2020 (4) 6
https://doi.org/10.15407/polymerj.42.04.283
INVESTIGATION OF THE STRUCTURE AND PROPERTIES OF POLYURETHANE COMPOSITIONS MODIFIED WITH METAL-CONTAINING COMPOUNDS
L.A. Markovska,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
N.Y. Parkhomenko,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
A.V. Rudenko,
SI “Institute of Urology” NAMS of Ukraine, 9A, V.A Vynnychenko str., Kyiv, 04053, Ukraine
O.A. Savelyeva,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
S.M. Ostapyuk,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
Yu.V. Saveliev,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
Polym. J., 2020, 42, no. 4: 283-291.
Section: Structure and properties.
Language: Ukrainian.
Abstract:
New cross–linked and linear polyurethane compositions with different content of various reactive metal[Ni,Zn,Cu]inorganic modifiers (MIM) were synthesized. The results of IR spectroscopy confirm the reaction and structural reorganization in the system under the influence of MIM. Thus, in the region of stretching vibrations of NH groups of the urethane fragment, a shoulder increase was noted in the region of weakly bound stretching vibrations of NH groups at 3456 cm-1 and a new band at 4314 cm-1 appears, which indicates the presence of hydrogen bonds with the chlorine ion CuCl2. The presence of MIM in polyurethane leads to a shift of valence vibration of urethane group band νС =O to the region of 1723 cm-1 and the appearance of an intensive shoulder 1711 cm-1, which indicates the formation of a coordination bond C = O → Cu[Cl2]. The appearance in the IR spectrum of the polymer with MENM content of three new bands with maximums (530, 558 and 637) cm–1 indicates the formation of a coordination bond N → Cu. It was shown that the presence of transition metals dichlorides in the polymer structure provides opportunities for target production of polyurethane compositions with a set of specified properties, namely: fungicide properties, which were provided by the presence of Zn- and Cu-chlorides, photostability which was provided by the presence of Ni-chloride. In this case, the incorporation of active compounds into the structure of the polymer excludes the diffusion of MIM on the surface of the material with subsequent removal and thus prolongs the protective functions of the coating – resistance to biocorrosion, UV radiation, chemical agents, heat resistance while maintaining high adhesion / cohesion.
Keywords: polyurethane compositions, cross-linked, linear, inorganic modifiers, coatings, adhesion, stabilyty, environment.
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