Polymer Based ZnO–SiO2 Nanocomposite Flexible Sheets as High Dielectric Materials

Pervaiz, S.; Khan, Ijaz Ahmad; Hussain, Sabir; Kanwal, N.; Farid, Amjad; Saleem, Murtaza

doi:10.1007/s10904-020-01735-y

Cited by 12 publications

(14 citation statements)

References 40 publications

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“…The question is, why a fixed wt.% (10) of ZnO NFs is used in this research work? Pervaiz et al [25] have studied the structural, optical, and dielectric properties of ZnO/PVDF-based flexible sheets, whereas the PVA-based ZnO-SiO 2 NC FSs were synthesized for fixed wt.% (5) of ZnO NFs [26]; therefore, herein, the higher wt.% (10) of ZnO NFs is used to synthesize PVDF-based Ns FSs in order to study the effect of silica NFs on the different properties of PVDF-based NC FSs containing fixed wt.% (10) of ZnO NFs.…”

Section: Methodsmentioning

confidence: 99%

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Thermal and Dielectric Behaviour of Polymer-Based Nanocomposites Flexible Sheets as Highly Stable Dielectric Materials

Pervaiz

Kanwal

Shahzad

et al. 2023

International Journal of Polymer Science

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The silica zinc oxide nanoparticles filled poly-vinylidene-fluoride (PVDF)-based nanocomposite flexible sheets (NC FSs) are synthesized by co-precipitation method. The X-ray diffraction patterns reveal the development of various diffraction planes related to zinc oxide (ZnO) and SiO2 phases. The crystallinity of ZnO phase is decreased with increasing weight percent (wt.%) of silica nanofillers (NFs). The scanning electron microscope microstructure of synthesized PVDF-based NCs FSs is changed with increasing wt.% of silica NFs. The energy-dispersive X-ray spectroscopy and Fourier-transform infrared spectroscopy analyses confirm the presence of different elements and the formation of chemical bonding between them. In high temperature region, the weight-loss of synthesized PVDF-based NCs FSs is decreased from 89.90% to 49.26% with increasing wt.% of silica NFs. The values of dielectric permittivity, loss-factor, impedance, and AC-conductivity of PVDF-based NC FSs synthesized for maximum amount of silica NFs are found to be 13.7, 0.03, 0.16 MΩ, and 19.9 × 10 − 6 S/m, respectively. Results show that the synthesized PVDF-based NC FSs are the potential candidates of light emitting diodes and energy storage devices.

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Section: Methodsmentioning

confidence: 99%

“…Figure 1 illustrates the synthesis process of PVDFbased NC FSs. The detailed synthesis process of PVDFbased NC FSs by CPM can be found in literature [26].…”

Section: Methodsmentioning

confidence: 99%

Thermal and Dielectric Behaviour of Polymer-Based Nanocomposites Flexible Sheets as Highly Stable Dielectric Materials

Pervaiz

Kanwal

Shahzad

et al. 2023

International Journal of Polymer Science

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“…Where C, d, o and A are the capacitance, thickness, permittivity of free space (8.85 × 10 -12 F/m) and area of flexible sheets polymer-based NCs respectively where j = (-1) 1/2 [13]. whereas IP increases due to the greater number of free charges forming dipoles at the interfaces of polymer and nano-fillers.…”

Section: Dielectric and Electrical Analysismentioning

confidence: 99%

Synthesis of Polymer-based ZnO/TiO2 NCs Flexible Sheets as High Dielectric Materials

Kanwal¹,

Pervaiz²,

Rasheed³

et al. 2021

Preprint

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Polymer-based ZnO/TiO2 NCs flexible sheets with high dielectric permittivity and low loss factor have numerous applications in light emitting and energy storage devices. In this work, polymer-based ZnO/TiO2 NCs are synthesized by co-precipitation technique. The development of various diffraction planes (X-rays diffraction analysis) related to TiO2 and ZnO phases confirms the synthesis of polycrystalline polymer-based ZnO/TiO2 NCs. The crystallinity of various phases is associated with increasing ZnO nanofillers. The surface morphology (scanning electron microscopic analysis) comprising of nanoparticles of different shapes is associated with increasing amount of nanofillers. The EDX analysis confirms the presence of Zn, O and Ti in the synthesized polymer-based ZnO/TiO2 NCs. Dielectric measurements demonstrating the sharp increase in dielectric permittivity with relatively low dissipation factor of synthesized polymer-based ZnO/TiO2 NCs are associated with increasing amount of ZnO nanofillers. The static value of dielectric constant (e’) at low frequency (100 Hz) is found to be 14.56 for sample having 10% ZnO nanofillers that is 2.11 times greater than pure PVDF and it shows relatively low value of dissipation factor. The observed σac of synthesized polymer-based ZnO/TiO2 NCs at 3.0×105 Hz and 1.0×106 Hz are ranged from 3.75-9.79 and 15.61-42.72 mS/m respectively. The decreasing complex impedance and increasing electric modulus further confirm that the synthesized polymer-based ZnO/TiO2 NCs flexible sheets are the promising candidate for better capacitive performance showing high strength and flexibility.

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“…At the same time, there are also a small number of literatures showing that the synergistic modification of two nanoparticles can produce unexpected effects. [31,32] Herein, to combine the outstanding functional properties of nano-SiO 2 and nano-ZnO, the high-speed and highpressure nano-disperser invented by our group was used to process these two nanoparticles, and finally a composite nano-dispersion that can be uniformly dispersed without agglomeration was obtained. Due to the nanometer size of the fillers and its good dispersibility, the nano-SiO 2 in the hybrid nanofiller not only improved the mechanical properties of the NRL, but also improved the aging resistance and barrier properties to a certain extent, while the nano-ZnO endowed the NRL with excellent antibacterial properties.…”

Section: Introductionmentioning

confidence: 99%

SiO₂ and ZnO hybrid nanofillers modified natural rubber latex: Excellent mechanical and antibacterial properties

Mou

Fu³

et al. 2022

Polymer Engineering & Sci

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The modification of polymer with nanoparticles has been proved to have good results, but the key of this method is that nanoparticles can maintain uniform dispersion in the polymer. Herein, silica (SiO 2 ) and zinc oxide (ZnO) hybrid nanofillers were prepared by self-made dispersion equipment to modify natural rubber latex (NRL). The results show that the uniformly dispersed nano-SiO 2 fillers increase the number of entanglements in the molecular chain of NRL, thereby improving the tensile properties. The tensile strength and elongation at break of

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Polymer Based ZnO–SiO2 Nanocomposite Flexible Sheets as High Dielectric Materials

Cited by 12 publications

References 40 publications

Thermal and Dielectric Behaviour of Polymer-Based Nanocomposites Flexible Sheets as Highly Stable Dielectric Materials

Thermal and Dielectric Behaviour of Polymer-Based Nanocomposites Flexible Sheets as Highly Stable Dielectric Materials

Synthesis of Polymer-based ZnO/TiO2 NCs Flexible Sheets as High Dielectric Materials

SiO₂ and ZnO hybrid nanofillers modified natural rubber latex: Excellent mechanical and antibacterial properties

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Polymer Based ZnO–SiO2 Nanocomposite Flexible Sheets as High Dielectric Materials

Cited by 12 publications

References 40 publications

Thermal and Dielectric Behaviour of Polymer-Based Nanocomposites Flexible Sheets as Highly Stable Dielectric Materials

Thermal and Dielectric Behaviour of Polymer-Based Nanocomposites Flexible Sheets as Highly Stable Dielectric Materials

Synthesis of Polymer-based ZnO/TiO2 NCs Flexible Sheets as High Dielectric Materials

SiO2 and ZnO hybrid nanofillers modified natural rubber latex: Excellent mechanical and antibacterial properties

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SiO₂ and ZnO hybrid nanofillers modified natural rubber latex: Excellent mechanical and antibacterial properties