| 초록 |
Sulfonated poly(arylene ether sulfone) copolymers have various merits such as low cost, easy tunable property, and high gas barrier property. But, its critical weakness to attacks under harsh fuel cell operation conditions. A solution is to apply a reinforced membrane concept where copolymers are filled in support films. But, it's difficult to fill copolymers into the films. In this study, a SPAES-50 copolymer nanodispersion is fabricated using a supercritical fluid technique, and used as a polymer material to be impregnated into porous PTFE support films. The resulting membranes show extremely high proton conductivity (~0.6 S/cm@90 oC) in liquid water. |
