Graft copolymerization of Diallylamine onto starch for water treatment use characterization, removal of Cu (II) cations and antibacterial activity

Abstract

Cyclopolymerization of diallylamine (DAA) onto starch backbone was studied. The graft copolymerization (St-g-DAA) occurred using redox initiators (potassium persulfate/sodium bisulfite). The graft parameters have been studied to obtain the maximum percentage graft. The percentage of graft reached 56%. The copolymer’s structure was characterized by 13CNMR spectrometer. The thermal property of the synthesized copolymer was investigated to adjust the copolymer to water treatment, which involved the removal of Cu (II) ions from aqueous solution. The removal of cations was confirmed by X-Ray diffraction (XRD) and Emission scanning electron micrograph (ESEM). Also, the (St-g-DAA) showed better antibacterial activity than native starch.