Thermal stability of organic-inorganic composites based on dimethacrylate-tetraethoxysilane system

Authors:

Galyna Khovanets, Оlena Makido, Viktoria Kochubei, Тetyana Sezonenko, Yuriy Medvedevskikh, Vladyslav Voloshynets

Galyna Khovanets-1, Оlena Makido-1, Viktoria Kochubei-2, Тetyana Sezonenko-1, Yuriy Medvedevskikh-1, Vladyslav Voloshynets-2

1 Department of Physical Chemistry of Fossil Fuels InPOCC National Academy of Sciences of Ukraine, 3а, Naukova St., 79060 Lviv, Ukraine
2 Lviv Polytechnic National University, 12, S. Bandera St., 79013 Lviv, Ukraine khovanets_galyna@ukr.net

The influence of composition of hybrid organic-inorganic composites based on oligoesteracrylate (MGF-9)−tetraethoxysilane (TEOS) system on their thermal properties and molecular structure was investigated. Thermograms and curves of thermal destruction of samples were obtained, from which temperature ranges, weight loss of samples and thermal effects of each stage were defined. It is shown that introducing an inorganic filler into polymer matrix promotes increasing of thermal stability of the material. Values of characteristic parameters of studied organic-mineral composites were calculated as the result of thermomechanical analysis of obtained curves. The composite MGF-9:TEOS = 90:10 (vol %) was found to have the maximal thermal resistance and improved thermomechanical properties.

thermogravimetry

differential thermal analysis

thermomechanical analysis

organic-inorganic composite

sol-gel system

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