SYNTHESIS OF OLIGOMER BASED ON SODIUM POLYSULFIDE AND HYDROLYZED ED-20 EPOXY RESIN: STRUCTURE AND PROPERTIES
DOI:
https://doi.org/10.15421/jchemtech.v33i3.328434Keywords:
Oligomer synthesis, 1,1,2-trichloroethane, hydrolyzed ED-20 epoxy resin, sodium polysulfide, reaction kinetics, physicochemical propertiesAbstract
This article studies the process of oligomer synthesis based on sodium polysulfide, hydrolyzed ED-20 epoxy resin and 1,1,2-trichloroethane. The reaction mechanism, synthesis conditions and physicochemical properties of the product are analyzed. Based on the results of scientific research, the dependence of the oligomer formation process on temperature, reaction time, and reagent concentration was determined. UV-spectral analysis of the obtained sodium polysulfide oligomer (UV-Vis spectrometer range 350–800 nm, maximum reflectance – 67.02 %, light absorption – 323 nm), IR spectra, elemental analysis were conducted. The electron density surface (ESP) of the synthesized oligomer based on sodium polysulfide, hydrolyzed ED-20, and 1,1,2-trichloroethane optimized at the B3LYP/6-31G(d) level is presented in the GAUSSIAN 16 program. The stability, physicochemical properties, and functional capabilities of the synthesized oligomers indicate that they have high prospects for industrial production processes, especially for the preparation of hermetic materials, coatings, and composites, as well as for the creation of new materials in scientific research.
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