Search academic texts

Information × Registration Number 0226U002567, (0125U002258) , R & D reports Title Kinetic properties of matter in the nano- nonhomogeneous matrix molecular systems with medical and environmental applications. popup.stage_title Дослідження впливу зовнішніх факторів на кінетичні властивості речовин в нанонеоднорідних матричних молекулярних системах Head Lazarenko Maksym M., Доктор фізико-математичних наук Registration Date 27-02-2026 Organization Taras Shevchenko National University of Kyiv popup.description1 Investigate the effects of the surface interfaces of the components of nano- nonhomogeneous molecular systems on these systems’ properties, such as their dielectric and thermal relaxation, mass transfer and diffusion processes. popup.description2 In the proposed project, thermodynamic model will be created, which will allow, based on the dependence of the parameters of the relaxation process on the size of nanoinclusions, to obtain microscopic characteristics: the size of the relaxor activation region, the probability of atom excitation per unit time, and the concentration of excited atoms. Establishing the influence of the interaction of nanoinclusions with the surface of matrices on the mechanisms of phase transitions and relaxation processes in them is important for the development of pharmacological agents, improving the barriers to protect radioactive waste storage facilities, as well as for use in systems that accumulate thermal energy. The aim of the project is to study the influence of the interface of components in nanoinhomogeneous molecular systems on their kinetic properties, in particular on the processes of dielectric and thermal relaxation and mass transfer and diffusion processes in them. The objectives of the research are as follows: to create nanoporous systems with different chemical surface structures and pore sizes and fill them with nanoinclusions; to conduct experimental studies of thermophysical, spectral and dielectric characteristics of systems with nanoinclusions of various sizes in a wide temperature range; to analyze and generalize the obtained regularities of the influence of the pore size and chemical structure of the surface of porous matrices on the parameters of phase transitions and relaxation processes in nanoinclusions; to create a theoretical model that will make it possible, based on experimental data, to determine the dependence of the parameters of relaxation processes on the size of nanoinclusions and the chemical structure of the pore surface and to obtain microscopic characteristics of relaxants; to create matrix systems based on hydrogel and nanoporous solid sorbents; to create effective method for studying diffusion and sorption processes in combined hydrogels. Product Description popup.authors Dmytro A. Andrusenko Kateryna S. Yablochkova Oleksandr M. Alieksieiev Vitalii Y. Bardyk Serhii O. Aleksieiev Kateryna I. Hnatyuk Mariia О. Sosnovska Dmytro K. Honcharuk popup.nrat_date 2026-02-27 Close