Factors Affecting Grafting and Grafting Efficiency in the Preparation of Environment Friendly Flocculant

친환경 응집제의 제조에 있어서 그래프팅 및 그래프팅효율에 영향을 미치는 인자들

  • Min, Seong Kee (Department of Polymer Engineering, Pukyong National University) ;
  • Park, Chan Young (Department of Polymer Engineering, Pukyong National University)
  • 민성기 (부경대학교 공과대학 고분자공학과) ;
  • 박찬영 (부경대학교 공과대학 고분자공학과)
  • Received : 2013.08.01
  • Accepted : 2013.09.09
  • Published : 2014.01.31


With the incorporation of hydrogen peroxide($H_2O_2$) and NaLS as an initiator and emulsifier, acrylic acid monomer was graft copolymerized with sodium alginate prepared from alginic acid, and then the grafted copolymer was confirmed through IR spectrometer. When the amounts of acrylic acid increased the grafting also showed increasing trend. While the contents of hydrogen peroxide was varied in the aqueous sodium alginate solution, the grafting efficiency decreased gradually as the amounts of initiator increased.


Environment friendly;Sodium alginate;Grafting;Grafting efficiency;Flocculant


  1. Hudson Jr., H. E., 1957, Flocculation and flocculation aids. AWWA; 49 : 242.
  2. Gloyna, E. F., 1970, Water Resources Sym., 3, 219.
  3. Deng, Y., Hiroshi, O., 1997, Flocculation and retention of precipitated calcium carbonate by cationic polymeric microparticle flocculants, J. Colloid and Interface Sci., 188, 183-192.
  4. Berlin, A., Kislenko, V. N., 1995, Kinetic models of suspension flocculation by polymers, Colloids and Surfaces A: Physicochem. Eng. Aspects, 104, 67-72.
  5. Kim, K. H., Kim, K. S., Kim, Y. B., 1987, Effect of flocculation of the kaolinite suspension to polymeric flocculants of chitosan system ( I ), Polymer(Korea), 11(3), 261-267.
  6. Hocking, M. B., Klimchuk, K. A., Lowen, S., 1999, Polymeric flocculants and flocculation, J.M.S.-Rev. Macromol. Chem. Phys., C39(2), 177-188.
  7. Singh, R. P., Tridib, T., 2000, High performance flocculating agent based on partially hydrolyzed sodium alginate-g-polyacrylamide, Eur. Polym. J., 36, 1471-1476.
  8. Behl, S., Brij, M. M., Prakash, T. S., 1993, Effect of particle size in flocculation, J. of Colloid and Interface Sci., 158, 511-512.
  9. Odberg, L., Tie, Q. L., 1996, Flow properties of cellulose fiber suspensions flocculated by cationic polyacrylamide, Colloids and Surfaces A : Physicochem. Eng. Aspects, 115, 127-135.
  10. Karmakar, G. P., 1986, Ph D Thesis, IIT, Kharagpur, India.
  11. Barbaro, M., Bertini, V., Marabini, A., Munno, A. D., Picci, N., Pocci, M., 1991, 3,4-(Methylenedioxy)benzyl acrylate/acrylic acid copolymers as selective pH-controlled flocculants for finely divided titanium minerals, Colloids and Surfaces, 60, 413-421.
  12. Bhagat, R. P., Singh, R. P., Tridib, T., 2001, The flocculation performance of grafted sodium alginate and other polymeric flocculants in relation to iron ore slime suspension, Eur. Polym. J., 37, 125-130.
  13. Farrow, J. B., Swift, J. D., 1996, A new procedure for assessing the performance of flocculants, International J. of Mineral Processing, 46, 263-275.
  14. Brian, A. B., Dixon, D. R., 1996, The use of soluble organic polymers in waste treatment, Water Sci. Technol. 34(9), 117-124.
  15. Jarnstrom, L., Lason, L., Rigdahl, M., 1995, Flocculation in kaolin suspensions induced by modified starches 1. Cationically modified starch: effects of temperature and ionic strength, Colloids and Surfaces A : Physicochem. Eng. Aspects, 104, 191-205.
  16. Hamielec, A., Pelton, R., Xiao, H., 1995, Flocculation of polystyrene latex by polyacrylamide-copolyethylene glycol, J. Colloid and Interface Sci., 175, 166-172.
  17. Kurenkov, V. F., Myagchenkov, V. A., Nagel, M. A., 1984, The influence of chemical inhomogeneity of flocculant (copolymer of acrylamide with sodium acrylate) on the rate of sedimentation of ochre suspension, Euro. Polym. J., 20, 779-782.