2018 (2) 4

Structure and properties of interpenetrating polymer networks containing poly(titanium oxide) obtained in 2-hydroxyethyl methacrylate medium

T.T. Alekseeva, T.V.Tsebrienko, N.V. Babkina, N.V. Iarova, L.O. Vorontsova

Institute of Macromolecular Chemistry of NAS of Ukraine

48, Kharkivske shose, Kyiv, 02160, Ukraine

Polym. J., 2018, 40, no. 2: 98-105

Section: Structure and properties.

Language: Ukrainian.

Abstract:

The influence of poly(titanium oxide) obtained by sol-gel method in the medium of 2-hydroxyethyl methacrylate on the viscoelastic and thermophysical properties of interpenetrating polymer networks (IPNs) based on the crosslinked polyurethane, poly(hydroxyethyl methacrylate) (PHEMA) was investigated.The two-phase structure both the initial IPNs and the organo-inorganic (OI) IPNs was established by dynamic mechanical analysis and differential scanning calorimetry (DSC) methods. The presence of poly(titanium oxide) increases the compatibility of IPNs components as was shown by DSC and scanning electron microscopy (SEM). It was found the increasing of poly(titanium oxide) content leads to decrease the intensity of the relaxation maximum of PHEMA phase and to increase the effective crosslinking density due to a partial grafting of the inorganic component to acrylate one. It was shown that the topology of the structure of poly(titanium oxide) significantly influences the relaxation behavior of OI IPNs samples. According to SEM data, the distribution of the inorganic component in the polymer matrix is uniform, without significant aggregation.

Key words: poly(titanium oxide), sol-gel method, interpenetrating polymer networks, 2-hydroxyethyl methacrylate, polyurethane.

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