Open AccessCalculation of the main characteristics of polymer branching taking into account the exchange of activity between polymerization centres
Author(s) -
V. V. Bronskaya,
Э. В. Гарифуллина,
Т. В. Игнашина,
Г. А. Аминова,
G. V. Manuyko,
О. В. Харитонова,
Denis Balzamov
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/981/4/042023
Subject(s) - branching (polymer chemistry) , polymerization , polymer , macromolecule , catalysis , magnesium , polymer chemistry , chemistry , materials science , organic chemistry , biochemistry
The calculation of the main characteristics of the branching of the polymer is presented in the article using the example of polymerization of butadiene in the presence of an organolithium catalytic system modified with polyfunctional sodium and magnesium alcoholates. The addition of a modifier to the catalytic system leads to the participation in the polymerization of at least two types of active centers, which is the reason for some branching of macromolecules. The complemented mathematical model of the periodic process, taking into account the exchange of activity between the two centers, allows to calculate the main characteristics of branching.