Dielectric properties enhancement of PVC nanodielectrics based on synthesized ZnO nanoparticles

Mansour, Shehab A.; Elsad, R. A.; Izzularab, Mohamed A.

doi:10.1007/s10965-016-0978-5

Cited by 64 publications

(35 citation statements)

References 24 publications

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“…For filler concentration range from 0 to 1 wt%, the dependency of e 0 on filler concentration showed the common almost decreasing trend with increasing NPs concentration. This significant dependency of e 0 on filler concentration has previously been observed for nanocomposites at low filler concentrations [5,7,8,[33][34][35][36]. Such dependency reflects the good interaction between NPs and HDPE matrix especially for low concentration up to 1 wt%.…”

Section: Dielectric Spectroscopic Propertiessupporting

confidence: 66%

“…In particular, the introduction ZnO NPs, 1 and 3 wt%, into HDPE matrix offers the increasing number of the trapped charge carriers which play role in reducing the carrier mobility and delay the final breakdown [7,13]. Such trap sites come from the variation of the charge distribution on the surface of the ZnO NPs due to surface defect of NPs and the changing in polymer structure such as free volume [6,8].…”

Section: Dielectric Breakdown Strengthmentioning

confidence: 99%

“…A lot of research works have been proved that the introduction of metal oxide NPs into polymer has unique dielectric behavior and advantages when compared to the base polymer and the polymer filled with conventional micrometric particles [4]. The origin of these advantages would be mainly attributed to the large interfacial area of NPs with fine dispersion and the specific interfacial region between NPs and polymer [5][6][7]. Indeed, the free volume in such interfacial region is changed by incorporation of NPs into polymer matrix which accompanied by changing in space charge distribution.…”

Section: Introductionmentioning

confidence: 99%

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Dielectric investigation of high density polyethylene loaded by ZnO nanoparticles synthesized by sol–gel route

Mansour

Elsad

Izzularab

2016

J Sol-Gel Sci Technol

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Zinc oxide nanoparticles (ZnO NPs), with wurtzite structure, were synthesized using sol-gel route. Both the microstructure and morphology of the synthesized ZnO NPs were examined using X-ray diffraction, Fourier transform infrared and high-resolution transmission electron microscopy. The synthesized ZnO NPs up to 5 wt% were introduced to high density polyethylene (HDPE) using melt blending technique. The dielectric properties of the fabricated HDPE/ZnO nanocomposites were studied by measuring the dc dielectric breakdown strength at constant 1 kV/s ramp. The dielectric strength values were showed ZnO nanofiller concentration dependency. Enhancement in breakdown strength has been observed with addition of ZnO NPs and reached to 17 ± 3.1 % (for HDPE/1 wt% ZnO) with respect to the pure HDPE sample. The real part of the permittivity (e 0 ) and the loss tangent (tan d) dependency on filler concentration was studied under different applied frequency values from 1 kHz to 1 MHz. As well as the variation of the dielectric parameters (e 0 and tan d) was studied throughout temperature range from room temperature to 120°C. Graphical Abstract30 40 50 60 70 80 202 004 201 112 200 103 110 102 101 002 100 Intensity (a.u.) ZnO nanoparticles with wurtzite structure + HDPE using melt blending technique 0 1 2 3 4 5 50 60 70 80 90 Dielectric Stength (kV/mm) ZnO-NPs Concentration (wt%) 2 (degree)

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Section: Dielectric Spectroscopic Propertiessupporting

confidence: 66%

Section: Dielectric Breakdown Strengthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dielectric investigation of high density polyethylene loaded by ZnO nanoparticles synthesized by sol–gel route

Mansour

Elsad

Izzularab

2016

J Sol-Gel Sci Technol

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“…Such figure reveals the formation of the agglomeration of the particles, and the obtained particles are in like‐spherical shape with diameter ranging from 50 to 200 nm. The aggregation of nanoparticles could be decreased by using ultrasonic radiation during fabrication process of polymer nanocomposites . Figure shows FE‐SEM micrographs of Fe 2 O 3 /PVC nanocomposite sample with 1 wt% Fe 2 O 3 as an example of the fabricated nanocomposites.…”

Section: Resultsmentioning

confidence: 99%

“…The used fabrication procedure was reported elsewhere with some modifications. In the typical procedure, the desired weight of Fe 2 O 3 was added to 15 mL of tetrahydrofuran (THF) and stirred using magnetic stirrer for 1 hour.…”

Section: Experimental Techniquesmentioning

confidence: 99%

Dielectric spectroscopic analysis of polyvinyl chloride nanocomposites loaded with Fe₂O₃ nanocrystals

Mansour

Elsad

Izzularab

2018

Polymers for Advanced Techs

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Iron oxide (α‐Fe2O3) nanocrystals powder was successfully synthesized via the sol‐gel method. The microstructural examination of the synthesized nanocrystals confirmed the formation of α‐Fe2O3 (hematite) structure using X‐ray diffraction and Fourier transform infrared. The synthesized nano‐hematite powder with different weight percentage up to 5 wt% was introduced to polyvinyl chloride (PVC) to fabricate PVC/Fe2O3 nanocomposites using the solution‐cast technique. The dielectric spectroscopic analysis for the investigated samples has been studied at room temperature and at different temperatures up to 120°C. The real part of the permittivity (ε′) exhibited a significant dependence on filler concentrations throughout whole temperature range. However, the dependency of both of the loss tangent (tanδ) and AC conductivity (σac) on filler concentrations is more pronounced at temperatures higher than room temperature. The obtained values of tan δ for the investigated nancomposites referred to the α‐relaxation around 70°C, which is close to glass transition temperature of the investigated PVC. The dependency of the dielectric strength on Fe2O3 nanofiller concentration was observed with enhancement in the dielectric strength reach to 20.5% for PVC/0.7 wt% Fe2O3 nanocomposite higher than the recorded value for the pristine PVC.

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Exploring the effect ofTiO₂and ionic liquid on the dielectric properties of polyurethane and polyaniline blend nanocomposites

Dash

Sahoo

2022

Polymer International

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Conductive polymer nanocomposites are enormously potent multifunctional lightweight flexible materials used in various electronic devices owing to their excellent dielectric characteristics with interesting relaxation behavior. In this present context, dielectric properties like dielectric permittivity (ε′), dielectric loss (ε″), AC conductivity (σac), real and imaginary impedance (Z′ and Z″), Nyquist plots, etc., of thermoplastic polyurethane/polyaniline/TiO2 (TPU/PANI/TiO2) nanocomposite films with 0–2 wt% TiO2 loading level have been studied. The dielectric analysis in the frequency range of 1 Hz to 1 MHz reveals that ε', σac, Nyquist plot as well as the relaxation behavior have been effectively tuned up to 1.5 wt% TiO2 loading level. The very high interfacial polarization of the dipoles at the interface is reflected in the ultrahigh value of ε′. The semicircular nature of the Nyquist plots is well explained by the cyclic movement of the charge and the high extent of charge storage. The significant improvement in dielectric properties in 1‐butyl‐3‐methylimidazolium hexafluorophosphate ionic liquid (IL)‐incorporated nanocomposite system reflects the coupling as well as dispersibility of IL. The reduction in ε′ and σac, and increase in bulk resistance with an increase in temperature indicate the positive temperature coefficient behavior of the developed nanocomposite systems. The adequate interaction between TiO2, TPU and PANI phases has been analyzed using X‐ray diffraction. The significant dispersing ability and coupling activity of the IL has been explored from micrographs obtained from a scanning electron microscopy study. © 2021 Society of Industrial Chemistry.

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Dielectric properties enhancement of PVC nanodielectrics based on synthesized ZnO nanoparticles

Cited by 64 publications

References 24 publications

Dielectric investigation of high density polyethylene loaded by ZnO nanoparticles synthesized by sol–gel route

Dielectric investigation of high density polyethylene loaded by ZnO nanoparticles synthesized by sol–gel route

Dielectric spectroscopic analysis of polyvinyl chloride nanocomposites loaded with Fe₂O₃ nanocrystals

Exploring the effect ofTiO₂and ionic liquid on the dielectric properties of polyurethane and polyaniline blend nanocomposites

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Dielectric properties enhancement of PVC nanodielectrics based on synthesized ZnO nanoparticles

Cited by 64 publications

References 24 publications

Dielectric investigation of high density polyethylene loaded by ZnO nanoparticles synthesized by sol–gel route

Dielectric investigation of high density polyethylene loaded by ZnO nanoparticles synthesized by sol–gel route

Dielectric spectroscopic analysis of polyvinyl chloride nanocomposites loaded with Fe2O3 nanocrystals

Exploring the effect ofTiO2and ionic liquid on the dielectric properties of polyurethane and polyaniline blend nanocomposites

Contact Info

Product

Resources

About

Dielectric spectroscopic analysis of polyvinyl chloride nanocomposites loaded with Fe₂O₃ nanocrystals

Exploring the effect ofTiO₂and ionic liquid on the dielectric properties of polyurethane and polyaniline blend nanocomposites