polymerization and drying. First, polyacrylamide synthesis was carried out in concentrated
aqueous solutions of acrylamide at 30° C. Polymerization was initiated by
K2S2O8/Na2S2O3 an oxidation–reduction system. The monomer conversion degree at this
stage did not exceed 80%. Further, polymerization with simultaneous solvent elimination
from the prepolymer was carried out in a dryer with infrared heat supply and natural …