1Department of Chemistry, Science Faculty, Islamic Azad University,Arak Branch, Arak Iran
2Department of english,Humaniti Faculty,Islamic Azad University,Arak Branch, Arak Iran
In this article, we synthesize of a novel starch-based superabsorbent hydrogel via graft copolymerization of mixtures of acrylic acid (AA) and 2-Hydroxy ethyl methacrylate (HEMA) onto starch backbones. The polymerization reaction was carried out in an aqueous medium and in the presence of ammonium persulfate (APS) as an initiator and N,N'-methylene bisacrylamide (MBA) as a crosslinker. The hydrogel structures were confirmed by FTIR spectroscopy. Furthermore, the swelling of superabsorbing hydrogels was examined in solutions with pH values ranging between 1 and 13. It showed a reversible pH-responsive behavior at pHs 2 and 8. This on-off switching behavior makes the synthesized hydrogels as an excellent candidate for controlled delivery of bioactive agents. A proposed mechanism for hydrogel formation was suggested and the structure of the product was established using FTIR and SEM spectroscopies.
Copy the following to cite this article:
Mohammad Sadeghi1* and Mojgan Yarahmadi2 , "Synthesis of pH-sensitive hydrogel based on Starch-poly (acrylic acid-co-HEMA) superabsorbent ", Journal of Ultra Chemistry, Volume 7, Issue 2, Page Number 253-258, 2016Copy the following to cite this URL:
Mohammad Sadeghi1* and Mojgan Yarahmadi2 , "Synthesis of pH-sensitive hydrogel based on Starch-poly (acrylic acid-co-HEMA) superabsorbent ", Journal of Ultra Chemistry, Volume 7, Issue 2, Page Number 253-258, 2016Available from: http://journalofchemistry.org/paper/494/