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S. Lu, M. Duan and S. Lin, “Superabsorbent Polymeric Materials VIII: Swelling Behavior of Crosslinked Poly [sodium acrylate-co-trimethyl methacryloyloxyethyl ammonium iodide] in Aqueous Salt Solutions,” Journal of Applied Polymer Science, Vol. 79, No. 9, 2001, pp. 1665-1674.
doi:10.1002/1097-4628(20010228)79:9<1665::AID-APP160>3.0.CO;2-P
has been cited by the following article:
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TITLE:
Synthesis of pH-Sensitive Hydrogel Based on Starch-Polyacrylate Superabsorbent
AUTHORS:
Mohammad Sadeghi, Fatemeh Soleimani
KEYWORDS:
Starch; Hydrogel; pH-Sensitive; Vinylic Monomers
JOURNAL NAME:
Journal of Biomaterials and Nanobiotechnology,
Vol.3 No.2A,
May
11,
2012
ABSTRACT: 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.