Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Preparation and Super-Water-Absorbency of Poly(sodium acrylate-co-acrylamide-co-2-hydroxyethyl acrylate)

Poly(sodium acrylate-co-acrylamide-co-2-hydroxyethyl acrylate)의 제조와 고흡수 특성

  • Zhang Yuhong (Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, & School of Chemistry and Chemical Engineering, Hubei University) ;
  • Deng Min (Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, & School of Chemistry and Chemical Engineering, Hubei University) ;
  • He Peixin (Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, & School of Chemistry and Chemical Engineering, Hubei University)
  • Published : 2006.07.01
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Abstract

Super water-absorbent resins were prepared by inverse suspension copolymerization of sodium acrylate, acrylamide and 2-hydroxyethyl acrylate using N, N'-methylene-bis-acrylamide as cross-linker. For the suspension copolymerization, monohexadecyl phosphate was employed as the dispersing agent, cyclohexane as the dispersing medium and potassium persulfate as the initiator. The dependence of water-absorption capacity on the amount of crosslinking agent, oil/water ratio, degree of neutralization and the composition of the copolymer were systematically investigated. Furthermore, the swelling kinetics of the super water-absorbent copolymer was carried out. The absorption of the resins is more than 1800 g/g for deionized water and 100 g/g for 0.9% NaCl solution, respectively. The copolymers showed an increased salt resistance and enhanced water retention of soil.

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References

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