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  • 1 National Academy of Sciences of Ukraine Institute for Sorption and Problems of Endoecology Ul. Naumov 13 252680 Kyiv-164 Ukraine Ul. Naumov 13 252680 Kyiv-164 Ukraine
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Abstract  

Thermal stability of silica-polyvinylsiloxane systems with different ratio of hydrophilic and hydrophobic components and its forms with adsorbed dyes were studied using thermochemical method. It was shown that the maximum of endoeffect relating to dehydroxylation of sorbents surface is observed at 325C. The maximum temperature of the second endoeffect depends on the organosilica sorbents composition and increases with a decrease of hydrophilic and hydrophobic sites ratio. It was found that the values of the summary thermal effect lowers upon the raise of the quantity of silanol groups. It was shown that thermal stability of composition materials is higher in comparison with initial organosilica sorbents.