Synthesis and Thermal Conversions of Unsaturated Cobalt(II) Monocarboxylates: Precursors for Metal Polymer Nanocomposites |
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| Authors: | A. S. Pronin S. A. Semenov D. V. Drobot G. I. Dzhardimalieva |
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| Affiliation: | 1.MIREA—Russian Technological University (Lomonosov Institute of Fine Chemical Technologies),Moscow,Russia;2.Institute of Problems of Chemical Physics,Russian Academy of Sciences,Chernogolovka, Moscow oblast,Russia |
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| Abstract: | Cobalt(II) salts of unsaturated monocarboxylic acids (acrylic acid, methacrylic acid, sorbic acid, 4-pentynoic acid, crotonic acid, linoleic acid, and oleic acid) are prepared. The prepared compounds are characterized by elemental analysis, IR spectroscopy, thermogravimetry, and differential scanning calorimetry. Cobalt-containing nanocomposites are produced by the thermal decomposition of the prepared carboxylates and characterized by elemental analysis, IR spectroscopy, scanning and transmission electron microscopy, energy dispersive X-ray spectroscopy, and X-ray powder diffraction. The enthalpies of reaction (ΔHr°) for the formation of cobalt(II) salts of unsaturated monocarboxylic acids are calculated by the PM3 semiempirical quantum-chemical method. A correlation is found between the mean diameter (dmean) of nanoparticles in nanocomposites and ΔHr°. |
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