| 초록 |
PFA(poly(tetrafluoroethylene-perfluoropropylvinylether) grafted polystyrene sulfonic acid (PFA-g-PSSA) membranes were prepared by simultaneous irradiation method, using gamma-radiation from a 60Co source at room temperature in air. The absorbed dose and dose rate ranged from 50-200 kGy and 10kGy/h, respectively. The effect of grafting conditions such as the types of diluent solvent, the irradiation dose and dose rate, as well as the styrene concentration in the grafting solution on the degree of grafting was investigated. The pysico-chemical properties of the PFA-g-PSSA membranes such as the degree of grafting(DOG), ion exchange capacity(IEC), water up take and tensile strength were evaluated. |
