Amorphous Silica Np-Embedded-Polymer Nanocomposites with Enhanced Optical and Dielectric Properties

Ramazanov, M. A.; Jafarov, M. A.; Shirinova, H. A.; Karimova, Aynura; Huseynzade, N.A.

doi:10.1080/10584587.2020.1803671

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…Solution blending and hot pressing method were used for preparation of the polymer nanocomposites. 14,15…”

Section: Methodsmentioning

confidence: 99%

“…All chemicals were used without additional purification: Isotactic PP (PP grade Moplen HF500N, homopolymer): density-0.92 g/cm 3 Solution blending and hot pressing method were used for preparation of the polymer nanocomposites. 14,15 Characterization X-ray diffraction (XRD) analysis of the prepared samples was carried out on a Rigaku Mini Flex 600 XRD diffractometer at room temperature. In all the cases, CuK(a) radiation from a Cu X-ray tube (run at 15 mA and 30 kV) was used.…”

Section: Experimental Section Materialsmentioning

confidence: 99%

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Structure and optic properties of the nanocomposites based on polypropylene and amorphous silica nanoparticles

Ramazanov

Shirinova

Nuriyeva

et al. 2021

Journal of Thermoplastic Composite Materials

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The structure and optic properties of the transparent PP+SiO2 nanocomposites with a relatively high refractive index and enhanced luminescence properties were investigated. X-ray analysis, Fourier-transform infrared (FTIR), Visible-ultraviolet, and photoluminescence spectroscopic methods were used for investigation. The XRD analysis indicated that the fraction of the amorphous phase of the polycrystalline polymer decreases with the introduction of SiO2 nanoparticles. Even though SiO2 nanoparticle is amorphous itself, they play the role of the crystallinity centers in the polymer matrix, and the degree of crystallinity increases in polymer nanocomposites. According to UV-vis spectroscopic analysis that, with the increasing of the concentration of SiO2 nanoparticles distributed in the polymer matrix, the absorption intensity of the samples also increases. It was explained by the hyperchromic effect which is related to raising the optical density of the polymer by introducing the filler particles (SiO2). It was calculated bandgap energy and refractive index on the base of the UV spectra of samples. It has been found that at low concentrations of amorphous silica nanoparticles, the polymer nanocomposite retains its transparency despite having a relatively high refractive index (1.96). Furthermore, the photoluminescence (PL) spectrum of nanocomposites was investigated depending on filler concentration. It was clear that the intensity of the PL spectrums increases with the increase of the filler concentration that is explained by the raising of the luminescence centers in the nanocomposite material. These luminescence centers are oxygen-deficit centers in the spatial structure of the amorphous silica nanoparticles.

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“…Solution blending and hot pressing method were used for preparation of the polymer nanocomposites. 14,15…”

Section: Methodsmentioning

confidence: 99%

Section: Experimental Section Materialsmentioning

confidence: 99%

Structure and optic properties of the nanocomposites based on polypropylene and amorphous silica nanoparticles

Ramazanov

Shirinova

Nuriyeva

et al. 2021

Journal of Thermoplastic Composite Materials

View full text Add to dashboard Cite

show abstract

Enhancement of the PL Intensity of Silica Based Polymer Electret after Electro-Thermo-Polarization

Рамазанов

Shirinova

Huseynzade

et al. 2021

Integrated Ferroelectrics

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Amorphous Silica Np-Embedded-Polymer Nanocomposites with Enhanced Optical and Dielectric Properties

Cited by 2 publications

References 13 publications

Structure and optic properties of the nanocomposites based on polypropylene and amorphous silica nanoparticles

Structure and optic properties of the nanocomposites based on polypropylene and amorphous silica nanoparticles

Enhancement of the PL Intensity of Silica Based Polymer Electret after Electro-Thermo-Polarization

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