GRAFT COPOLYMERIZATION ONTO CHITOSAN-I. GRAFTING OF ETHYLMETHACRYLATE USING CERIC AMMONIUM NITRATE AS AN INITIATOR
Mohammad M. Fares *
Department of Applied chemistry, Jordan University of Science & Technology, P.O. box: 3030, 22110, Irbid, Jordan
Faculty of Pharmacy, Jordan University of Science & Technology, P.O. box: 3030, 22110,
Grafting of ethylmethacrylate (EMA) onto chitosan in aqueous medium initiated by ceric ammonium nitrate (CAN) under N2 atmosphere has been studied. The effect of monomer concentration, initiator concentration, polymerization temperature, polymerization time and material to liquor ratio have been studied in terms of %GE and %Add-on. The optimum conditions obtained for the grafting of EMA on 1.0 g chitosan were: [CAN] = 0.0018 mol/L, [EMA]= 0.025 mol/L, Temperature= 30 °C, Time=180 min, and material to liquor ratio = 1:7. The graft copolymer was characterized by FTIR, x-ray diffraction (XRD) for the crystallinity of the copolymer and TGA for thermal stability of the copolymer.