Characterization and swelling properties of copolymer Poly(N, N-dimethyl acrylamide -co-acrylic acid) and homopolymer Poly (acrylic acid)

Abstract

This paper investigates the swelling properties of homopolymer and copolymer hydrogels. Copolymeric hydrogels based on N, N-dimethyl acrylamide and acrylic acid (poly(DMA-co-AAc) as well as homopolymer hydrogels based on acrylic acid (polyAAc) were synthesized by radical technique in aqueous solutions using ammonium persulfate as an initiator and N, N-methylene-bis-acrylamide as a crosslinking agent. The properties of hydrogels examined including scanning electron microscopy (SEM) and FT-IR. The results indicate that the poly(DMA-co-AAc) copolymer has a high swelling ability in an aqueous solution. The swelling of hydrogels were achieved a maximum degree and diameter of 270 and 63mm in water, respectively. The swelling behavior of these hydrogels was investigated to determine function of the effect of pH and polymeric compositions.

Crosslinked poly(hydroxybutyl acrylate-co-acrylamide) based hydrogels: synthesis, characterization, and performance evaluation in heavy metal removal

“…As expected, the amount of weight loss during swelling in the prepared hydrogels decreases with increasing MBA content. The same behavior was observed when the swelling property of copolymer of N, N-dimethyl acrylamide with acrylic acid (poly(DMA-co-AAc) was studied [26].…”