HYDROGELS FROM ACRYLIC ACID WITH N,N-DIMETHYLACRYLAMIDE: SYNTHESIS, CHARACTERIZATION, AND WATER ABSORPTION PROPERTIES

Abstract

Copolymer hydrogels of acrylic acid (AA) with N,N-dimethylacrylamide (NNDMAAm) were synthesized by solution free radical polymerization at different feed mol monomer ratios. The monomer reactivity ratios were determined by Kelen-Tds method. According to that, the monomer reactivity ratios for poly(AAco-NNDMAAm) were r 1 = 0.650 (M 1 =AA) and r 2 = 1.160 (M 2 =NNDMAAm), (r 1 x r 2 = 0.753).