Synthesis of polyampholytes by copolymerization of N-(3-dimethylamino-1,1-dimethylpropyl)acrylamide with methacrylic acid

Kinetics of binary radical copolymerization of N-(3-dimethylamino-1,1-dimethylpropyl)acrylamide with methacrylic acid was studied in aqueous solution in a wide range of molar monomer ratios. By means of the Kelen-Tudos method, the initial reactivity ratios of the comonomers were found to be 1.71 ± 0.65 for N-(3-dimethylamino-1,1-dimethylpropyl)acrylamide and 1.44±0.66 for methacrylic acid, and the pattern of their variation during copolymerizahon was established. The viscous properties of prepared copolymers of various compositions are compared with their ability to flocculate a suspension of carbon slurry