Propylene/propane selective mixed matrix membranes with grape-branched MOF/CNT filler

Lin, Rijia and Ge, Lei ORCID: and Diao, Hui and Rudolph, Victor and Zhu, Zhonghua (2016) Propylene/propane selective mixed matrix membranes with grape-branched MOF/CNT filler. Journal of Materials Chemistry A, 4 (16). pp. 6084-6090. ISSN 2050-7488


In this study, we fabricated mixed matrix membranes (MMMs) comprising a novel carbon nanotube/metal–organic framework (MOF) filler for efficient propylene/propane separation. Tomographic focused ion beam scanning electron microscopy was applied to quantitatively evaluate the filler dispersion and filler/polymer interfacial void ratio. The dispersion of ZIF-8 in MMMs was improved by the confined growth of ZIF-8 on the carbon nanotube (CNT) surfaces, yielding a simultaneous enhancement of C3H6 membrane permeability and C3H6/C3H8 selectivity. Excellent adhesion between the synthesized ZIF-8/CNT fillers and polymer matrix is observed, with only 0.086% void volume fraction, even at a high filler loading. The in situ growth of MOFs on CNTs shown here can provide an effective way to design mixed matrix membranes with improved filler dispersion, structural features and separation performance.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version due to publisher copyright policy.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 19 Apr 2017 07:00
Last Modified: 28 Apr 2017 04:00
Uncontrolled Keywords: carbon nanotubes; dispersions; filled polymers; propylene; scanning electron microscopy; void fraction;
Fields of Research (2008): 09 Engineering > 0904 Chemical Engineering > 090404 Membrane and Separation Technologies
Fields of Research (2020): 40 ENGINEERING > 4004 Chemical engineering > 400409 Separation technologies
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
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