| 초록 |
This paper presents the synthesis and characterization of new Acid-Base polymer blend membranes. A novel polymeric base is synthesized from 1,4,5,8-naphthalenetetracarboxylic dianhydride, 2-bis [4-(4-aminophenoxy)phenyl] hexafluoropropane and diaminoacrydine hemisulfate where the diaminoacrydine hemisulfate contribute the tertiary nitrogen groups to the polyimide backbone. This base polyimide is blended with a polyimide having sulfonic acid group in the main chain. The sulfonated polyimide is synthesized from 1,4,5,8-naphthalene-tetracarboxylic dianhydride (NTDA), 4,4’-diaminobiphenyl 2,2’-disulfonic acid (BDSA), 2-bis [4-(4-aminophenoxy)phenyl] hexafluoropropane (HFBAPP). Various polyimide blends having different molar ratio of sulfonic acid group and acrydine group are synthesized and they are characterized for thermal stability, ion exchange capacity, water uptake, hydrolytic stability and proton conductivity. |
