Magnetic Nanocomposites Based on the Metal‐Containing (Fe, Co, Ni) Nanoparticles inside the Polyethylene Matrix

Yurkov, G. Yu.; Губин, С. П.; Ovchenkov, E. A.

doi:10.1002/9783527627561.ch4

Cited by 8 publications

(5 citation statements)

References 14 publications

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“…Ceramic materials incorporating α-Fe2O3 nanocrystals were also obtained by thermolysis of hyperbranched poly(ferrocenylenesilane) [457]. The synthesis and self-organization of the polymer-coated ferromagnetic cobalt, nickel and iron nanoparticles have been analyzed in considerable detail [458,459]. For example, the corresponding composite is obtained by thermolysis of Co 2 (CO) 8 in dichlorobenzene in the presence of polymeric surfactants with terminal functional groups (Mw ¼ 5-10 kDa) at temperatures of 433-453 K [460, 461].…”

Section: Metal Thiolates and Sulfides In The Polymer Matrixmentioning

confidence: 99%

Nanostructured Materials Preparation via Condensation Ways

Pomogailo

Джардималиева

2014

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Section: Metal Thiolates and Sulfides In The Polymer Matrixmentioning

confidence: 99%

Nanostructured Materials Preparation via Condensation Ways

Pomogailo

Джардималиева

2014

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“…are going to be measured. The dielectric constant ε and the tangent of the dielectric loss angle tanδ of polymeric composite materials were studied [ 104 , 146 , 151 , 164 , 165 , 166 , 167 , 168 ].…”

Section: Electrical and Magnetic Properties Of Composite Materialsmentioning

confidence: 99%

“…This method was used to study the concentration dependences of composite materials based on Fe -, Bi -, and Mo -containing nanoparticles as well as NiFe 2 O 4 nanoparticles in a HPPE matrix [ 165 ]. The results of measurements of ε and tanh( δ ) for samples with Fe , Bi , Mo , and NiFe 2 O 4 nanoparticles in a HPPE matrix are presented in Figure 19 .…”

Section: Electrical and Magnetic Properties Of Composite Materialsmentioning

confidence: 99%

Radio-Absorbing Materials Based on Polymer Composites and Their Application to Solving the Problems of Electromagnetic Compatibility

et al. 2022

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Recently, designers of electronic equipment have paid special attention to the issue of electromagnetic compatibility (EMC) of devices with their own components and assemblies. This is due to the high sensitivity of semiconductor microcircuits to electromagnetic interference. This interference can be caused either by natural phenomena, such as lightning strikes, or by technical processes, such as transients in circuits during fast periodic or random switching. Either way, interference implies a sudden change in voltage or current in a circuit, which is undesirable, whether it propagates along a cable or is transmitted as an electromagnetic wave. The purpose of this article is to review the works devoted to the development, creation, and investigation of modern polymeric nanocomposite materials used for shielding electromagnetic radiation and their effective application for solving problems of electromagnetic compatibility. Additionally, the approach to design EMI shielding complex media with predetermined parameters based on investigation of various properties of possible components is shown. In the review, all polymer composites are classified according to the type of filler. The issues of the interaction of a polymer with conductive fillers, the influence of the concentration of fillers and their location inside the matrix, and the structure of the nanocomposite on the mechanisms of electromagnetic interaction are considered. Particular attention is paid to a new generation of nanocomposite materials with widely adjustable electrical and magnetic properties. A wide class of modern filled polymeric materials with dielectric and magneto-dielectric losses is considered. These materials make it possible to create effective absorbers of electromagnetic waves that provide a low level of reflection coefficient in the microwave range. The model mechanisms for shielding electromagnetic radiation are considered in the paper. A detailed review of the electro-physical properties of polymer nanocomposites is provided. Multilayer electrodynamic media containing combinations of layers of filled polymer composite materials with nanoparticles of different compositions and manufactured using a single technology will make it possible to create electrodynamic media and coatings with the required electro-physical characteristics of absorption, transmission, and reflection. Within the framework of the two-layer coating model, the difference in the effects of the interaction of electromagnetic radiation with conductive layers located on a dielectric and metal substrate is demonstrated. It is shown that in order to achieve optimal (maximum) values of reflection and absorption of electromagnetic radiation in the appropriate frequency range, it is necessary to fit the appropriate layer thicknesses, specific conductivity, and permittivity. Such approach allows designers to create new shielding materials that can effectively vary the shielding, absorbing, and matching characteristics of coatings over a wide frequency band. In general, it can be said that the development of innovative polymer composite materials for shielding electronic devices from electromagnetic interference and excessive electromagnetic background is still an important task. Its solution will ensure the safe and uninterrupted operation of modern digital electronics and can be used for other applications.

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“…Deposition of the polymer on the surface of magnetite nanoparticles provides its chemical and thermal stability [ 16 , 28 , 29 ]. In addition, in the case of nanoparticles coated with polymers, a smaller tendency to their aggregation is observed, which significantly increases their usability [ 30 , 31 ]. Furthermore, most polymers, and in particular biopolymers, have in their structure reactive amino, carboxyl, and hydroxyl groups, which can be successfully used in the immobilization of proteins [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, in the case of nanoparticles coated with polymers, a smaller tendency to their aggregation is observed, which significantly increases their usability [ 30 , 31 ]. Furthermore, most polymers, and in particular biopolymers, have in their structure reactive amino, carboxyl, and hydroxyl groups, which can be successfully used in the immobilization of proteins [ 30 ]. Therefore, in recent years, there has been a growing interest in the synthesis of magnetite nanoparticles coated with macromolecules and their subsequent application for the immobilization of bioligands [ 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Polymer-Coated Magnetite Nanoparticles for Protein Immobilization

et al. 2021

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Since their discovery, magnetic nanoparticles (MNPs) have become materials with great potential, especially considering the applications of biomedical sciences. A series of works on the preparation, characterization, and application of MNPs has shown that the biological activity of such materials depends on their size, shape, core, and shell nature. Some of the most commonly used MNPs are those based on a magnetite core. On the other hand, synthetic biopolymers are used as a protective surface coating for these nanoparticles. This review describes the advances in the field of polymer-coated MNPs for protein immobilization over the past decade. General methods of MNP preparation and protein immobilization are presented. The most extensive section of this article discusses the latest work on the use of polymer-coated MNPs for the physical and chemical immobilization of three types of proteins: enzymes, antibodies, and serum proteins. Where possible, the effectiveness of the immobilization and the activity and use of the immobilized protein are reported. Finally, the information available in the peer-reviewed literature and the application perspectives for the MNP-immobilized protein systems are summarized as well.

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Magnetic Nanocomposites Based on the Metal‐Containing (Fe, Co, Ni) Nanoparticles inside the Polyethylene Matrix

Cited by 8 publications

References 14 publications

Nanostructured Materials Preparation via Condensation Ways

Nanostructured Materials Preparation via Condensation Ways

Radio-Absorbing Materials Based on Polymer Composites and Their Application to Solving the Problems of Electromagnetic Compatibility

Polymer-Coated Magnetite Nanoparticles for Protein Immobilization

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