| 초록 |
Using the radiation grafting technique, polyketone was graft copolymerized with vinyl benzyl chloride (VBC). Fourier-transform infrared (FTIR) spectroscopy was used to characterize the grafted membrane and aminated membrane. The water uptake (W.U), ion exchange capacity (IEC) and electrical resistance (E.R) of the membrane were measured to evaluate the physical properties of prepared membranes. The prepared membranes were applied to the membrane capacitive deionization process (MCDI), in which their salt removal rates were evaluated and compared to CDI (capacitive deionization). The degree of grafting increased from 13.05% to 62.5% as the irradiation dose and the monomer concentration increased. The water uptake ranged from 11.11% to 19.5%. The ion-exchange capacity was 0.34 meq/g to 1.1 meq/g, and the electrical resistance had values ranging from 8.48 Ω‧cm2 to 1.4 Ω‧cm2. The electrical resistance decreased as the ion-exchange capacity was increased. |
