Study of cryostructurization of polymer systems. VIII. Characteristic features of the formation of crosslinked poly(acryl amide) cryogels under different thermal conditions

The influence of the freezing procedure of the solution of initial reactants (acrylamide, N,N′‐methylene‐bis‐acrylamide, radical polymerization initiator) on the dynamics of gel formation and on the properties of the obtained cryogels was investigated. The quenching technique which consists in rapid deep freezing with following heating of the reaction mixture to the preassigned cryosynthesis temperature, results in another macrostructure of the cryogel and differences in the dynamics of gel formation as compared with the usual one‐step freezing method.