ABSTRACT
Abstract .................................................................................................................256 13.1 Introduction ................................................................................................257 13.2 Experimental ..............................................................................................257 13.3 Results and Discussion ..............................................................................258 13.4 Conclusion .................................................................................................263 Keywords ..............................................................................................................264 References .............................................................................................................264
Macromolecular structure of chlorine-containing ethylene-propylene-diene caoutchoucs (EPDM) and their probable changes, which happen in the process of caoutchoucs vulcanization, were studied by method of infrared spectroscopy. Caoutchoucs CEPDM-2, CEPDM-4, and CEPDM-16, consequently containing 2, 4, and 16% (mole) chlorine, were taken for the investigation. As a sample for comparison, initial ethylene-propylene-diene caoutchouc EPDM without halogen was used. To determine thermostability of macromolecular structures of investigated polymers under vulcanization temperature, the specimens of caoutchoucs were subjected to heating vulcanizing press under temperature 151 °C during 5, 10, 20, 30, 40, 50, and 60 min.
