Abstract
Fibrous metal adsorbent was prepared by radiation-induced graft polymerization of glycidyl methacrylate onto a polylactic acid (PLA) nonwoven fabric and its subsequent modification based on ring opening of epoxides with disodium iminodiacetate (IDA-Na) . The degree of grafting of PLA fabric can be controlled in the range of up to 225% by optimizing the grafting conditions such as reaction time, preirradiation dose, monomer concentration and reaction temperature. The optimal IDA group density of the prepared adsorbent was 500 μmol/g-adsorbent, and its selectivity for metal ions was Cu2+>Pb2+>Ni2+>Zn2+>Cd2+>Co2+>Ca2+>Mg2+.
