Liashuk T. Influence of morphological heterogeneity on relaxation and thermophysical properties of nanofilled polyvinyl chloride

Object of research: effect of morphological heterogeneity and external fields of different physical nature on electro- and thermophysical properties of polymer systems. The purpose of the study: to study the effect of morphological heterogeneity of heterogeneous polymer systems based on polyvinyl chloride on the complex properties of the composite; obtaining new metal-dispersed fillers; development and description of material models taking into account the sources of its heterogeneity; elucidation of the behavior of heterogeneous polymer systems in electric and temperature fields. Research methods and equipment: volume dilatometry, dielectric and infrared spectroscopy, volt-ampere characteristic method, differential thermal and thermogravimetric analysis, radiography. A new type of polymeric metal nanocomposites based on polyvinyl chloride was obtained using the method of electric explosion of the conductor and electrochemical method. The behavior of such materials in external temperature and electric fields was studied. Model approaches were proposed to model the behavior of nanocomposites based on amorphous polymers under the action of fields of different physical nature. For the first time it was carried out a systematic study of the morphological heterogeneity of the structure of composite materials based on flexible-chain amorphous polymers and it was shown its influence on the relaxation and thermophysical properties of such materials under conditions of external fields of different physical nature and intensity. Analytical relations were obtained, which allow to connect the microcharacteristics of polymer nanocomposites with their macroscopic parameters.