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This work presents the synthesis and characterization of free radical nanostructured hydrogels comprised of poly (acrylamide-co-sodium acrylate) [P(Am-co-ANa)] particles dispersed in a matrix comprised of the same copolymer. The particles were synthesized by the direct emulsion polymerization process, and like the hydrogel matrix were polymerized at room temperature using the sequential step technique. N,N’-methylenebisacrylamide (NMBA) was used as crosslinking agent and the redox couple composed of potassium persulfate (KPS) and N,N,N’,N’,-Tetramethyl ethylenediamine (TMDA) as polymerization initiators. The hydrogels obtained were characterized by infrared spectroscopy (FTIR) and the compressive strength of each of them was evaluated. The effect of the composition (ratio between monomers) and the concentration of nanoparticles in the hydrogel matrix on the swelling kinetics at different pH values at a constant temperature of 30 ℃ was studied. Finally, the adsorption capacity of Cu2+, Co2+, and Ni2+ ions by the synthesized hydrogels was evaluated with the help of UV-VIS spectroscopy.

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Use of Nanostructured Hydrogels Composed of Poly (Acrylamide-Co-sodium Acrylate) and Their Application in the Removal of Metal Ions

  • 会议论文

  • 发表日期：

    2026年

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  • Erika Patricia Ledesma González,
  • Jessica Gabriela Gomez Casillas,
  • Lourdes Adriana Pérez Carrillo,
  • Rosaura Hernández Montelongo,
  • Abraham Gabriel Alvarado Mendoza

摘要

This work presents the synthesis and characterization of free radical nanostructured hydrogels comprised of poly (acrylamide-co-sodium acrylate) [P(Am-co-ANa)] particles dispersed in a matrix comprised of the same copolymer. The particles were synthesized by the direct emulsion polymerization process, and like the hydrogel matrix were polymerized at room temperature using the sequential step technique. N,N’-methylenebisacrylamide (NMBA) was used as crosslinking agent and the redox couple composed of potassium persulfate (KPS) and N,N,N’,N’,-Tetramethyl ethylenediamine (TMDA) as polymerization initiators. The hydrogels obtained were characterized by infrared spectroscopy (FTIR) and the compressive strength of each of them was evaluated. The effect of the composition (ratio between monomers) and the concentration of nanoparticles in the hydrogel matrix on the swelling kinetics at different pH values at a constant temperature of 30 ℃ was studied. Finally, the adsorption capacity of Cu2+, Co2+, and Ni2+ ions by the synthesized hydrogels was evaluated with the help of UV-VIS spectroscopy.