Low-temperature condensation of m-phenylene diamine and various aromatic aldehydes (benzaldehyde, m-, o-nitrobenzaldehyde, p-diethylaminobenzaldehyde, o-, p-hydroxybenzaldehyde and 4-hydroxy-3,5-ditert-butylbenzaldehyde) in the ethyl alcohol medium synthesized new azomethine compounds. With the help of spectral methods and elemental analysis, the structure of the azomethine compounds obtained was confirmed. It was founded that irradiation of azomethine compounds with UV light at a wavelength of 300 -330 nm results in their emission. The luminescent properties of the resulting compounds are due to the presence of chromophore azomethine groups in the molecule structure. In particular, the π-electrons of the azomethine bonds can undergo irradiation to a different energy levels, accompanied by fluorescence. It was shown that synthesized azomethine compounds are capable of oxidative polymerization. Based on azomethine compounds in hydrochloric acid solution synthesized polymers with conjugated bonds, which had low molecular-mass characteristics. It is shown that the oxidative polymerization of azomethines proceeds through a slow (one-electron transfer) and rapid (recombination of the radical cations) stage.

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The most typical behaviour features of polymer nanocomposites filled with dispersed calcium carbonate were considered. The quantitative analysis was carried out within the frameworks of structural model: the cluster model of polymers amorphous state structure and fractal analysis. It has been shown that all changes of the considered nanocomposites properties were defined by polymeric matrix structure variations, which are due to nanofiller introduction.

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Upgrade of the composition of cable PVC-compound grade I40-13A with aluminum hydroxide has been carried out. Fire resistance, thermophysical and physical-mechanical properties of the obtained compounds have been investigated. It is shown that the modernization of the composition of cable PVC compound with aluminum hydroxide enables production of a fi re-resistant compound. It was found that aluminum hydroxide significantly changes the thermophysical properties of cable plastic compound. In particular, heat generation and smoke generation during plastic compound combustion are significantly reduced. It has been established that the physical-mechanical and rheological characteristics of the cable compound modernized with aluminum hydroxide remain at the level of the original compound. The optimal amount of aluminum hydroxide for the modernization of cable plastic compound of the I40-13A grade is 10–15 wt.%.