Use of microwave aminolytic destruction products of polyethylene terephthalate in rubbers based on chloroprene rubber
https://doi.org/10.20914/2310-1202-2021-3-182-190
Abstract
In this paper, a method of recycling polyethylene terephthalate (PET) waste with a mixture of amino-alcohols - mo-noethanolamine and triethanolamine, taken in a certain ratio, is considered. As a result, of the degradation reaction, terephthalic acid diamide (N, N'-bis (2-hydroxyethyl) terephthalamide) is formed. To accelerate the destruction process, microwave radiation of various powers was used. The optimal conditions for PET decomposition have been determined: the time and power of microwave radiation with the yield of the target product (terephthalic acid diamide) 80-85%. The destruction process was carried out without the use of catalysts and at atmospheric pressure. The aminolytic degradation product of PET (terephthalic acid diamide) was used as a monomer in the polycondensation reaction to obtain a new oligomer. The obtained oligomer and the PET degradation product were investigated as new components in rubbers based on three grades of chloroprene rubber with different crystallization rates. The accelerating effect of new ingredients on the process of sulfur vulcanization of rubbers based on chloroprene rubber has been revealed. It has been demonstrated that the introduction of an oligomer based on a PET degradation product reduces the viscosity of rubber compounds by 25-35%. The effect on the elastic-strength properties of the obtained rubbers be-fore and after thermal aging is considered. It is shown that terephthalic acid diamide and oligomer based on it have an effect on the elastic-strength properties of the studied rubbers before and after thermal aging. In the future, a more detailed consideration of the effect of the new obtained ingredients in rubbers based on polar rubbers and thermoplastics on the physicochemical and physicomechanical parameters is planned.
About the Authors
M. A. Vokhmyanin
Vyatka State University
Russian Federation
Russian Federation
postgraduate student, chemistry and technology of polymer processing department, Moscow str., 36. Kirov, 610020, Russia
R. L. Vesnin
Vyatka State University
Cand. Sci. (Engin.), head of the department of chemistry and technology of polymer processing, Moscow str., 36. Kirov, 610020, Russia
A. D. Kraev
Vyatka State University
postgraduate student, chemistry and technology of polymer processing department, Moscow str., 36. Kirov, 610020, Russia
V. A. Sedykh
Voronezh State University of Engineering Technologies
Cand. Sci. (Engin.), chemistry and chemical technology of organic compounds and polymer processing department, Revolution Av., 19, Voronezh, 394036, Russia
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Review
For citations:
Vokhmyanin M.A., Vesnin R.L., Kraev A.D., Sedykh V.A. Use of microwave aminolytic destruction products of polyethylene terephthalate in rubbers based on chloroprene rubber. Proceedings of the Voronezh State University of Engineering Technologies. 2021;83(3):182-190. (In Russ.) https://doi.org/10.20914/2310-1202-2021-3-182-190
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