Four organosilicate polymers synthesized by addition of vinyl- and H-substituted double four-ring silicic acid derivatives
were characterized using DSC and simultaneous TG-DTA measurements. Thermooxidative decomposition proceeds in several steps:
Oxidation of (Si−H) groups, oxidation of (Si−CH2−CH2−Si) bridges, and oxidation of (Si−CH3) groups, with formation of new (Si−O−Si) bonds.29Si-NMR-spectroscopic measurements confirm this interpretation. Thermoanlytical methods of investigation proved useful to characterize
these organosilicate polymers.