Optimization of the Water Absorption by Crosslinked Agar-g-Poly(acrylic acid)

Agar 그래프트 폴리아크릴산 겔의 흡수능 최적화

  • Wuttisela, Karntarat (Institute for Innovation and Development of Learning Process, Mahidol University) ;
  • Panijpan, Bhinyo (Institute for Innovation and Development of Learning Process, Mahidol University) ;
  • Triampo, Wannapong (Institute for Innovation and Development of Learning Process, Mahidol University) ;
  • Triampo, Darapond (Institute for Innovation and Development of Learning Process, Mahidol University)
  • Published : 2008.11.30

Abstract

Crosslinked agar-g-poly(acrylic acid) (x-agar-g-PAA) super absorbent with a water absorbency ($Q_{H2O}$) of approximately 660 g/g was synthesized by the copolymerization of agar with an acrylic acid monomer. KPS and MBA were used as the initiator and crosslinker, respectively. Grafting was performed in air. Infrared spectroscopy was used to identify the product of copolymerization. The optimum conditions to synthesize the x-agar-g-PAA superabsorbent were 0.1 g of agar, 0.1 g of the KPS initiator, for 15 min; 50% AA monomer, 0.005 g of the MBA crosslinker, for a propagation time of 5 min; and 1 M NaOH for 15 min to allow for saponification. The reaction temperature was $80{^\circ}C$.

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