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Finite element assessment of the potential of platelet-filled polymers for membrane gas separations |
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| Authors: | Olga Guseva Andrei A. Gusev |
| Affiliation: | 1. Materials Simulations GmbH, Bluntschlisteig 1, P.O. Box 624, 8027 Zürich, Switzerland;2. Empa, Swiss Federal Laboratories for Materials Testing and Research, Überlandstrasse 129, 8600 Dübendorf, Switzerland;3. Institute of Polymers, Department of Materials, ETH Zürich, 8093 Zürich, Switzerland |
| Abstract: | We use the finite element method to analyze the role of filler aspect ratio and volume loading on the effective permeability and selectivity of gas-separation membranes consisting of a polymer matrix filled with platelet-shaped molecular sieving particles. On the basis of direct 3D finite element estimates, we develop and validate a quick arithmetic procedure for predicting the effective permeability and selectivity of platelet-filled systems. We use this procedure to show that it is feasible to obtain mixed matrix platelet-filled membranes with effective permselectivities considerably exceeding the upper Robeson's bounds. |
| Keywords: | Gas separation Permeability Permselectivity Mixed matrix membrane Polymer Zeolite |
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