of the Correlation between Electrical Percolation and Mechanical Properties of Poly-(Ethylene Vinyl Acetate)/Zn Composites

Effects of ethylene‐octene copolymer and ethylene‐propylene copolymer on crystallization, morphology, and foaming properties of ethylene‐vinyl acetate copolymer

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Product

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Two‐dimensional Ti₃C₂T_x (MXene)‐multiwalled carbon nanotubes reinforced ethyl methyl acrylate/ethylene octene copolymer binary blend hybrid nanocomposites with enhanced thermal and dielectric properties

Two‐dimensional Ti₃C₂T_x (MXene)‐multiwalled carbon nanotubes reinforced ethyl methyl acrylate/ethylene octene copolymer binary blend hybrid nanocomposites with enhanced thermal and dielectric properties