Structural organization and thermal transformations of various Ni(II) complexes as precursors of polymer-metal nanocomposites

Abstract

Peculiarities of thermal transformations of metal-containing monomers and polymers prepared by various synthetic routes are analyzed. It is shown that the thermal stability of metalcarboxylate groups is determined by the spatial organization of the nearest environment and the microstructure of polymer chains formed as a result of thermal transformations. Main paths of thermal transformations of studied compounds are considered. Qualitative and quantitative compositions of the gaseous and solid-phase products at the end of transformations and some properties of forming polymer-metal nanocomposites are studied. 1 60th communication from "Preparation and Reactivity of MetalContaining Monomers" series. For 59th communication see [1].

Controlled Thermolysis of Macromolecule‐Metal Complexes as a Way for Synthesis of Nanocomposites

“…For example, upon the thermolysis of Co(II) acrylate, the fraction of CoO in the core is as large as 85%; in the thermolysis of Ni(II) acrylate (wt %): Ni0, ≈ 43; NiO, ≈ 35; and Ni 3 C ≈ 22; while, in the case of the thermolysis of its polymer, Ni 0 ≈ 75 and NiO, ≈ 25. For comparison, let us present the composition of the thermolysis products of Ni(II) polyacrylate, which was prepared via the interaction between polyacrylic acid and Ni(II) acetate, subjected to the thermolysis under the same conditions:10 Ni ≈ 84 wt % and NiC ≈ 16 wt %.…”

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

“…The presented work is devoted to the study of the effect of bifunctional N‐heterocycles complexed with nickel(II) maleate on the kinetic parameters of thermal transformations, the composition, properties and structure of NPs synthesized under various thermolysis conditions, and tribological characteristics of the obtained nanocomposites as lubricating additives. This paper is a continuation of our studies on thermal transformations of unsaturated nickel(II) carboxylates and the properties of the resulting nanocomposites , , , …”

Conjugated Thermolysis of Metal Chelate Monomers Based on Cobalt Acrylate Complexes with Polypyridyl Ligands and Tribological Performance of Nanomaterials Obtained

“…The undoubted advantage of MCMs is the ability of one‐step preparation of polymeric metal chelates in which each chelating moiety contains a metal ion in a predetermined spatial configuration ,. The most extensive studies of MCM conjugated thermolysis were carried out using various unsaturated metal carboxylates, for example, acrylates NiAcr 2 and ScAcr 4 , derivatives of Hf(IV) (meth) acrylate and fumarate, etc. One of the promising directions of the MCM study is the synthesis of MCMs based on mixed ligands, including unsaturated carboxylic acid and nitrogen‐containing ligands: phen, bpy, 4,4′‐bipyridine, benzimidazole derivatives, 4,4′‐dipyridylamine and others.…”