[9p-S321-1~15] 1.4 Energy conversion, storage, resources and environment

▲ [9p-S321-5] Radiation graft copolymerization of phosphorous containing monomer on CMC-based hydrogel for metal adsorption

〇(D)Tran Thu Hong¹, Okabe Hirotaka¹, Hidaka Yoshiki¹, Hara Kazuhiro¹ (1.Kyushu University)

Keywords:Gamma irradiation synthesis, Hydrogel, Metal adsorption

The aim of this study is radiation introduction of phosphoric groups on a type of polysaccharide, namely carboxymethyl cellulose (CMC) which is abundantly found in nature. CMC is renewable, bio-degradable, bio-compatible, CO₂ neutral and therefore very promising in terms of “green chemistry”. Bis[2-(Methacryloyloxy)Ethyl] Phosphate (BMEP) and its derivatives are capable of hydrogen bonding and has a strong affinity for a broad variety of inorganic surfaces and metal ions. BMEP was used as a graft copolymerization agent to functionalize CMC-based hydrogel and improve its metal adsorption capacity. Free radical polymerization has been applied to attach BMEP to CMC polysaccharide by gamma rays. The modified CMC-based hydrogels were characterized by thermal analysis, microscopy, water uptake and evaluated their use as metal adsorption materials.