▎ 摘　　要

In this work, thin film nanocomposite (TFN) membranes of super-glassy polymer PIM-1 containing zeolitic imidazolate framework-8 (ZIF-8)/graphene oxide (GO) composites (ZG) have been prepared by dip-coating onto water pre-impregnated polyvinylidene fluoride (PVDF) substrates. Higher flux and improved separation factors as compared to bare PIM-1 thin film composite (TFC) membranes have been achieved in organophilic perva-poration; for an aqueous feed solution with 5 wt% of butanol at 65 degrees C, a total permeate flux of 7.9 +/- 0.69 kg m - 2h-1 and a separation factor (beta BtOH/H2O) of 29.9 +/- 1.99 have been obtained with a TFC membrane containing 0.5 wt% of ZG filler. The pervaporation separation index (PSI) of this membrane (228 kg m - 2h-1) is amongst the highest values reported in the literature. This excellent performance is attributed to the formation of a defect-free PIM-1 active layer (<1 mu m) and the hydrophobic nature of the ZG fillers.