Gamma irradiation effects on conductivity and dielectric behaviour of PEO-based nano-composite polymer electrolyte systems

Sunitha, V. R.; Radhakrishnan, Shanthi

doi:10.1007/s00289-019-02770-7

Cited by 19 publications

(8 citation statements)

References 37 publications

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“…Notably, the values of at the minimising frequencies of the irradiated films have the same values of non-irradiated samples and they are approximately zero, demonstrating of electrode polarisation repression. As noted, the values decrease with irradiation due to the increase in the polymer segmental movement, which leads to the enhancement of free carriers and conductivity [61]. Additionally, values of were gradually decreased by increasing ion irradiation owing to an increase of dipole mobility, which leads to the facility of the hopping mechanism [62].…”

Section: Resultsmentioning

confidence: 99%

Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Abdelhamied

Abdelreheem

Atta

2021

Plastics, Rubber and Composites

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In this work, a solution cast technique was used to prepare flexible nanocomposite films of PVA/ PANI/Ag with different concentrations of PANI and AgNPs. The samples were described by X-ray diffraction (XRD), transmission electron microscope (TEM), and infrared spectroscopy, which confirmed the successful synthesis of the nanocomposite films. After that, the PVA/10%PANI/ 6%Ag nanocomposite film was irradiated by different influences of the oxygen ion beam (8 × 1017, 16 × 1017, and 24 × 1017 ions/cm2). The Ac conductivity, dielectric properties, electric modulus, complex impedance behaviour, and the energy density efficiency of the nonirradiated and irradiated films were measured in the frequency range of 100-106 Hz. The results revealed significant changes in these parameters with an increase in concentrations of PANI and Ag nanoparticles inside the host and also with ion beam irradiation. The reported improvements in this study would open the road for appropriating the unirradiated and irradiated nanocomposite films for electromagnetic shielding and optoelectronic applications.

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Section: Resultsmentioning

confidence: 99%

Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Abdelhamied

Abdelreheem

Atta

2021

Plastics, Rubber and Composites

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“…Relaxation behaviour is said to be short delay while the dipoles recover to its original state from polarized state [47] . Tan δ increases from the least frequency through increase in frequency, since the ohmic resistance was dominant than the dipole capacitance [51] . When frequency increases to high, tan δ diminishes, since ohmic portion becomes independent from the applied frequency and the reactance component raises [49] .…”

Section: α = 2303 × (A/d) (2)mentioning

confidence: 99%

“…Electrochemical stability of GPE is considered to be an essential part to study the maximum potential limits possibile to a cell [53] . To determine the electrolyte stability of the synthesized material Linear sweep Voltammetry (LSV) was studied [51] . LSV was analyzed to examine the stability of GPE acquires, which is de ned as electrochemical operating window [54][55] .…”

Section: α = 2303 × (A/d) (2)mentioning

confidence: 99%

Electrochemical analysis of the fabricated cell with PVA based silver ion conducting Gel Polymer Electrolyte

Parthiban

Sundari

C.V.S

et al. 2022

Preprint

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Electrochemical analysis of Silver ion conducting Gel polymer Electrolyte (Ag-GPE) was done with Linear sweep Voltammetry (LSV) and Cyclic Voltammetry (CV). The silver ion conducting GPE was prepared by solution casting technique with PVA as polymer, AgBF4 as salt and de-ionized water as solvent. The synthesized films were-characterized using XRD and-FTIR to study the structural and functional characteristics of GPE and confirmed the complexation between polymer and salt. The optical properties of the Ag-GPE sample was studied by UV-Vis spectrophotometer. The highest ionic conductivity, 1.28 × 10− 5 Scm-1 was observed for Ag-GPE sample (60:40 wt%) by AC impedance. Dielectric studies of Ag-GPE samples were done from AC impedance data. LSV used to analyze the electrochemical working voltage of the synthesized material, which is found to be 1.1V. CV studies were done for highest ion conducting GPE (60:40 wt%) by fabricating two different cells. The first cell SS/GPE/Ag showed good stability up to 25 cycles and the second cell Ag/GPE/Zn was analysed for the re-dox reaction of the cell which shows the electrochemical behaviour of battery and confirmed that, the synthesized material can be used for energy storage applications.

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“…According to several reports on the effects of gamma irradiation on ZnO nanocomposites, the polymer composites can undergo significant physical changes with different modifications when subjected to γ radiation. These changes can affect the properties of the irradiated polymer composites, such as structural scission or cross-linking, modification of the degree of filler particle aggregation, creation of holes or cavities, modification of band gap values, and/or the formation of more dipoles [14][15][16][17][18][19][20][21][22][23][24][25]. Several scientific research papers in the literature reported the effect of gamma radiation on the physical properties of ZnO, CB, and/or epoxy polymer nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Effects of γ-Irradiation and Sample Aging on the AC-Electrical Properties of Epoxy/ZnO/CB Hybrid Nanocomposites

Almarahfeh,

Juwhari,

Elimat

et al. 2024

J. Compos. Sci.

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The goal of this paper is to study the effects of gamma irradiation and samples’ aging on the AC-electrical properties of hybrid epoxy resin as a function of frequency, temperature, and (zinc oxide) ZnO content (0, 0.049, 0.099, 0.149, and 0.199 wt) at 0.001 wt of conductive (carbon black) CB nanoparticles. The irradiation processes were administered at room temperature in a gamma chamber utilizing a Cobalt 60 source of average energy = 1.25 MeV with doses = 100, 750, and 1000 Gy. The AC-electrical properties, including the impedance, dielectric constant, dielectric loss, conductivity, and activation energy of the nanocomposites, were initially studied after years of sample preparations. The collected empirical data were later analyzed before and after the gamma irradiation. The results showed that exposing samples to different doses of gamma radiation affects these AC-electrical properties significantly. It was found that the energy gap decreased as the dosage of gamma radiation increased. This could be explained as the gamma-irradiation processes induce changes in the structure of the epoxy hybrid nanocomposites by reinforcing the metal–polymer bonding and hence, causing the release of more free electrons inside the hybrid nanocomposites. Moreover, the sample aging results showed that the AC-electrical conductivity decreased with time for all samples. Hence, this study demonstrated why the γ-irradiation technique can be considered a powerful way to treat, recover, and/or enhance the electrical features of the tested epoxy hybrid nanocomposites.

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Gamma irradiation effects on conductivity and dielectric behaviour of PEO-based nano-composite polymer electrolyte systems

Cited by 19 publications

References 37 publications

Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Electrochemical analysis of the fabricated cell with PVA based silver ion conducting Gel Polymer Electrolyte

Effects of γ-Irradiation and Sample Aging on the AC-Electrical Properties of Epoxy/ZnO/CB Hybrid Nanocomposites

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