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<p>In the present work, graft copolymerization of chitosan with methacrylamide was performed via free radical polymerization using ceric ammonium nitrate as an initiator in a 1% acetic acid solution under a nitrogen atmosphere. FTIR, GPC, and TGA were used to characterize both chitosan and chitosan-graft-methacrylamide. The optimization of methacrylamide graft copolymerization onto chitosan was carried out by examining the primary factors influencing the grafting process, including the concentrations of chitosan, methacrylamide, and initiator, as well as the polymerization process reaction time. To achieve the maximum grafting parameters, such as %G, %E, %Hp, and % total conversion, the following conditions were used: chitosan (2&#xa0;g), ceric ammonium nitrate (0.15&#xa0;g), methacrylamide (3.5&#xa0;g), reaction time (240&#xa0;min) and temperature (70&#xa0;°C).</p>

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Synthesis and characterization of chitosan-g-methacrylamide copolymers through free radical graft copolymerization and studies of their grafting parameters

  • 期刊论文

  • 发表日期：

    2025年5月30日

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  • Rushik Patel,
  • Rudresh Trivedi,
  • Mahendrasinh Raj,
  • Lata Raj

摘要

In the present work, graft copolymerization of chitosan with methacrylamide was performed via free radical polymerization using ceric ammonium nitrate as an initiator in a 1% acetic acid solution under a nitrogen atmosphere. FTIR, GPC, and TGA were used to characterize both chitosan and chitosan-graft-methacrylamide. The optimization of methacrylamide graft copolymerization onto chitosan was carried out by examining the primary factors influencing the grafting process, including the concentrations of chitosan, methacrylamide, and initiator, as well as the polymerization process reaction time. To achieve the maximum grafting parameters, such as %G, %E, %Hp, and % total conversion, the following conditions were used: chitosan (2 g), ceric ammonium nitrate (0.15 g), methacrylamide (3.5 g), reaction time (240 min) and temperature (70 °C).