| 초록 |
In this study, we synthesized two polystyrene (PS) block copolymers, such as poly(styrene-b-styrenesulfonic acid sodium salt) (PS-b-PSSNa) and phosphorylated poly(vinyl alcohol-b-styrene) (P-PVA-b-PS) by controlled/living radical polymerization. Then, the block copolymers were blended with poly(2,6-dimethyl-1,4-phenylene oxide) (MPPO) respectively, for fuel cell membranes. The block copolymers were confirmed by 1H-NMR, FT-IR, and titration, and the performance of blend membranes was characterized by ion conductivity, methanol permeability, and thermal stability. The PS-b-PSSNa/MPPO blend membrane shows higher ion conductivity (0.053 S/cm), low methanol permeability and good thermal stability, and the ion conductivity of P-PVA-b-PS/MPPO blend membrane shows 0.0065 S/cm at 60℃. |
