2016 (2) 8

https://doi.org/10.15407/polymerj.38.02.158

The kinetics of the formation of organic-inorganic interpenetrating polymer networks in the presence of poly(titanium oxide) was obtained by sol-gel method

T.V. Tsebrienko, Т.Т. Alekseeva

Institute of Macromolecular Chemistry NAS of Ukraine

48, Kharkivske shose, Kyiv, 02160, Ukraine

Polym. J., 2016, 38, no. 2: 158-167.

Section: Synthesis polymers.

Language: Russian.

Abstract:

The features of the kinetics of the formation of organic-inorganic interpenetrating polymer network (OI IPNs) based on crosslinked polyurethane (PU) and polyhydroxyethylmethacrylate (PHEMA) in the presence of poly(titanium oxide) (–TiO2–)n, was obtained by sol-gel method with variation content of (–TiO2–)n and the molar ratio of titanium isopropoxide (Ti(OPri)4) to the water was 1:2 have been studied by calorimetric method. Organic-inorganic interpenetrating polymer networks were obtained with a ratio PU/PHEMA 30/70 % wt. It was shown that the rate of the formation of PHEMA-component decrease when content of poly(titanium oxide) in OI IPNs increased. It is associated with appearance of the “cell” effect due to the grafting poly(titanium oxide) to hydroxyethylmethacrylate (HEMA). It was found that the rate of polymerization of HEMA in the presence of poly(titanium oxide) which was obtained in the medium of polypropylene glycol (POPG) significantly higher then the rate of the formation PHEMA when poly(titanium oxide) was obtained in HEMA. The rate of the formation of PHEMA depends on the features of incorporation (–TiO2–)n in the organic matrix.

Key words: hybrid materials, kinetics, radical polymerization, “cell” effect, conversion degree.

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