Incorporating zeolitic imidazolate framework-90 in cellulose triacetate (CTA) for enhanced gas permeation

Abstract Gas separation membranes is largely beholden to the notable breakthroughs in material science as the permselectivity of most of the membranes is still far below the Robeson upper bond. Therefore, in this work, zeolitic imidazolate framework −90 (ZIF-90) particles are introduced into cellulose triacetate polymer matrix (CTA) as filler to fabricate mixed matrix membranes (MMMs). The filler/polymer loading was varied from 0.5 and 1.5 wt.% and based on the SEM images obtained, the fabricated MMMs showed minimum sign of particles agglomeration in the polymer matrix. The overall CO2 permeability of MMM was enhanced up to 1400.0% at 1.5 wt.% ZIF-90 loading compared to pure CTA membrane. Thus, ZIF-90 particles can be considered as a potential filler for the formation of MMM with improved enhanced gas permeation performance, which is potential for its application in gas separations.

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