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Mixed‐Matrix Membranes Formed from Multi‐Dimensional Metal–Organic Frameworks for Enhanced Gas Transport and Plasticization Resistance
Author(s) -
Chi Won Seok,
Sundell Benjamin J.,
Zhang Ke,
Harrigan Daniel J.,
Hayden Steven C.,
Smith Zachary P.
Publication year - 2019
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201900623
Subject(s) - materials science , membrane , metal organic framework , nucleation , barrer , polymer , chemical engineering , percolation (cognitive psychology) , nanoparticle , nanotechnology , plasticizer , selectivity , percolation threshold , gas separation , chemistry , composite material , organic chemistry , adsorption , electrical resistivity and conductivity , catalysis , biochemistry , electrical engineering , neuroscience , engineering , biology
Mixed‐matrix membranes (MMMs) formed by incorporating metal–organic frameworks (MOFs) into polymers have a general limitation in that the MOFs are typically formed into rather simple dimensionalities (such as 1D, 2D, or 3D). Each design approach has intrinsic—albeit independent—benefits, such as network percolation (1D), access to high‐aspect ratios (2D), and ease of processability (3D). However, a design strategy is needed to combine multiple dimensionalities and, thereby, access the full range of transport and compositing benefits of these high‐performance materials. Herein, a facile method to form multi‐dimensional HKUST‐1 nanoparticles is introduced by using a modulator to tune the MOF nucleation and growth mechanism. At 30 wt % multidimensional MOF loading, the MMM shows CO 2 permeabilities of approximately 2500 Barrer, which represents a 2.5‐fold increase compared to that of a pure polymer without a large loss of selectivity for CO 2 /CH 4 and CO 2 /N 2 . Additionally, almost no plasticization pressure response is observed for CO 2 up to 750 psi, suggesting an unusual stability to high activity feeds.