IJBTT

High-Quality Synthesis of Terephthalamide from Secondary PET Waste

High-Quality Synthesis of Terephthalamide from Secondary PET Waste
	© 2025 by IJETT Journal
	Volume-73 Issue-4
	Year of Publication : 2025
	Author : Saidnazarov T. R, Turaev Kh. Kh, Karimov M.U, Kasimov Sh.A, Akhatov A.A
	DOI : 10.14445/22315381/IJETT-V73I4P132

How to Cite?
Saidnazarov T. R, Turaev Kh. Kh, Karimov M.U, Kasimov Sh.A, Akhatov A.A, "High-Quality Synthesis of Terephthalamide from Secondary PET Waste," International Journal of Engineering Trends and Technology, vol. 73, no. 4, pp.396-405, 2025. Crossref, https://doi.org/10.14445/22315381/IJETT-V73I4P132

Abstract
The article studies the two-step process of Terephthalamide synthesis, which is used to produce various polymers, pigments, and antioxidants. In the production of Terephthalamide, the relevant raw material, terephthalic acid, was synthesized from PET waste using a high-yield reaction method. Terephthalamide was synthesized from the obtained terephthalic acid. The effect of pressure, mass ratio of starting materials, temperature, and catalyst was studied to increase the reaction yield. Graphs and diagrams were constructed according to the reaction results. At the same time, the IR spectrum and Raman spectrum of the obtained Terephthalamide were obtained and analyzed. Also, the molecular structure, dynamics of intermolecular interactions, and thermal properties were studied using NMR analysis, TGA, and DTA analysis methods. Based on the results of the analysis, it was proven that the product obtained was terephthaldiamide.

Keywords
Polyethylene terephthalate (PET), Glycerin, Ethylene glycol, Urea, Reactor autoclave, Reaction product, Amination, Terephthalamide, DEF, DMSO.

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