Polymer nanocomposites comprising PMMA matrix and ZnO, SnO2, and TiO2 nanofillers: A comparative study of structural, optical, and dielectric properties for multifunctional technological applications

Sengwa, R. J.; Dhatarwal, Priyanka

doi:10.1016/j.optmat.2021.110837

Cited by 95 publications

(64 citation statements)

References 77 publications

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“…Analysis of the absorbance and PL spectra is shown in Figure . 3. The broad absorption peak at a wavelength of 377 nm in the two composite film samples is the absorption peak of PMMA [26]. While the absorption peak of blue PQD composite film nanoparticles without fumed silica is at a wavelength of 436 nm.…”

Section: Resultsmentioning

confidence: 88%

Influence of fumed silica and PMMA on optical properties of blue-emitting CH₃NH₃PbBr₃ perovskite nanocrystals

Ummah¹,

Mahen²,

Nuryadin³

2022

J. Phys.: Conf. Ser.

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Fabricating highly efficient and great optical properties of blue organic-inorganic halide perovskite (OIHP) has proven difficult and continues to be a source of significant interest. Herein, we successfully synthesized blue-emitting CH3NH3PbBr3 perovskite using a ligand assisted reprecipitation process, followed by embedding in fumed silica and poly-methylmethacrylate (PMMA) matrix. By adding fumed silica, the photoluminescence (PL) peak spectrum of CH3NH3PbBr3 was blue-shifted from 481 to 477 nm. Furthermore, OIHP also exhibited a blue shift from 477 nm to 471 nm after being embedded in the PMMA matrix. On the other hand, the OIHP absorbance spectrum shifted from 451 nm to 426 nm, which correlates to the blueshift in the PL peak spectrum. The emergence of two peaks in the absorbance spectrum indicates that nanoparticles with small size distribution have grown on the OIHP. This phenomenon demonstrates that the OIHP has a strong quantum confinement effect. Therefore, the results demonstrated that CH3NH3PbBr3/SiO2/PMMA composite films have great optical properties, which is promising for their uses in potential optoelectronic applications.

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Section: Resultsmentioning

confidence: 88%

Influence of fumed silica and PMMA on optical properties of blue-emitting CH₃NH₃PbBr₃ perovskite nanocrystals

Ummah¹,

Mahen²,

Nuryadin³

2022

J. Phys.: Conf. Ser.

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“…Dielectric properties of hybrid PMMA/RGO/Fe 2 O 3 nanocomposites fabricated by in situ polymerization increased the dielectric constant of PMMA [ 15 ]. The complex dielectric permittivities of polymer nanocomposites comprising a PMMA matrix and ZnO, SnO 2 , and TiO 2 nanofillers (20 Hz to 1 MHz) were investigated by Sengwa and Dhatarwal [ 16 ]. They reported that the complex dielectric permittivities increased with the increase in the SnO 2 and ZnO concentrations, whereas TiO 2 loading lowered the permittivities as compared to the host PMMA matrix film.…”

Section: Introductionmentioning

confidence: 99%

Impact of Charge Transfer Complex on the Dielectric Relaxation Processes in Poly(methyl methacrylate) Polymer

et al. 2022

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The impact of the charge transfer complex on the dielectric relaxation processes in free poly(methyl methacrylate) (PMMA) polymer sheets was investigated. The frequency dependence of dielectric properties was obtained over the frequency range 0.1 Hz–1 MHz at temperatures ranging between 303 K and 373 K for perylene dye and acceptors (picric acid (PA) and chloranilic acid (CLA)) in an in situ PMMA polymer. The TG/dTG technique was used to investigate the thermal degradation of the synthesized polymeric sheets. Additionally, the kinetic parameters have been assessed using the Coats–Redfern relation. The dielectric relaxation spectroscopy of the synthesized polymeric sheets was analyzed in terms of complex dielectric constant, dielectric loss, electrical modulus, electrical conductivity, and Cole–Cole impedance spectroscopy. α- and β-relaxation processes were detected and discussed. The σ(ω) dispersion curves of the synthesized polymeric sheets show two distinct regions with increasing frequency. The impedance data of the synthesized polymeric sheets can be represented by the equivalent circuit (parallel RC).

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“…[34] Zinc-oxide (ZnO), due to its wide bandgap, is one such metal oxide, which finds its application as a nanofiller in various polymeric matrices to produce highly functional and flexible optoelectronics devices. [35] Being environment friendly, ZnO nanoparticles are also compatible with various polymeric matrices and hence find applicability in the preparation of highly functional polymer composites. Baghdadi et al reported that the addition of 2.5 wt% of ZnO to epoxy resulted in approximately 24% increase in the tensile strength of the epoxy resin and similarly the fracture toughness of the epoxy resin increased by 2.39%.…”

Section: Introductionmentioning

confidence: 99%

Hybridization effect on the mechanical properties of basalt fiber reinforced ZnO modified epoxy composites

et al. 2022

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This paper discusses the fabrication of nano ZnO filled epoxy/basalt fiber composites and investigates the effect of such hybridization on the mechanical properties of the composites. The epoxy resin is modified by the addition of ZnO nanofiller in different wt.% (1-5 wt%). The dispersion of the nanofiller within the epoxy resin is brought about by sonication technique. The composites are fabricated through wet layup followed by curing under compression molding. To ascertain the effect of resin modification, flexural and tensile strengths are evaluated. The inter-laminar shear strength (ILSS) is determined to identify the compatibility of the ZnO nanofiller with the epoxy and the basalt fibers. The improvement in the ILSS indicates thorough wettability being achieved between all the composite components. The addition of ZnO nanofiller improved the flexural strength, while there was no remarkable improvement in the tensile strength of the ZnO modified epoxy/baslat (BEZ) composite. Maximum improvement in the strengths is observed for BEZ2 composite with 2 wt% of ZnO nanofiller. For BEZ2 composite, the flexural and tensile strength increased by about 22% and 9.78% respectively in comparison to unfilled BEZ0 composite. The ILSS for BEZ2 composite improved by 21.74% in comparison to BEZ0 composite. In addition, more than 2 wt% addition of the ZnO nanofiller resulted in the reduction of flexural, tensile and ILSS of the composite due to agglomeration. Such agglomeration resulted in the failure of the composite due to delamination, matrix cracking and fiber fracture as observed through scanning electron microscopy images of the fractured composites.

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Polymer nanocomposites comprising PMMA matrix and ZnO, SnO2, and TiO2 nanofillers: A comparative study of structural, optical, and dielectric properties for multifunctional technological applications

Cited by 95 publications

References 77 publications

Influence of fumed silica and PMMA on optical properties of blue-emitting CH₃NH₃PbBr₃ perovskite nanocrystals

Influence of fumed silica and PMMA on optical properties of blue-emitting CH₃NH₃PbBr₃ perovskite nanocrystals

Impact of Charge Transfer Complex on the Dielectric Relaxation Processes in Poly(methyl methacrylate) Polymer

Hybridization effect on the mechanical properties of basalt fiber reinforced ZnO modified epoxy composites

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Polymer nanocomposites comprising PMMA matrix and ZnO, SnO2, and TiO2 nanofillers: A comparative study of structural, optical, and dielectric properties for multifunctional technological applications

Cited by 95 publications

References 77 publications

Influence of fumed silica and PMMA on optical properties of blue-emitting CH3NH3PbBr3 perovskite nanocrystals

Influence of fumed silica and PMMA on optical properties of blue-emitting CH3NH3PbBr3 perovskite nanocrystals

Impact of Charge Transfer Complex on the Dielectric Relaxation Processes in Poly(methyl methacrylate) Polymer

Hybridization effect on the mechanical properties of basalt fiber reinforced ZnO modified epoxy composites

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Influence of fumed silica and PMMA on optical properties of blue-emitting CH₃NH₃PbBr₃ perovskite nanocrystals

Influence of fumed silica and PMMA on optical properties of blue-emitting CH₃NH₃PbBr₃ perovskite nanocrystals