Metal Chelate Monomers Based on Nickel Maleate and Chelating N‐Heterocycles as Precursors of Core‐shell Nanomaterials with Advanced Tribological Properties. Issue 11 (3rd June 2019)

• Record Type: Journal Article
• Authors: Uflyand, Igor E.; Zhinzhilo, Vladimir A.; Mukhanova, Elizaveta A.; Karyukov, Egor V.; Tautieva, Marina A.; Ostapenko, Daria A.; Burlakova, Victoria E.; Dzhardimalieva, Gulzhian I.
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 645:Issue 11(2019)
• Page Start: 758
• Page End: 767
• Publication Date: 2019-06-03
• Subjects: Metal chelate monomer -- Conjugated thermolysis -- Core‐shell nanocomposite -- Nanoparticle -- Nanolubricant; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201900018
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract : 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. Abstract :