• Optimization of the Water Absorption by Crosslinked Agar-g-Poly(acrylic acid)
  • Wuttisela K, Panijpan B, Triampo W, Triampo D
  • Agar 그래프트 폴리아크릴산 겔의 흡수능 최적화
Abstract
Crosslinked agar-g-poly(acrylic acid)(x-agar-g-PAA) superabsorbent with a water absorbency (QH2O) 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 ℃.

Keywords: crosslinked agar-g-poly(acrylic acid); water absorbency; solution polymerization

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This Article

  • 2008; 32(6): 537-543

    Published online Nov 25, 2008

  • Received on Jun 2, 2008
  • Accepted on Aug 19, 2008