MIKSAI, Filip, Bc. Thermal degradation of syntetic polymeric materils. [Thesis]. Technical University in Zvolen. Wood Fakulty; Department of Chemistry and Chemical Technologies. Supervisor’s name: Ing. Eva Výbohová, PhD. Professional qualification level: Engineer degree. Zvolen : DF TUZVO, 2021. 61 pages. The main content of the submitted diploma thesis is the thermal degradation of polyurethane (PUR) foams. The theoretical part of the thesis defines the issue in more detail, there are described polyurethanes, starting materials for the production of PUR, their synthesis, types, thermal degradation of polymers and fumes arising from the thermal decomposition of PUR foams. The practical part of the diploma thesis is focused on the determination of thermal degradation of two types of polyurethane foam-insulated insulation (EKOPRODUR S0310) and assembly foam (MASTERSil B1) by infrared spectroscopy. Significant changes occurred in the structure of the MASTERSil B1 assembly foam, with a thermal load above 150 °C. The sprayed insulation sample EKOPRODUR S0310 shows better thermal stability.