Reactivity of metal-containing monomers

Rosenberg, A. S.; Aleksandrova, E. I.; Ivleva, Natalia P.; Джардималиева, Г. И.; Raevskii, A. V.; Kolesova, O. I.; Uflyand, Igor Е.; Pomogaĭlo, A. D.

doi:10.1007/bf02498945

Cited by 16 publications

(8 citation statements)

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“…Thermal transformations go through three main macrostages with different temperatures [67][68][69][70][71][72][73][74][75]: (1) Initial monomer dehydration (desolvation) at 303-473 K; (2) the stage of solid-state homo-and copolymerization of the dehydrated monomer (at 473-573 K); (3) the produced polymer decarboxylation to a metal-containing phase and oxygen-free polymer matrix at T ex > 523 K with an intense gas emission. The analysis of the thermal transformation of the gaseous products and the composition of the solid product (decarboxylated polymer, including metal or its oxide) allows determining a general scheme of metal acrylate thermal transformations:…”

Section: Magnetic Metal Nanoparticles In Stabilizing the Polymer Matrmentioning

confidence: 99%

“…The thermal transformations of a series of unsaturated metal carboxylates [67][68][69][70][71][72][73][74][75] 6 · 3H 2 O maleates) and acrylamide complexes of metal nitrates (CoAAm, FeAAm) have been studied. Thermolysis of monomers under study is accompanied by the gas evolution and the mass loss due to the dehydration followed by thermal transformation of dehydrated specimens.…”

Section: The Kinetics Of Thermolysis Of Metal-containing Monomersmentioning

confidence: 99%

“…This is confirmed by the results of IR-and mass-spectroscopic studies. According to the data of TA [73][74][75][76][77][78]83], representative temperatures (T polym ) at which polymerization proceeds are as follows: ∼543 K (CoAcr 2 ), ∼563 K (NiAcr 2 ), ∼510 K (CuAcr 2 ), ∼518 K (FeAcr 3 ), 488-518 K (CoMal), ∼518 K (FeMal), 364 K (CoAAm). The EXAFS study of the solid-phase product at the initial stage of thermolysis (t term = 5 min at 643 K) also indicates the rearrangement of ligand environment of FeMal during its dehydration and polymerization [74,75].…”

Section: Polymerizationmentioning

confidence: 99%

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Magnetic Metallopolymer Nanocomposites: Preparation and Properties

Джардималиева

Pomogailo

Rozenberg

et al. 2009

Magnetic Nanoparticles

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IntroductionThe various physical and mechanical parameters of metallopolymeric nanocomposites can be considerably improved with retention or sometimes even with the increase in the conventional magnetic characteristics (saturation magnetization, coercive force, etc.) that show considerable promise for various applications. Such substances are very perspective as high-density information media, materials for permanent magnets, magnetic cooling systems, or fabrication of magnetic sensors. They can also be used for medical and biological applications, e.g., for magnetic resonance tomography, magnetic targeted drug delivery systems, magnetic resonance imaging (MRI) contrast enhancement, color imaging, and cell sorting [1,2].Ferromagnetic metal particles can be formed in a polymer matrix (ferroplastics or ferroelastics) by practically all methods for synthesis of metal nanoparticles in polymers. The manufacturing method can be subdivided into three large groups: physical, chemical, and physicochemical. The division is very conventional and is based mostly on the method of nanoparticle formation and the character of their interactions with the matrix. The first group of methods includes the procedures seemingly devoid of any chemical interactions between the dispersed phase and the dispersion medium. Composites of this type are rare. More popular chemical methods of manufacturing nanocomposites are based on interactions between components anticipated or detected. The reduction reactions and precursors are well known. Nevertheless, the new approaches have been elaborated from practical demands and many details of the chemical reduction are still unclear. The third group of methods are those when metal or their oxide nanoparticles are formed using high-energy processes of atomic metal evaporation, including low-temperature discharge plasma, radiolysis, and photolysis in the presence of monomer and polymer. Recently, such methods have become widely used in vacuum metallization Magnetic Nanoparticles. Sergey P. Gubin

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Section: Magnetic Metal Nanoparticles In Stabilizing the Polymer Matrmentioning

confidence: 99%

Section: The Kinetics Of Thermolysis Of Metal-containing Monomersmentioning

confidence: 99%

Section: Polymerizationmentioning

confidence: 99%

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Magnetic Metallopolymer Nanocomposites: Preparation and Properties

Джардималиева

Pomogailo

Rozenberg

et al. 2009

Magnetic Nanoparticles

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“…The appearance of new sharp bands in the IR spectra of the Fe 2 NiAcr 9 cocrystallite is interpreted as a formation of a co-crystallite with a perfect crystal structure. Some common features of thermal behavior of the monomers being studied can be presented as follows [37][38][39][40][41][42][43][44][45].…”

Section: The Peculiarities Of Thermolysis Of Metal-containing Monomersmentioning

confidence: 99%

Controlled Pyrolysis of Metal‐Containing Precursors as a Way for Synthesis of Metallopolymer Nanocomposites

Pomogailo

Rozenberg

Джардималиева

2004

Metal–Polymer Nanocomposites

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The processes of thermal decomposition play an important role in various practical fields including metallurgy, mineral conversion processes, pyrogenic chemical technology, pyrolysis and thermal treatment of wood and coal, combustion of natural and synthetical fuels, coal carbonization, the prevention of grain spontaneous ignition, and so on. There is still a need for scientifically well-founded approaches to control the thermal decomposition of materials. Many studies focus attention on the chemical transformations and reactions in the pyrolized systems and on the creation of mathematical models of such processes as the major parts of the theory of chemical decomposition of complex substances.Thermolysis is widely used in the synthesis of nano-sized metallopolymer composites. This is a result of the specifics of the preparation of such materials. In spite of a variety of the methods for the preparation of metallopolymer nanocomposites, there are two principal routes: "bottom-up" and "top-down."

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“…Finally, conjugated thermolysis of MCMs, including simultaneous thermal polymerization of the monomer and thermolysis of the resulting metal‐containing polymer, allows the production of advanced nanomaterials. The most extensive studies of conjugated thermolysis of MCMs were carried out using various unsaturated carboxylates of metals, in particular maleates (Mal) of transition metals . It should be specially emphasized that the thermolysis of such MCMs results in nanoparticles (NPs) of metals, metal oxides or carbides with smaller size than those obtained by thermolysis of saturated carboxylates, and these NPs are stabilized by the polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Metal Chelate Monomers Based on Nickel Maleate and Chelating N‐Heterocycles as Precursors of Core‐shell Nanomaterials with Advanced Tribological Properties

Uflyand

Zhinzhilo

Mukhanova

et al. 2019

Zeitschrift anorg allge chemie

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In this study, new metal chelate monomers based on nickel(II) maleate and chelating N‐heterocycles (2,2′‐bipyridine and 1,10‐phenanthroline) were synthesized and characterized. A detailed analysis of the main stages and features of the kinetics of thermal transformations of metal chelate monomers was carried out. Core‐shell nanomaterials containing nanoparticles of nickel oxide and metallic nickel in a stabilizing nitrogen‐containing polymer matrix were obtained by thermolysis of these monomers. The composition, properties and structure of the nanomaterials were studied using IR spectroscopy, thermal analysis, X‐ray diffraction, atomic force microscopy, scanning electron microscopy, high‐resolution transmission electron microscopy, and energy dispersive X‐ray spectroscopy. The tribological characteristics of NiO nanoparticles as lubricant additives were studied using a pin‐on‐disc tribometer. The coefficient of friction (COF) is the lowest at the optimum concentration of nanoparticles and increasing the concentration above the optimum level leads to an increase in COF.

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Reactivity of metal-containing monomers

Cited by 16 publications

References 1 publication

Magnetic Metallopolymer Nanocomposites: Preparation and Properties

Magnetic Metallopolymer Nanocomposites: Preparation and Properties

Controlled Pyrolysis of Metal‐Containing Precursors as a Way for Synthesis of Metallopolymer Nanocomposites

Metal Chelate Monomers Based on Nickel Maleate and Chelating N‐Heterocycles as Precursors of Core‐shell Nanomaterials with Advanced Tribological Properties

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