Kozak N. Polyurethane systems of various topology formed in the presence of coordination metal compounds

The object of the research is investigation of intermolecular interactions "polymer - coordination metal compound", structure, dynamics and properties of polyurethane systems of various topology (linear, cross-linked, semi-interpenetrating polymer networks) with immobilized in situ coordination centers of 3d4, 3d5, 3d6, 3d8, 3d9, 3d10, 4d10 and 4f metals as well as heteropolynuclear complexes of transition metals. The main results were obtained by the method of electron spin resonance using system of paramagnetic probes of various nature, electron- and infrared spectroscopy, quasi-elastic neutron scattering, dielectric relaxation analysis, X-ray and fluorescent analysis, optical and SEM microscopy, differential scanning calorimetry, thermogravimetric analysis, It was shown, that complex formation between metal compound and functional groups of the forming polymer, causing the appearance of additional spatial network, has a decisive influence on the polyurethane structuring and properties. The evidence of existence of such additional coordination bonds network in metal-contained polyurethanes was obtained experimentally. The presence of additional short-ordering levels was revealed in metal containing organic matrix. The dependence was shown of relaxation, surface, thermomechanical, luminescent, dynamic properties and thermal ageing modified polyurethanes on peculiarities of the polymer structuring in the presence of coordination centres of various symmetry as well as on additional complexing agents introduced in reaction mixture. The influence was revealed of covalent binding of metal coordination centre with macrochain on in situ structuring and properties of metal contained polyurethane systems.