N. G. Leonova

N. G. Leonova
Vasyl' Stus Donetsk National University · Inorganic, Organic and Analytical Chemistry

Doctor of Philosophy

About

11
Publications
358
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19
Citations
Introduction
N.G. Leonova currently works at the Organic, Inorganic and Analytical Chemistry, Vasyl' Stus Donetsk National University. Natalya does research in Polymer Chemistry. Their current project is 'Leonova'.

Publications

Publications (11)
Article
The structural properties of epoxy-silica nanocomposites of anhydride curing synthesized by the sol-gel method were studied using small-angle X-ray scattering and electron microscopy. It was shown that the aggregation processes change significantly during the formation of sols of silica nanoparticles (SP) by using 3-glycidoxypropyltriethoxysilane (...
Article
The structural features of epoxy-silica nanocomposites were studied using small-angle X-ray scattering and electron microscopy. It was shown that during the formation of sols of silica nanoparticles in the presence and absence of an epoxy oligomer in the system, their aggregation processes change significantly. Using fractal analysis, the type of f...
Article
Structural features of epoxy–silica nanocomposites obtained by cationic polymerization were studied by small-angle X-ray scattering. An increase in the amount of the inorganic phase in this system leads to greater aggregation of the silica particles. The structure of such systems is described satisfactorily be a model with multilevel fractal aggreg...
Article
Full-text available
Viscoelastic properties of amine-cured epoxytitania composites were investigated. The composites were synthesized by the sol-gel method and analysis of their physico-mechanical properties indicated that higher TiO2 content causes the decrease in glass transition temperature of the composites. Non-linear change of crosslink density with a filler con...
Article
Small-angle X-ray scattering indicates that increase of the silica particle (PSP) content leads to changes in the fractal organization of epoxy-silica composites and in the number of levels of self-similarity. Fractal structures of the primary silica particles in the size range of 4-14 nm are formed, and with increasing particle size they aggregate...
Article
Full-text available
The polymer and composites were received using epoxy resin EPONEX 1510 – diglycidyl ether of dicyclohexylolpropane and 15 % solution of boron trifluoride in diethylene glycol. The silica particles were formed in situ via the sol-gel method using hydrolytic polycondensation of tetraethoxysilane. The silica sol was obtained in acetone as the organic...
Article
Full-text available
Sol-gel method was used to obtain optically transparent epoxy-silica nanocomposites of anhydride curing with different ways for polysiloxane particles (PSP) sols formation. The results of microscopic studies indicate that with a SiO2 content of 1 wt.%, a uniform distribution of the aggregates of the primary nanoparticles in the polymeric matrix of...
Article
Full-text available
Epoxy-polysiloxane composites of cationic polymerization were synthesized based on epoxy resin and tetraethoxysilane. The thermophysical properties of the resulting polymers were studied. It was established that, as the filler content increases from 0.5 to 3 wt %, the molecular weight of an intermodal segment increases and the cross-linking density...
Article
The anticorrosion properties of epoxy-polysiloxane coatings on the surface of the aluminum alloy D-16 were studied by a potentiodynamic method. It was established that the use of the hybrid coating led to an increased corrosion resistance from 0.250 kΩm·cm2 for uncoated alloy to 0.396-0.996 kΩm·cm2 for the coated aluminum support. The yield of the...
Article
Cationic polymerization of dicyclohexylpropane diglycidyl ether in the presence of boron trifluoride was studied with the aim to prepare hybrid coatings.

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