A chitosan-based flocculant prepared with gamma-irradiation-induced grafting.
A natural polymer, chitosan, was modified to prepare an efficient flocculant using grafting method initiated by gamma ray in acid-water solution. A vinyl monomer, acrylamide, was used as the grafted monomer. The graft copolymer obtained was characterized using Fourier transform infrared spectroscopy, X-ray diffraction and thermogravimetric analysis. Effects of acetic acid concentration, total irradiation dose, dose rate and monomer concentration on the grafting percentage were investigated. Flocculation experiment results demonstrated that the graft copolymer produced was significantly superior to chitosan and polyacrylamide (PAM).
Wang
Jian-Ping
JP
Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
Chen
Yong-Zhen
YZ
Zhang
Shu-Juan
SJ
Yu
Han-Qing
HQ
D019342:Acetic Acid / Q000494:pharmacology; D000180:Acrylic Resins / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D004307:Dose-Response Relationship, Radiation; D005427:Flocculation; D005720:Gamma Rays; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014961:X-Ray Diffraction; D000099166:Polyacrylamides
D019342:Acetic Acid; D000180:Acrylic Resins; D048271:Chitosan; D012996:Solutions; D000099166:Polyacrylamides