Chitosan-Acrylamide Graft Copolymers and Properties of Flocculating
Zhang Guanghua¹，Xie Shuhui²,Guo Yan¹,Lu Fengji¹
(1.School of Environmental and Chemical Engineering,Xi'an Jiaotong University,Xi'an 710049,China;2.Department of Chemical Engineering,Northwest Institute of Light Industry)

Abstract：The synthesis and properties of the graft copolymer of acrylamide and chitosan (CAM)were studied. The 50%~99% acrylamide in graft copolymers were made with nitrogen and ammonium persulfate as indicator. The properties of flocculating, absorption of heavy metal ions, zeta potential and application for wasted water in papermaking were tested. The results show that the graft copolymer CAM are negative polymer electrolytes, and the absorption rate of the graft copolymer for Pb(Ⅱ),Cd(Ⅱ) ions is much higher than that of the chitosan. The graft copolymer also has strong ability of flocculation for wasted water in papermaking.
Keywords：chitosan;acrylamide;graft copolymer;flocculation;heavy metal ions;wasted water