2015 (4) 11

https://doi.org/10.15407/polymerj.37.04.402

Epoxy-titania composites of cationic polymerization: synthesis conditions and properties

S.V. Zhil’tsova, V.M. Mikhal’chuk, N.G. Leonova, R.I. Lyga, K.А. Volyanyuk

Donetsk National University

24, Universitetskaya str., Donetsk, 83001, Ukraine

Polym. J., 2015, 37, no. 4: 402-407.

Section: Synthesis polymers.

Language: Ukrainian.

Abstract:

Sol-gel method was used to prepare transparent epoxy-titania composites by cationic polymerization with TiO2 content 1–3 % wt. Titania sols were based on titanium tetrabuthoxide using ethanol, tetrahydrofuran or methylethylketone as a solvent. It was found that with titania content increase the composites’ crosslink density decreases. The highest glass transition temperature and the lowest sol-fraction yield possessed the composites obtained with the use of methylethylketone. It was shown that the process of hihg-temperature oxidation of the composites began after the induction period and proceeded with lower rate.

Key words: sol-gel method, titania, epoxy resin, cationic polymerization, composite.

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