Cyclodextrin edge functionalized graphene oxide modified poly (phthalazinone ether ketone) composite membrane with enhanced properties for anion exchange membrane

摘要

Composite membranes have shown promising advantages over alkaline doped membranes when used as fuel cells separation membrane. A series of poly(phthalazinone ether ketone) (PPEK) with different loading of quatemary ammonium groups modified cyclodextrins functional graphene oxide (QA-CD beta@GO) composite membrane were synthesized by self-assembling. The prepared composite membranes exhibited good thermal stability and enhanced mechanical properties. Meanwhile, the 10% QA-CD beta@GO/PPEK membranes exhibited an acceptable hydroxide conductivity of 42.37 mS.cm(-1) at 80 degrees C and alkaline stability for 400 h. In addition, the swelling ratio of the composite membranes was lower than 20%. Furthermore, the results revealed that graphene oxide composite membrane could be used as anion exchange membrane.