Interest in creating membranes that can separate gases has intensified in recent years owing, in large part, to climate change. Specifically, the need for separating CO and N from flue gas in an economically viable fashion is now considered urgent. This Perspective highlights two recent developments from my laboratory─defect repair of polyelectrolyte multilayers (PEMs) using micellar solutions of sodium dodecyl sulfate (SDS) and the surface modification of a highly permeable polymer, poly[1-(trimethylsilyl) propyne] (PTMSP)─which I believe have significant implications not only for this CO/N problem but also for the ever-growing area of layer-by-layer (LbL) thin films. A brief mention is also made of past efforts that have been aimed at creating hyperthin membranes from porous surfactants and from PEMs with a view toward gas separations.
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| http://dx.doi.org/10.1021/acs.langmuir.2c00548 | DOI Listing |
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Creating Hyperthin Membranes for Gas Separations.
Langmuir
April 2022
Department of Chemistry, Lehigh University, Bethlehem, Pennsylvania 18015 United States.
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