Radchenko O. Synthesis and properties of cyclodextrin-containing oligomers and polymers and their impact on processes of environmental pollutants photocatalytic degradation

The thesis is devoted to the creation of new beta-cyclodextrin derivatives, соpolymers based on them and surface modification of photocatalyst - titanium dioxide. The main direction of the synthesized compounds application is their use as additives in photocatalytic water purification process of organic pollutants. Main results were obtained with use of research methods: IR-, NMR-, UV-spectroscopy, X-ray analysis, mass spectrometry, differential scanning calorimetry, thermogravimetric analysis. It was verified effective influence of obtained compounds on the photodegradation of various dyes and bisphenol A. It has been studied sorption properties of the modified TiO2 and copolymers based on beta-cyclodextrin. It was shown that beta-cyclodextrin derivatives and соpolymers based on them accelerate organic substances photodestruction in 2,5- 4 times. It was established that the obtained copolymers can be repurposed for degradation of dyes. The samples of modified TiO2 were synthesized by grafting silicon derivatives on it's surface. Than, copolymerization of obtained compound with methacrylate monomers as well as functionalized beta-cyclodextrin was realized. It was established that the photocatalyst surface modification eliminates the disadvantage of removing spent additives from water and increases its photocatalytic activity. The results indicate that the synthesized compounds are promising for their using in the water purification from organic environmental pollutants.