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

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.

References

  1. F. Zhan, M. Liu, M. Guo, and L. Wu, J. Appl. Polym. Sci., 92, 3417 (2004) https://doi.org/10.1002/app.20361
  2. E. Jabbari and S. Nozari, Eur. Polym. J., 36, 2685 (2000) https://doi.org/10.1016/S0014-3057(00)00044-6
  3. L.-P. Chen, K.-L. Ying, and K.-C. Hsu, J. Appl. Polym. Sci., 92, 2232 (2004) https://doi.org/10.1002/app.13696
  4. L. Xiaofeng, L. Miangui, and H. Peixin, Chinese Journal of Applied Chemistry, 10, 105 (1993)
  5. S. Ma, M. Liu, and Z. Chen, J. Appl. Polym. Sci., 93, 2532 (2004) https://doi.org/10.1002/app.20735
  6. T. Masatoshi, I. Shunsuke, and F. Koichi, et al., Japanese Patent JP62-33190 (1987)
  7. S. Kyoichi, M. Noboru, and T. Kimio, et al., Abura Kagaka (Japanese), 15, 38 (1966)