Copolyimide Brushes as a Component of a Hybrid Poly(phenylene Oxide) Membrane for Controlling Gas Separation: Effect of Water, Methanol, and Hexane Vapors
The effect of water, methanol, and hexane vapors on gas permeability was studied in a hybrid membrane containing 5 wt% copolyimide brushes with poly(methyl methacrylate) side chains (PI-g-PMMA) in a poly(phenylene oxide) (PPO) matrix, and in a pristine PPO membrane. These membranes in the form of de...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/13/9/805 |
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| author | Nadezhda Tian Alexandra Pulyalina Ilya Faykov Iosif Gofman Konstantin Zolotovsky Galina Polotskaya |
| author_facet | Nadezhda Tian Alexandra Pulyalina Ilya Faykov Iosif Gofman Konstantin Zolotovsky Galina Polotskaya |
| author_sort | Nadezhda Tian |
| collection | DOAJ |
| description | The effect of water, methanol, and hexane vapors on gas permeability was studied in a hybrid membrane containing 5 wt% copolyimide brushes with poly(methyl methacrylate) side chains (PI-g-PMMA) in a poly(phenylene oxide) (PPO) matrix, and in a pristine PPO membrane. These membranes in the form of dense nonporous films were further examined by atomic force microscopy (AFM) and scanning electron microscopy (SEM), as well as by measuring their mechanical and gas transport properties. A gas separation study of the membranes in a dry state and the membranes saturated with water, methanol, and hexane vapors was performed to estimate the effect of each vapor on the H<sub>2</sub>, CO<sub>2</sub>, N<sub>2</sub> permeability and selectivity in the separation of H<sub>2</sub>/N<sub>2</sub> and CO<sub>2</sub>/N<sub>2</sub> pairs. In general, saturation with water, methanol, and hexane vapors caused a decrease in the gas permeability of both membranes. The hybrid membrane containing copolyimide brushes demonstrated enhanced selectivity in the separation of H<sub>2</sub>/N<sub>2</sub> and CO<sub>2</sub>/N<sub>2</sub> pairs. It was found that a special effect of the vapors used for membrane saturation is associated with their molar volume. The solubility and diffusion coefficients of N<sub>2</sub> and CO<sub>2</sub> were obtained by Grand Canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations. |
| first_indexed | 2024-03-10T22:28:19Z |
| format | Article |
| id | doaj.art-bee8b9502a084c599a7438bfcd45002f |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T22:28:19Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-bee8b9502a084c599a7438bfcd45002f2023-11-19T11:54:42ZengMDPI AGMembranes2077-03752023-09-0113980510.3390/membranes13090805Copolyimide Brushes as a Component of a Hybrid Poly(phenylene Oxide) Membrane for Controlling Gas Separation: Effect of Water, Methanol, and Hexane VaporsNadezhda Tian0Alexandra Pulyalina1Ilya Faykov2Iosif Gofman3Konstantin Zolotovsky4Galina Polotskaya5Institute of Chemistry, Saint Petersburg State University, 198504 Saint Petersburg, RussiaInstitute of Chemistry, Saint Petersburg State University, 198504 Saint Petersburg, RussiaInstitute of Chemistry, Saint Petersburg State University, 198504 Saint Petersburg, RussiaInstitute of Macromolecular Compounds, Russian Academy of Sciences, 199004 Saint Petersburg, RussiaInstitute of Chemistry, Saint Petersburg State University, 198504 Saint Petersburg, RussiaInstitute of Chemistry, Saint Petersburg State University, 198504 Saint Petersburg, RussiaThe effect of water, methanol, and hexane vapors on gas permeability was studied in a hybrid membrane containing 5 wt% copolyimide brushes with poly(methyl methacrylate) side chains (PI-g-PMMA) in a poly(phenylene oxide) (PPO) matrix, and in a pristine PPO membrane. These membranes in the form of dense nonporous films were further examined by atomic force microscopy (AFM) and scanning electron microscopy (SEM), as well as by measuring their mechanical and gas transport properties. A gas separation study of the membranes in a dry state and the membranes saturated with water, methanol, and hexane vapors was performed to estimate the effect of each vapor on the H<sub>2</sub>, CO<sub>2</sub>, N<sub>2</sub> permeability and selectivity in the separation of H<sub>2</sub>/N<sub>2</sub> and CO<sub>2</sub>/N<sub>2</sub> pairs. In general, saturation with water, methanol, and hexane vapors caused a decrease in the gas permeability of both membranes. The hybrid membrane containing copolyimide brushes demonstrated enhanced selectivity in the separation of H<sub>2</sub>/N<sub>2</sub> and CO<sub>2</sub>/N<sub>2</sub> pairs. It was found that a special effect of the vapors used for membrane saturation is associated with their molar volume. The solubility and diffusion coefficients of N<sub>2</sub> and CO<sub>2</sub> were obtained by Grand Canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulations.https://www.mdpi.com/2077-0375/13/9/805poly(<i>m</i>-phenylene isophthalamide)mixed matrix membranecomplex modifiergas separationvapor saturation |
| spellingShingle | Nadezhda Tian Alexandra Pulyalina Ilya Faykov Iosif Gofman Konstantin Zolotovsky Galina Polotskaya Copolyimide Brushes as a Component of a Hybrid Poly(phenylene Oxide) Membrane for Controlling Gas Separation: Effect of Water, Methanol, and Hexane Vapors Membranes poly(<i>m</i>-phenylene isophthalamide) mixed matrix membrane complex modifier gas separation vapor saturation |
| title | Copolyimide Brushes as a Component of a Hybrid Poly(phenylene Oxide) Membrane for Controlling Gas Separation: Effect of Water, Methanol, and Hexane Vapors |
| title_full | Copolyimide Brushes as a Component of a Hybrid Poly(phenylene Oxide) Membrane for Controlling Gas Separation: Effect of Water, Methanol, and Hexane Vapors |
| title_fullStr | Copolyimide Brushes as a Component of a Hybrid Poly(phenylene Oxide) Membrane for Controlling Gas Separation: Effect of Water, Methanol, and Hexane Vapors |
| title_full_unstemmed | Copolyimide Brushes as a Component of a Hybrid Poly(phenylene Oxide) Membrane for Controlling Gas Separation: Effect of Water, Methanol, and Hexane Vapors |
| title_short | Copolyimide Brushes as a Component of a Hybrid Poly(phenylene Oxide) Membrane for Controlling Gas Separation: Effect of Water, Methanol, and Hexane Vapors |
| title_sort | copolyimide brushes as a component of a hybrid poly phenylene oxide membrane for controlling gas separation effect of water methanol and hexane vapors |
| topic | poly(<i>m</i>-phenylene isophthalamide) mixed matrix membrane complex modifier gas separation vapor saturation |
| url | https://www.mdpi.com/2077-0375/13/9/805 |
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