Mixed Matrix Membranes Based on Torlon® and ZIF-8 for High-Temperature, Size-Selective Gas Separations
Torlon<sup>®</sup> is a thermally and plasticization-resistant polyamide imide characterized by low gas permeability at room temperature. In this work, we aimed at improving the polymer performance in the thermally-enhanced He/CO<sub>2</sub> and H<sub>2</sub&...
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| Format: | Article |
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Multidisciplinary Digital Publishing Institute
2022
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| Online Access: | https://hdl.handle.net/1721.1/138781 |
| _version_ | 1811074656574111744 |
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| author | De Pascale, Matilde Benedetti, Francesco Maria Lasseuguette, Elsa Ferrari, Maria-Chiara Papchenko, Kseniya Degli Esposti, Micaela Fabbri, Paola De Angelis, Maria Grazia |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering De Pascale, Matilde Benedetti, Francesco Maria Lasseuguette, Elsa Ferrari, Maria-Chiara Papchenko, Kseniya Degli Esposti, Micaela Fabbri, Paola De Angelis, Maria Grazia |
| author_sort | De Pascale, Matilde |
| collection | MIT |
| description | Torlon<sup>®</sup> is a thermally and plasticization-resistant polyamide imide characterized by low gas permeability at room temperature. In this work, we aimed at improving the polymer performance in the thermally-enhanced He/CO<sub>2</sub> and H<sub>2</sub>/CO<sub>2</sub> separations, by compounding Torlon<sup>®</sup> with a highly permeable filler, ZIF-8, to fabricate Mixed Matrix Membranes (MMMs). The effect of filler loading, gas size, and temperature on the MMMs permeability, diffusivity, and selectivity was investigated. The He permeability increased by a factor of 3, while the He/CO<sub>2</sub> selectivity decreased by a factor of 2, when adding 25 wt % of ZIF-8 at 65 °C to Torlon<sup>®</sup>; similar trends were observed for the case of H<sub>2</sub>. The MMMs permeability and size-selectivity were both enhanced by temperature. The behavior of MMMs is intermediate between the pure polymer and pure filler ones, and can be described with models for composites, indicating that such materials have a good polymer/filler adhesion and their performance could be tailored by acting on the formulation. The behavior observed is in line with previous investigations on MMMs based on glassy polymers and ZIF-8, in similar conditions, and indicates that ZIF-8 can be used as a polymer additive when the permeability is a controlling aspect, with a proper choice of loading and operative temperature. |
| first_indexed | 2024-09-23T09:53:17Z |
| format | Article |
| id | mit-1721.1/138781 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:53:17Z |
| publishDate | 2022 |
| publisher | Multidisciplinary Digital Publishing Institute |
| record_format | dspace |
| spelling | mit-1721.1/1387812023-04-14T18:21:14Z Mixed Matrix Membranes Based on Torlon® and ZIF-8 for High-Temperature, Size-Selective Gas Separations De Pascale, Matilde Benedetti, Francesco Maria Lasseuguette, Elsa Ferrari, Maria-Chiara Papchenko, Kseniya Degli Esposti, Micaela Fabbri, Paola De Angelis, Maria Grazia Massachusetts Institute of Technology. Department of Chemical Engineering Torlon<sup>®</sup> is a thermally and plasticization-resistant polyamide imide characterized by low gas permeability at room temperature. In this work, we aimed at improving the polymer performance in the thermally-enhanced He/CO<sub>2</sub> and H<sub>2</sub>/CO<sub>2</sub> separations, by compounding Torlon<sup>®</sup> with a highly permeable filler, ZIF-8, to fabricate Mixed Matrix Membranes (MMMs). The effect of filler loading, gas size, and temperature on the MMMs permeability, diffusivity, and selectivity was investigated. The He permeability increased by a factor of 3, while the He/CO<sub>2</sub> selectivity decreased by a factor of 2, when adding 25 wt % of ZIF-8 at 65 °C to Torlon<sup>®</sup>; similar trends were observed for the case of H<sub>2</sub>. The MMMs permeability and size-selectivity were both enhanced by temperature. The behavior of MMMs is intermediate between the pure polymer and pure filler ones, and can be described with models for composites, indicating that such materials have a good polymer/filler adhesion and their performance could be tailored by acting on the formulation. The behavior observed is in line with previous investigations on MMMs based on glassy polymers and ZIF-8, in similar conditions, and indicates that ZIF-8 can be used as a polymer additive when the permeability is a controlling aspect, with a proper choice of loading and operative temperature. 2022-01-03T17:55:07Z 2022-01-03T17:55:07Z 2021-12-15 2021-12-23T15:06:51Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/138781 Membranes 11 (12): 982 (2021) PUBLISHER_CC http://dx.doi.org/10.3390/membranes11120982 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ application/pdf Multidisciplinary Digital Publishing Institute Multidisciplinary Digital Publishing Institute |
| spellingShingle | De Pascale, Matilde Benedetti, Francesco Maria Lasseuguette, Elsa Ferrari, Maria-Chiara Papchenko, Kseniya Degli Esposti, Micaela Fabbri, Paola De Angelis, Maria Grazia Mixed Matrix Membranes Based on Torlon® and ZIF-8 for High-Temperature, Size-Selective Gas Separations |
| title | Mixed Matrix Membranes Based on Torlon® and ZIF-8 for High-Temperature, Size-Selective Gas Separations |
| title_full | Mixed Matrix Membranes Based on Torlon® and ZIF-8 for High-Temperature, Size-Selective Gas Separations |
| title_fullStr | Mixed Matrix Membranes Based on Torlon® and ZIF-8 for High-Temperature, Size-Selective Gas Separations |
| title_full_unstemmed | Mixed Matrix Membranes Based on Torlon® and ZIF-8 for High-Temperature, Size-Selective Gas Separations |
| title_short | Mixed Matrix Membranes Based on Torlon® and ZIF-8 for High-Temperature, Size-Selective Gas Separations |
| title_sort | mixed matrix membranes based on torlon r and zif 8 for high temperature size selective gas separations |
| url | https://hdl.handle.net/1721.1/138781 |
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