Abstract
Mixed-matrix gas separation membranes were prepared by embedding various content of halloysite nanotubes (HNTs) (0, 0.5, 1, 1.5, and 2 wt%) within poly (ether-block-amide) matrix. XRD, FT-IR, TGA, and SEM analyses were conducted to study crystal structure, chemical bonds changes, thermal resistance, and cross-sectional morphology of the resultant membranes, respectively. Permeability values of pure CH4 and CO2 gases through the synthesized neat and mixed-matrix membranes (MMMs) were experimentally determined at constant temperature (25 °C) and several pressures (4, 6, 8, and 10 bar). The obtained results exhibited improved CO2 permeability of the MMMs comparing with the pristine Pebax membrane. As an example, at a pressure of 4 bar, raising the incorporated HNTs loading from 0 to 2 wt% enhanced the permeability of CO2 from 76.50 to 101.23 Barrer.
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Ahmadi, S.M.A., Mohammadi, T. & Azizi, N. Effect of halloysite nanotubes incorporation on morphology and CO2/CH4 separation performance of Pebax-based membranes. Korean J. Chem. Eng. 38, 104–113 (2021). https://doi.org/10.1007/s11814-020-0650-y
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DOI: https://doi.org/10.1007/s11814-020-0650-y