Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.memsci.2019.03.088
Title: Plasticization resistance-enhanced CO2 separation at elevated pressures by mixed matrix membranes containing flexible metal-organic framework fillers
Authors: YING YUNPAN 
CHENG YOUDONG 
PEH SHING BO 
LIU GUOLIANG 
Shah, Bhuvan B
Zhai, Linzhi
Zhao Dan 
Keywords: Science & Technology
Technology
Physical Sciences
Engineering, Chemical
Polymer Science
Engineering
Mixed matrix membranes
Metal-organic frameworks
Anti-plasticization
CO2 capture
High pressure gas separation
COMPOSITE HOLLOW-FIBER
GRAPHENE OXIDE
PERFORMANCE
ZIF-8
CH4
Issue Date: 15-Jul-2019
Publisher: ELSEVIER SCIENCE BV
Citation: YING YUNPAN, CHENG YOUDONG, PEH SHING BO, LIU GUOLIANG, Shah, Bhuvan B, Zhai, Linzhi, Zhao Dan (2019-07-15). Plasticization resistance-enhanced CO2 separation at elevated pressures by mixed matrix membranes containing flexible metal-organic framework fillers. JOURNAL OF MEMBRANE SCIENCE 582 : 103-110. ScholarBank@NUS Repository. https://doi.org/10.1016/j.memsci.2019.03.088
Abstract: © 2019 Elsevier B.V. Although precise design has advanced the separation capability of polymer membranes, the inability to maintain their performance under real process conditions involving elevated pressures and moisture has prevented their smooth transition into practical applications. Specifically, plasticization of polymers is a unique challenge to membrane-based CO2 separation. Herein, we show that the dispersion of a flexible metal-organic framework (MOF) within a polymer matrix allows the retention of high gas separation selectivity even at a transmembrane pressure of 12 bar, which is highly desirable for practical applications involving compressed feed streams. The strong interactions between MOF fillers and polymer matrices reduce the chain mobility of polymer, contributing to the enhanced plasticization resistance. X-ray diffraction (XRD) analysis indicates that channel closure of the flexible MOF in polymer is avoided, also suggesting strong MOF-polymer interactions. Importantly, observation of XRD-detectable phase changes in flexible MOFs is a useful strategy to reveal the interactions between flexible MOFs and the matrices.
Source Title: JOURNAL OF MEMBRANE SCIENCE
URI: https://scholarbank.nus.edu.sg/handle/10635/169574
ISSN: 0376-7388
1873-3123
DOI: 10.1016/j.memsci.2019.03.088
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