Thermal stability of new sorption materials based on polysiloxanes / Neudachina L. K.,Golub A. Ya,Gorbunova E. M.,Yatluk Yu G. // GLASS PHYSICS AND CHEMISTRY. - 2011. - V. 37, l. 6. - P. 603-612.

ISSN/EISSN:

1087-6596 / нет данных

Type:

Article

Abstract:

The thermal stability of the unmodified, aminated, and thiocarbamoylated polysiloxanes has been studied. The siloxane matrix is stable in the temperature range up to 800A degrees 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 800A degrees 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.

Author keywords:

polysiloxane; sol-gel synthesis; thermal destruction; thermogravimetry LIGAND SYSTEM; COMPLEXES; THIOUREA

DOI:

10.1134/S1087659611060137

Web of Science ID:

ISI:000298396000004

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	LIGAND SYSTEM; COMPLEXES; THIOUREA
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Ceramics
Author-Email	Ludmila.Neudachina@usu.ru yatluk@ios.uran.ru
Funding-Acknowledgement	Federal Targeted Program ``Research and Scientific-Pedagogical Personnel of the Innovative Russia{''} {[}P278]
Funding-Text	This study was supported by the Federal Targeted Program ``Research and Scientific-Pedagogical Personnel of the Innovative Russia in 2009-2013{''} (State Contract No. P278).
Number-of-Cited-References	30
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	28
Journal-ISO	Glass Phys. Chem.
Doc-Delivery-Number	866QL