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Preparation of asymmetric polysulfone/polyimide blended membranes for CO2 separation

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Abstract

Asymmetric Flat sheet polysulfone-polyimide (PSF-PI) blended polymeric membranes (with PI content from 5–20%) have been fabricated following phase inversion technique. The membranes have been thoroughly characterized by the measurement of porosity, mechanical properties and also by SEM, FTIR and DSC analyses. With the increase in the PI content, the mechanical properties of the membranes, like Young’s modulus, tensile strength and elongation at break, increased. SEM investigations revealed that the surfaces of fabricated blended membranes possessed adequate homogeneity and their cross-sections showed non-porous top and diminutive porous substructure. From DSC analyses it has been observed that different compositions of the blended membranes exhibited single glass transition temperatures, implying proper compatibility of the polymers. The permeance of CO2 and CH4 through the membrane increased with the increase in PI content and it gradually decreased with the increase in the feed pressure in the range of 2–10 bar. Under the present investigation, the membrane with 20% PI content exhibited the maximum selectivity for the separation of CO2/CH4 gas mixes.

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Authors and Affiliations

  1. Department of Chemical Engineering, Universiti Teknologi PETRONAS, Tronoh, 31750, Malaysia

    Sikander Rafiq, Zakaria Man, Abdulhalim Maulud & Nawshad Muhammad

  2. Ceramic Engineering Division, Govt. College of Engineering and Ceramic Technology, West Bengal University of Technology, 73, A.C. Banerje Lane, Kolkata, 700010, India

    Saikat Maitra

  3. Chemical Engineering Department, King Khalid University, Abha, Kingdom of Saudi Arabia

    Farooq Ahmad

Authors
  1. Sikander Rafiq
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  2. Zakaria Man
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  3. Saikat Maitra
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  4. Abdulhalim Maulud
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  5. Farooq Ahmad
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  6. Nawshad Muhammad
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Correspondence to Sikander Rafiq.

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Rafiq, S., Man, Z., Maitra, S. et al. Preparation of asymmetric polysulfone/polyimide blended membranes for CO2 separation. Korean J. Chem. Eng. 28, 2050–2056 (2011). https://doi.org/10.1007/s11814-011-0053-1

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  • DOI: https://doi.org/10.1007/s11814-011-0053-1

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