| Summary: | This paper extensively discussed the gaspermeabilities in MMM using theoreticalmodels and the results were compared with the published experimental data. The models considered are: Maxwell model modified Maxwell model, Lewis–Nielsen model, modified Lewis–Nielsen model and Felske model. The selected models were compared based on published experimental data (168 data point) of MMMs, inorganics including zeolites NaA and NaX and neat polymer permeabilities. The results generated based on standard deviation, s and absolute average relative error, %AARE for the models studied show a decreasing order: Lewis–Nielsen model > Maxwell model > modified Lewis–Nielsen model> modified Maxwell model > Felske model. This indicates that the most reliable predictive model in predicting gaspermeability in MMM is Felske model.
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