Cation-Exchange Fabric Prepared by Electron Beam- Induced Graft Copolymerization of Binary Monomer Mixture

摘要

Applying the electron-beam preirradiation method in air the cation -exchange fabric (CEF) containing sulfonic acid (R-SO_3H) groups was prepared by graft copolymerization of sodium styrenesulfonate with acrylic acid onto non woven polypropylene fabric. The effect of reaction conditions on the grafting yield and reaction mechanism was examined. The ion-exchange properties towards Cu(II) and Co(II) ions of the CEF were investigated depending on the form of the CEF and a pH of the solution. It was found that the synthesized CEF contains both strong acid groups (R-SO_3H) and weak acid (R-COOH) groups in almost equal proportion. The utilization of the CEF in Na~+ form allows to make the best use of its ion-exchange capacity.