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

Nasir, Nur' Adilah Abdul and Alshaghdari, Ameen Gabr Ahmed 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, DOI https://doi.org/10.1515/polyeng-2020-0316.

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Efficient purification technology is crucial to fully utilize hydrogen (H-2) as the next generation fuel source. Polyimide (PI) membranes have been intensively applied for H-2 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 H-2 and carbon dioxide (CO2) gas permeation are conducted on the polymer blends to find the best formulation for membrane composition for effective H-2 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 H-2/CO2 selectivity by 88.9%. Moreover, similar membrane has demonstrated the best performance as it has surpassed Robeson's upper bound curve for H-2/CO2 gas pair performance. Therefore, this finding is significant towards the development of H-2-selective membranes with improved performance.

Item Type: Article
Funders: Universiti Malaya (GPF056A-2018), Universiti Malaya (GPF065A-2018), Universiti Malaya (RU019Q-2017)
Uncontrolled Keywords: Crosslinking; gas separation; Hydrogen; Membrane
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering > Department of Chemical Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 10 Aug 2022 04:23
Last Modified: 10 Aug 2022 04:23
URI: http://eprints.um.edu.my/id/eprint/28451

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