Polybenzimidazole is well known for having a superior heat resistance and has good mechanical properties as good as heat resistance. Due to excellent properties, PBI has been used a lot of fields such as gas separation, secondary battery and OSN. The currently produced PBI is synthesized using polyphosphoric acid (PPA) or mixture of P2P5 and CH3CO2H as solvents. However, these solvents are very acidic and can be difficult to produce in large quantities. In this work, meta-Polybenzimidazole(m-PBI) is prepared in mild condition using DMAc. Also, this work includes controlling morphology of the membrane according to concentrations or manufacturing conditions. The membranes were prepared via the non-solvent induced phase separation method. The polymer solutions were cast on a non-woven fabric using casting knife. Also, this membrane can be prepared by electro-spinning. Electro-spinning can make highly porous membrane consisted of nanofibers with the small diameters and overall porous structure. To observe morphology, scanning electron microscope (SEM) was used.

Mild condition produced m-PBI with various types of membranes

2019 Fall National Meeting

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