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.
Full text not available from this repository.Abstract
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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