Investigation of Carbon Dioxide and Nitrogen Gases Permeability through PEBAX 1657/PEG/graphene Oxide Nanoparticle Mixed Matrix Membrane
DOI:
https://doi.org/10.11113/jamst.v29n3.319Keywords:
Mixed matrix membrane, PEBAX, Graphene oxide nanoparticle, Permeability, SelectivityAbstract
This study investigated gas permeation of neat and blend polyether block amide (PEBAX) 1657 membranes. Polyethylene glycol (PEG) and graphene oxide (GO) were added to PEBAX membrane matrix at different concentration to study their effects on the morphology, permeability and selectivity of the membranes. The prepared membranes were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD). The permeabilities of pure gases CO2 and N2 were carried out using a constant pressure-variable volume method. The influence of PEBAX 1657 membranes with different weight fractions of PEG and GO on the gas permeation performance were studied. The modified membrane with PEBAX/PEG (40 wt.%) displayed the optimum gas separation performance with a CO2 permeability of 103.9 Barrer and selectivity of 56.3 for the CO2/N2 gas pair at 10 bar and room temperature. The permeability of this membrane was twofold compared to the pristine PEBAX, under the same temperature and pressure conditions, showing promising prospects for CO2 capture.
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