Open AccessSwelling of polyacrylamide-based hydrogel in aqueous solutions of low-molecular salts
Author(s) -
Е. В. Воробьёва
Publication year - 2020
Publication title -
doklady nacionalʹnoj akademii nauk belarusi
Language(s) - English
Resource type - Journals
eISSN - 2524-2431
pISSN - 1561-8323
DOI - 10.29235/1561-8323-2020-64-3-293-299
Subject(s) - swelling , potassium , sodium , polyacrylamide , aqueous solution , chemistry , chloride , polymer , polymer chemistry , kinetics , inorganic chemistry , materials science , organic chemistry , composite material , physics , quantum mechanics
The swelling kinetics of cross-linked polyacrylamide was studied depending on the composition of the external solution. It was shown that the polymer gel swelling during the transition from water to a potassium or sodium chloride solution and vice versa sharply decreases, then gradually increases. The swelling of gel in a solution of sodium chloride is higher than that of potassium chloride. In the equilibrium swollen gel, the concentration of salts in the gel phase is higher than in the external solution and increases with the transition from potassium chloride to sodium chloride.