Kavalerskaya N.E., Strusovskaya N. L., Ferapontov N.B.
М.В. Lomonosov Moscow State University
Kinetics of swelling and the equilibrium behaviour of gel of the cross-linked polyacryamide
(PAA) in aqueous solutions of LiCl and КС1 with different concentrations were studied by
optical and column methods. It has been shown the complicated character of kinetics of
polymer swelling in some cases. It depends on nature of the dissolved substances. The
dependences of amounts and concentrations of substances in the PAA gel on their
concentrations were studied by column method. It has been shown that the concentration of
the dissolved substance in gel of the cross-linked PAA can exceed its concentration in the
equilibrium solution. The possible reasons of observed phenomena were analysed.
Keywords: polyacrylamide gel, swelling, kinetics.