Dielectric Properties of Fishbone Kutum and Composite Materials with Its Participation

In this work, were investigated about the investigation of the frequency-dependent change in the character of the dielectric permeability and the tangent of dielectric loss angles of the biocomposites type LDPE + x vol.% FB obtained by fish bone fillers adding to the matrix of low density polyethylene and the bionanocomposites type LDPE + x vol.% FB + 1 vol.% Al with adding to this mixture 1 vol.% aluminum nanoparticles size 50 nm, calculation the actual and imaginary parts of the dielectric permeability of these materials, and the investigation of frequency change of electrical conductivity of both bio and bionanocomposites. It has been established that the dielectric permeability of biocomposites practically does not change in the frequency range 0–103 kHz.

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The dielectric properties and electrical conductivity of LDPE modified by fillers of biological origin

Gojayev

Aliyeva

Khalilova

et al. 2019

Int. J. Mod. Phys. B

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IR absorption spectra of high-pressure polyethylene modified by fish scales

2019

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We study polymeric-based composite materials with nanostructured metal filler and bio-filler; they protect the material from environmental influences, including oxidation, and give the required flexibility to the composite, subject to biocompatibility. Composites were obtained from a homogeneous mixture of the powders of the matrix components and the filler using a heated press at a temperature of 420 K and a pressure of 15 MPa. The quenching crystallization mode is the rapid cooling of samples in a water–ice mixture. The results of a study of IR spectra taken with a Fourier spectrometer Varian 640 FT-IR, high-pressure polyethylene composites modified with biological filler, and LDPE [Formula: see text] vol.% FS [Formula: see text] vol.% Fe bio-nanocomposites in the frequency range 4000–400 cm[Formula: see text] were presented. It was revealed that the introduction of modifiers from fish scales (FS) and metallic nanoparticles (Fe) in LDPE in an optimal amount does not contribute to the appearance of new absorption bands, i.e. it practically does not change the shape of their IR spectrum. This means that the modifier of biological origin is technologically compatible with LDPE. The introduction of fish scale filler to LDPE contributes to a noticeable decrease in the intensity of the formation of C–O groups (1720 cm[Formula: see text]), which is a measure of the oxidative degradation of polymer chains. The results show that the introduction of FS into the structures of high-pressure polyethylene contributes to the formation of an optimal and stable structure, which, in turn, interferes with the intensive development of the photooxidative process caused by UV irradiation.

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The effect of UV irradiation on the dielectric properties of bionanocomposites with fillers of biological origin and metal nanoparticles

et al. 2020

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In this paper, information is given about the investigation of the dielectric properties of bionanocomposites modified with fish bones (FBs) and scales and metal nanoparticles (Al, Fe) with 50–80 nm dimension before and after ultraviolet (UV) irradiation, depending on the temperature, the irradiation time and the volume content of fillers. The investigations of dielectric permittivity and dielectric loss were carried out in the temperature range 300–390 K, the time of irradiation with UV rays were 50, 100, 70 and 150 h, and the filler contents were 3, 5, 7, 10, 15 vol.% and nanoparticles 1 vol.% Al (Fe). It was found that the dielectric constant of UV-irradiated biocomposites with FB additives increases and the dielectric loss decreases. An increase in dielectric constant is also observed with an increase in the volume content of a biological origin filler. Note that the effect of UV irradiation causes the appearance of a new region of dielectric loss in the temperature-dependent tan[Formula: see text] of the polyethylene. However, in modified samples after irradiation, under the same conditions, the change in dielectric properties is much less pronounced than in the initial ones, i.e. the dielectric constant increases monotonically, and the value of tan[Formula: see text] in the maximum of the new loss region is much smaller. Moreover, the effect of the additive is manifested in slowing down the process of LDPE oxidation in the irradiation zone, since the main losses of the polyethylene are primarily caused by the relaxation of the carbonyl groups. Thus, the observed dependences of [Formula: see text] and tan[Formula: see text] on the time of exposure to UV rays are explained by a change in the physical structure of the polymer matrix and the boundary layer of the components composition under the action of charges formed during irradiation.

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Dielectric Properties of Fishbone Kutum and Composite Materials with Its Participation

Cited by 4 publications

References 7 publications

The dielectric properties and electrical conductivity of LDPE modified by fillers of biological origin

The dielectric properties and electrical conductivity of LDPE modified by fillers of biological origin

IR absorption spectra of high-pressure polyethylene modified by fish scales

The effect of UV irradiation on the dielectric properties of bionanocomposites with fillers of biological origin and metal nanoparticles

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