Some peculiarities of the kinetics of interaction of cationic hydrogels based on copolymers of vinyl esters of monoethanolamine and ethylene glycol with copper ions
Mun G. Yeligbayeva G. Nakan U. Amitova A. Suleimenov I.
September 2021International University of Sarajevo
Periodicals of Engineering and Natural Sciences
2021#9Issue 4291 - 304 pp.
Over the past few decades, formation of polymer hydrogels complexes with metal ions, including transition ones, attracts the steady attention of researchers. The relevance of such study is due to the fact that the kinetics of swelling and contraction of hydrogels in various media has been studied in many works, however, this question remains insufficiently studied. Cationic hydrogels based on copolymer of vinyl ethers of monoethanolamine (VEMEA) and ethylene glycol (VEEG) as the study subject in the present work have been used. The kinetics of interaction cationic hydrogels based on copolymer of vinyl ethers of monoethanolamine and ethylene glycol with copper ions in aqueous solutions has been studied. It was shown that swelling behavior such hydrogel in this process is characterized two stages. At the initial stages of the interaction of the gel with the copper salt solution, the interaction in question is determined mainly by the displacement of water from the swollen mesh, due to the difference in osmotic pressures inside and outside the sample. At this stage, the kinetics of the gel contraction is described by the same laws as for polyelectrolyte hydrogel in the alkali metal solution. At the second stage, the network charge density increases due to the formation of a complex, and the degree of the gel swelling begins to increase with time. On the basis of the results obtained, it can be assumed that in systems of this kind, metastable states with differences in character from truly equilibrium states, persisting for a long time, can be formed.
Cationic polymer hydrogels , Complex formation , Coordination bonds , Copolymer , Swelling behavior
Text of the article Перейти на текст статьи
Department of Chemistry and Technology of Organic Substances, Natural Compounds and Polymers, Al-Farabi Kazakh National University
Department of Chemical and Biochemical Engineering, Satbayev University
Department of Engineering Disciplines, Asfendiyarov Kazakh National Medical University
Department of Petroleum and Chemical Technologies, National Engineering Academy, Kazakhstan
Department of Chemistry and Technology of Organic Substances
Department of Chemical and Biochemical Engineering
Department of Engineering Disciplines
Department of Petroleum and Chemical Technologies
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026