Tsebrienko T. Synthesis, structure and properties of interpenetrating polymer networks containing poly(titanium oxide) obtained by sol-gel method

The thesis is devoted to the development of the method of synthesis, as well as the investigation of the properties of organo-inorganic interpenetrating polymer networks (OI IPNs) based on cross-linked polyurethane, poly(hydroxyethyl methacrylate) and poly(titanium oxide) obtained by sol-gel method in the different media (poly(propylene glycol) (PPG) and 2-hydroxyethyl methacrylate (HEMA)). The influence of poly(titanium oxide) depending on its content and method of its preparation on the kinetic parameters of the formation of IPNs components, the microphase structure, viscoelastic, thermal and optical properties were investigated. The main results of the thesis were obtained by such research techniques as differential calorimetry, IR-, NMR spectroscopy, pyrolysis mass spectrometry, liquid chromatography, dynamic mechanical analysis, thermogravimetric analysis, light transmission, and others. The effect of the medium of poly(titanium oxide) formation on the kinetics of IPNs formation as well as its structure and properties was found. The influence of poly(titanium oxide) obtained in the medium of PPG on the phase compatibility of the components of IPNs was established. Also, the wide temperature range of the relaxation transition at the certain content of poly(titanium oxide) was observed, which makes it possible to use such materials as polymeric dampers. It was shown that the formation of active centers under UV-irradiation took place for the samples containing poly(titanium oxide) synthesized in HEMA medium which allows to realize photocatalytic processes on the surface of such materials and apply them in the sphere of photonics for recording of information under the laser irradiation.