High purity multi-walled carbon nanotubes: Preparation, characterization and performance as filler materials in co-polyimide hollow fiber membranes

In this work high purity multi wall carbon nanotubes were prepared and used as filler materials in BTDA-TDI/MDI (P84) co-polyimide hollow fiber membranes. The MWCNTs are well dispersed into the hollow fiber matrices and the prepared membranes were crack free. Furthermore, the measurement gas permeance values of He, O2 and N2, increase significantly as the MWCNTs content increases according to linear relations.