A cellulose acetate/multi-walled carbon nanotube mixed matrix membrane for CO2/N2separation

Ahmad, A. L.; Jawad, Z. A.; Low, S. C.; Zein, S. H.S.

Abstract

Carbon dioxide (CO 2 ) emissions have been rising indiscriminately and are becoming a major contributor to Earth's greenhouse effect. One of the most promising means of separating the hazardous CO 2 gas is to develop a cost effective and high-performance CO 2 separation membrane. From the wide range of membrane materials available, mixed matrix membrane (MMM) technology has shown the most promising results. In this study, MMMs were synthesized from cellulose acetate (CA) with multi-walled carbon nanotubes (MWCNTs) using the wet phase inversion technique. The results shown that MMMs with functionalized MWCNTs (MWCNTs-F) demonstrated the enhance permeance and selectivity towards the separation of CO 2 /nitrogen (N 2 ). Thus, different loadings of MWCNTs-F into MMM were further investigated to interpret the physical morphologies and functionalities of MMMs, which enable the sepa ration of CO 2 /N 2 in a specific manner. Gas permeation measurements showed excellent MMM performances in terms of permeance and selectivity at 0.1wt% loadings of MWCNTs-F. This superior performance was due to the homogeneous dispersion between the MWCNTs-F and the CA matrix, which increased the sufficient free volumes between the polymer chains and enlarged the polymer/nanofiller interface, as confirmed by the X-ray diffraction results. © 2013 Elsevier B.V.

Citation

Ahmad, A. L., Jawad, Z. A., Low, S. C., & Zein, S. H. (2014). A cellulose acetate/multi-walled carbon nanotube mixed matrix membrane for CO2/N2separation. Journal of membrane science, 451, 55-66. https://doi.org/10.1016/j.memsci.2013.09.043

• Journal Article Type: Article
• Acceptance Date: Sep 23, 2013
• Online Publication Date: Sep 29, 2013
• Publication Date: Feb 1, 2014
• Deposit Date: Jul 6, 2020
• Journal: Journal of Membrane Science
• Print ISSN: 0376-7388
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 451
• Pages: 55-66
• DOI: https://doi.org/10.1016/j.memsci.2013.09.043
• Keywords: Gas separation; Mixed matrix membrane; Multi-walled carbon nanotubes (MWCNTs); Functionalization; Loadings of MWCNTs
• Public URL: https://hull-repository.worktribe.com/output/549825
• Publisher URL: https://www.sciencedirect.com/science/article/abs/pii/S0376738813007680?via%3Dihub