| 초록 |
In this study, PVDF Was dehydrofluorinated using an alkaline treatment and modified using 4-vinyl benzyl chloride to prepare a PVDF-g-VBC copolymer. A solution of the PVDF-g-VBC copolymer was anion exchanged using a quaternary ammonium reaction. In addition, an ion exchange membrane was prepared using a casting method. The membrane was made by heat treatment. Raman and FT-IR were performed to analyze molecular structure. The water uptake was measured using weight method , ion exchange capacity was measured using titration and electrical resistance of the membrane was measured by using LCR meter. Water uptake of the PVDF-g-VBC ion exchange memebrane ranged from 12.5% to 56.2%, and the results were lower than that of AMX(30%). The ion exchange capacity and electrical resistance range were 0.39-1.31 meq/g and from 15.50 to 2.00Ω cm2. When the anion exchange membrane was applied to MCDI process, an excellent salt removal rate of 79.4% was achieved, which was higher than CDI process, 27.8% |
