Вид документа : Шифр издания : 54/T 44 Автор(ы) : Neudachina L.K., Golub A. Y., Gorbunova E. M., Yatluk Yu. G. Заглавие : Thermal stability of new sorption materials based on polysiloxanes Место публикации : Glass Physics and Chemistry. - 2011. - Vol.37, №6. - С. 603-612 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): thermal stability --thiocarbamoylated polysiloxanes --siloxane matrix Аннотация: The thermal stability of the unmodified, aminated, and thiocarbamoylated polysiloxanes has been studied. The siloxane matrix is stable in the temperature range up to 800°C. For the first time, mass spectrometry has been applied to the analysis of the composition of the gaseous products of thermal decomposition of the studied polysiloxanes. It has been shown that, in the process of thermal decomposition, the terminal functional groups are detached and oxidized. Water, ammonia, nitrogen, carbon, and sulfur (in the case of thiourea-modified sorbent) oxides are formed predominantly. The quantitative removal of functional groups during heating up to 800°C has been confirmed by IR spectroscopy. A mechanism of thermal decomposition of polysiloxane xerogels has been proposed. It has been found that adsorption of platinum increases the thermal stability of the samples Доп.точки доступа: Neudachina, L.K.; Golub, A. Y.; Gorbunova, E. M.; Yatluk, Yu. G.; Ятлук Юрий Григорьевич