KINETIC CHARACTERISTICS OF POLYCONDENSATION OF THE ADIPIC ACID WITH DIETHYLENETRIAMINE

UDC 547.461.6:544.4

  • Borkina Yana Valer’evna – PhD student, the Department of Chemical Processing of Wood. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: yanaborkina@mail.ru

  • Fleisher Vyacheslav Leonidovich – PhD (Engineering), Associate Professor, Head of the Department of Chemical Processing of Wood. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: v_fleisher@list.ru

DOI: https://doi.org/10.52065/2520-2669-2021-247-2-53-59

Key words: polycondensation, kinetic charasteristics, degree of completion of the reaction, degree of polymerization, molecular weight, polyaminoamides, reaction rate constant.

For citation: Borkina Ya. V., Fleisher V. L. Kinetic characteristics of polycondensation of the adipic acid with diethylenetriamine. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2021, no. 2 (247), pp. 53−59 (In Russian). DOI: https://doi.org/10.52065/2520-2669-2021-247-2-53-59.

Abstract

Polymer materials are widely used in the technology of cellulose-containing composite materials as strengthening agents, coagulants, flocculants. Of particular interest are polyaminoamides based on adipic acid and diethylenetriamine, which are currently the basis of resins that give paper and cardboard strength in wet and dry conditions and provide an opport unity for their further modification due to the presence of a secondary aminogroup in their structure.

The article presents the results of calculating the following kinetic characteristics of the polycondensation process of adipic acid and diethylenetriamine in the form of graphical dependencies: the degree of suspension of the reaction, the average number and average mass degrees of polymerization the average number and average number and average mass of molecular masses. Based on the result obtained the reaction rate constans are calculated when the reaction is carried out at different temperatures. When conduncting the process of polycondensation adipic acid with diethylenetriamine at 180°C, it is possible to obtain a product with an average acid degree of polymerization of 412 non acid molekules whit a mass 60,215 g/mol, white the degree of completion of the reaction will be 0.998.

The results obtained will allow controlling the process of polycondensation of adipic acid and diethylenetriamine, conducted in the melt at the molar ration of reagents 1 at a temperature of 160–180°С in order to obtain a product with the specified characteristics.

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30.04.2021