Preparation of polyaniline asymmetric hollow fiber membranes and investigation towards gas separation performance

▶ Integrally skinned asymmetric hollow fiber membranes is developed from emeraldine base form of polyaniline (PAni) for gas separation. ▶ Molecular orientation of the polymer shows synergistic effect towards improving the gas performance of the PAni hollow fiber membranes. ▶ PAni based hollow fibers showed a selectivity of 10.2 for O2/N2, 105.6 for H2/N2 and 7.9 for H2/CO2 with the H2 and O2 permeance of about 5.0 and 0.49 × 10−6 cm3 (STP)/cm2 s cmHg, respectively.