| Download | - View accepted manuscript: Gas separation transport modeling for PDMS coatings on PEI-PEG IPN membranes (PDF, 778 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1016/j.memsci.2010.05.059 |
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| Author | Search for: Dal-Cin, Mauro M.1; Search for: Darcovich, K.1; Search for: Saimani, Sundar1; Search for: Kumar, Ashwani1 |
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| Affiliation | - National Research Council of Canada. NRC Institute for Chemical Process and Environmental Technology
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| Format | Text, Article |
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| Subject | Gas separation; Bi-layer system; CFD; Selectivity; Modeling; Simulation |
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| Abstract | A caulking layer is frequently applied to gas separation membranes to alleviate the effects of structural defects. Caulking materials have high gas diffusivities, so as not to hinder the performance of the gas separation layer. Despite these considerations, for some bi-layer systems unaffected by plasticization, the mixed gas selectivity has been observed to be significantly lower than selectivity values calculated from pure gas permeabilities. The present object is to model and simulate two-layer caulked gas separation membranes at the fundamental level to discover the mechanistic basis for the observed behaviour. To this end, a transport based model considering intrinsic material properties was developed to simulate gas separation for a system of CO2 and N2 diffusing across a caulking layer of polydimethyl siloxane (PDMS) and then a polyetherimide-polyethylene glycol interpenetrating network (PEI-PEG IPN) membrane. The model was able to account for flux declines in mixed gas systems greater than those predicted by conventional series resistance models, such as have been observed experimentally. |
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| Publication date | 2010 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 52200 |
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| NPARC number | 16352291 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 162e8f0c-f613-4658-8a04-1c858451c5ef |
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| Record created | 2010-11-09 |
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| Record modified | 2020-04-17 |
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