2016 (3) 4

https://doi.org/10.15407/polymerj.38.03.211

Thermal stability of organic-inorganic nanocomposites based on system of dimethacrylate-tetraethoxysilane and their kinetic features

G.I. Khovanets’ , O.Y. Makido, V.V. Kochubey, Y.G. Medvedevskikh

Department of Physical Chemistry of Fossil Fuels InPOCC NAS of Ukraine

3a, Naukova str., Lviv, 79060, Ukraine

National University “Lvivska Politechnika”

12, S. Bandery str., Lviv, 79013, Ukraine

Polym. J., 2016, 38, no. 3: 211-217.

Section: Structure and properties.

Language: Ukrainian.

Abstract:

The influence of hybrid organic-inorganic composites based system б,щ-dimethacryloyil (threediethylenoxidthereftalate) (MGF-9) – thetraethoxisilane (TEOS) on the kinetics of photoinitiated polymerization to deep conversion, thermal properties and molecular structure was investigated. The dependence of the values of the maximum speed of polymerization, conversion and time to its achieving on the ratio of MGF-9 : TEOS in the composition was detected. It is shown that the introduction of inorganic filler in the polymer matrix promotes thermal stability of the material. It was found that the maximum thermal stability of a composite MGF-9 : TEOS with the ratio 90 : 10 % vol. This composite is characterized by high speed of polymerization on the stage of autoacceleration with minimal time to achieve it. The obtained experimental data confirm the dependence of kinetics of polymerization and properties of nanocomposites on the ratio of the organic and inorganic component of system. This dependence is not linear, due to the structure of the formed composite.

Key words: organic-inorganic nanocomposite, photoinitiated polymerization, kinetics to deep conversion, thermogravimetry, differential thermal analysis.

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