Miscible blend polyethersulfone/polyimide asymmetric membrane crosslinked with 1,3-diaminopropane for hydrogen separation

Abdul Nasir, Nur' Adilah and Ahmed Alshaghdari, Ameen Gabr and Mohd Junaidi, Mohd Usman and Hashim, Nur Awanis and Rabuni, Mohamad Fairus and Rohani, Rosiah (2021) Miscible blend polyethersulfone/polyimide asymmetric membrane crosslinked with 1,3-diaminopropane for hydrogen separation. Journal of Polymer Engineering, 41 (7). pp. 607-614. ISSN 0334-6447

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Official URL: https://doi.org/10.1515/polyeng-2020-0316

Abstract

Efficient purification technology is crucial to fully utilize hydrogen (H2) as the next generation fuel source. Polyimide (PI) membranes have been intensively applied for H2 purification but its current separation performance of neat PI membranes is insufficient to fulfill industrial demand. This study employs blending and crosslinking modification simultaneously to enhance the separation efficiency of a membrane. Polyethersulfone (PES) and Co-PI (P84) blend asymmetric membranes have been prepared via dry-wet phase inversion with three different ratios. Pure H2 and carbon dioxide (CO2) gas permeation are conducted on the polymer blends to find the best formulation for membrane composition for effective H2 purification. Next, the membrane with the best blending ratio is chemically modified using 1,3-diaminopropane (PDA) with variable reaction time. Physical and chemical characterization of all membranes was evaluated using field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR). Upon 15 min modification, the polymer membrane achieved an improvement on H2/CO2 selectivity by 88.9%. Moreover, similar membrane has demonstrated the best performance as it has surpassed Robeson's upper bound curve for H2/CO2 gas pair performance. Therefore, this finding is significant towards the development of H2-selective membranes with improved performance. © 2021 Walter de Gruyter GmbH, Berlin/Boston 2021.

Item Type: Article
Uncontrolled Keywords: crosslinking; gas separation; hydrogen; membrane
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 21 Sep 2021 05:00
Last Modified: 21 Sep 2021 05:00
URI: http://eprints.um.edu.my/id/eprint/26035

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