Khuraman Hajiahmadzadeh
M.F. Nagiyev Institute of Catalysis and Inorganic Chemistry
PhD in Technical Science
https://orcid.org/0009-0008-2495-6783
heyat_mm@mail.ru
Goshgar Aliyev
M.F. Nagiyev Institute of Catalysis and Inorganic Chemistry
PhD in Technical Science
https://orcid.org/0000-0002-2237-3444
chemproblem@mail.ru
Gulnara Guliyeva
M.F. Nagiyev Institute of Catalysis and Inorganic Chemistry
https://orcid.org/0009-0005-2392-9423
gulnare.guliyeva.30121962@gmail.com
Lala Ibrahimova
M.F. Nagiyev Institute of Catalysis and Inorganic Chemistry
https://orcid.org/0009-0000-3371-0197
ibrahimovalala1969@gmail.com
Tarana Askerova
M.F. Nagiyev Institute of Catalysis and Inorganic Chemistry
https://orcid.org/0009-0000-9743-8380
askerovaterane4@gmail.com
Kinetic Parameters of the Modification Reaction of Polyisobutylene with Vinyl acetate, a Polar Monomer
Abstract
The article presents the results of the mathematical model and calculations of the parameters of the process of obtaining a copolymer by modifying polyisobutylene with a polar monomer of vinyl acetate at a temperature of 20-60°С in the presence of an AlCl3 catalyst. Using this, the results of the study of the effect of reaction conditions on polyisobutylene with vinyl acetate are given, the kinetic equations of these reactions are calculated, the values of the parameters are calculated, and the analysis of studies in the field of mathematical modeling of the process is reflected. This method allows us to reduce the number of experiments, resources and time, and also to obtain an arbitrary ratio of vinyl acetate to polyisobutylene that is satisfactory to us within the limits of experimental indicators. The dependence of the ratio of the concentrations of [VA] and [PIB] in the copolymer on temperature, reaction time, and the concentrations of PIB, VA and the catalyst (AlCl3) in the initial solution is analyzed, and the functional dependence between these parameters is formulated. Based on the developed kinetic model and experimental materials, the kinetic parameters of the modification reaction of PIB with VA were calculated. The rate constants of the reactions corresponding to the temperatures of 20, 40, 60°С for a catalyst amount of 2.23% (mass) were obtained as 0.4400, 0.4661 and 0.5423h-1. The rate constants corresponding to the same temperatures and a catalyst amount of 0.76% (mass) were obtained as 0.2300, 0.2334, 0.2442 h-1. The effect of the catalyst amount on the activation energy was also studied; E=4190 C/mol.(AlCl3=2.23%) (mass) and E=5206 C/mol.(AlCl3=0.76%) indicate the ease of the reaction.
Keywords: polyisobutylene, vinyl acetate polar polymer, AlCl3 catalyst, copolymer, temperature