Modification of Thin Film Composite PVA/PAN Membranes for Pervaporation Using Aluminosilicate Nanoparticles
The effect of the modification of the polyvinyl alcohol (PVA) selective layer of thin film composite (TFC) membranes by aluminosilicate (Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub>) nanoparticles on the structure and pervaporation performance was studied. For the...
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MDPI AG
2022-06-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/13/7215 |
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| author | Katsiaryna S. Burts Tatiana V. Plisko Vladimir G. Prozorovich Galina B. Melnikova Andrei I. Ivanets Alexandr V. Bildyukevich |
| author_facet | Katsiaryna S. Burts Tatiana V. Plisko Vladimir G. Prozorovich Galina B. Melnikova Andrei I. Ivanets Alexandr V. Bildyukevich |
| author_sort | Katsiaryna S. Burts |
| collection | DOAJ |
| description | The effect of the modification of the polyvinyl alcohol (PVA) selective layer of thin film composite (TFC) membranes by aluminosilicate (Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub>) nanoparticles on the structure and pervaporation performance was studied. For the first time, PVA-Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub>/polyacrylonitrile (PAN) thin film nanocomposite (TFN) membranes for pervaporation separation of ethanol/water mixture were developed via the formation of the selective layer in dynamic mode. Selective layers of PVA/PAN and PVA-Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub>/PAN membranes were formed via filtration of PVA aqueous solutions or PVA-Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub> aqueous dispersions through the ultrafiltration PAN membrane for 10 min at 0.3 MPa in dead-end mode. Average particle size and zeta potential of aluminosilicate nanoparticles in PVA aqueous solution were analyzed using the dynamic light scattering technique. Structure and surface properties of membranes were studied using scanning electron microscopy (SEM), atomic force microscopy (AFM) and water contact angle measurements. Membrane performance was investigated in pervaporation dehydration of ethanol/water mixtures in the broad concentration range. It was found that flux of TFN membranes decreased with addition of Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub> nanoparticles into the selective layer due to the increase in selective layer thickness. However, ethanol/water separation factor of TFN membranes was found to be significantly higher compared to the reference TFC membrane in the whole range of studied ethanol/water feed mixtures with different concentrations, which is attributed to the increase in membrane hydrophilicity. It was found that developed PVA-Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub>/PAN TFN membranes were more stable in the dehydration of ethanol in the whole range of investigated concentrations as well as at different temperatures of the feed mixtures (25 °C, 35 °C, 50 °C) compared to the reference membrane which is due to the additional cross-linking of the selective layer by formation hydrogen and donor-acceptor bonds between aluminosilicate nanoparticles and PVA macromolecules. |
| first_indexed | 2024-03-09T21:49:22Z |
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| language | English |
| last_indexed | 2024-03-09T21:49:22Z |
| publishDate | 2022-06-01 |
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| spelling | doaj.art-dfcd63a6fb754895b506b2b485d69a112023-11-23T20:10:01ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-06-012313721510.3390/ijms23137215Modification of Thin Film Composite PVA/PAN Membranes for Pervaporation Using Aluminosilicate NanoparticlesKatsiaryna S. Burts0Tatiana V. Plisko1Vladimir G. Prozorovich2Galina B. Melnikova3Andrei I. Ivanets4Alexandr V. Bildyukevich5Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 220072 Minsk, BelarusInstitute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 220072 Minsk, BelarusInstitute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, 220072 Minsk, BelarusA. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 220072 Minsk, BelarusInstitute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, 220072 Minsk, BelarusInstitute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 220072 Minsk, BelarusThe effect of the modification of the polyvinyl alcohol (PVA) selective layer of thin film composite (TFC) membranes by aluminosilicate (Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub>) nanoparticles on the structure and pervaporation performance was studied. For the first time, PVA-Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub>/polyacrylonitrile (PAN) thin film nanocomposite (TFN) membranes for pervaporation separation of ethanol/water mixture were developed via the formation of the selective layer in dynamic mode. Selective layers of PVA/PAN and PVA-Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub>/PAN membranes were formed via filtration of PVA aqueous solutions or PVA-Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub> aqueous dispersions through the ultrafiltration PAN membrane for 10 min at 0.3 MPa in dead-end mode. Average particle size and zeta potential of aluminosilicate nanoparticles in PVA aqueous solution were analyzed using the dynamic light scattering technique. Structure and surface properties of membranes were studied using scanning electron microscopy (SEM), atomic force microscopy (AFM) and water contact angle measurements. Membrane performance was investigated in pervaporation dehydration of ethanol/water mixtures in the broad concentration range. It was found that flux of TFN membranes decreased with addition of Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub> nanoparticles into the selective layer due to the increase in selective layer thickness. However, ethanol/water separation factor of TFN membranes was found to be significantly higher compared to the reference TFC membrane in the whole range of studied ethanol/water feed mixtures with different concentrations, which is attributed to the increase in membrane hydrophilicity. It was found that developed PVA-Al<sub>2</sub>O<sub>3</sub>·SiO<sub>2</sub>/PAN TFN membranes were more stable in the dehydration of ethanol in the whole range of investigated concentrations as well as at different temperatures of the feed mixtures (25 °C, 35 °C, 50 °C) compared to the reference membrane which is due to the additional cross-linking of the selective layer by formation hydrogen and donor-acceptor bonds between aluminosilicate nanoparticles and PVA macromolecules.https://www.mdpi.com/1422-0067/23/13/7215thin film nanocomposite membranealuminosilicate nanoparticlespolyvinyl alcoholdynamic membranepervaporationethanol dehydration |
| spellingShingle | Katsiaryna S. Burts Tatiana V. Plisko Vladimir G. Prozorovich Galina B. Melnikova Andrei I. Ivanets Alexandr V. Bildyukevich Modification of Thin Film Composite PVA/PAN Membranes for Pervaporation Using Aluminosilicate Nanoparticles International Journal of Molecular Sciences thin film nanocomposite membrane aluminosilicate nanoparticles polyvinyl alcohol dynamic membrane pervaporation ethanol dehydration |
| title | Modification of Thin Film Composite PVA/PAN Membranes for Pervaporation Using Aluminosilicate Nanoparticles |
| title_full | Modification of Thin Film Composite PVA/PAN Membranes for Pervaporation Using Aluminosilicate Nanoparticles |
| title_fullStr | Modification of Thin Film Composite PVA/PAN Membranes for Pervaporation Using Aluminosilicate Nanoparticles |
| title_full_unstemmed | Modification of Thin Film Composite PVA/PAN Membranes for Pervaporation Using Aluminosilicate Nanoparticles |
| title_short | Modification of Thin Film Composite PVA/PAN Membranes for Pervaporation Using Aluminosilicate Nanoparticles |
| title_sort | modification of thin film composite pva pan membranes for pervaporation using aluminosilicate nanoparticles |
| topic | thin film nanocomposite membrane aluminosilicate nanoparticles polyvinyl alcohol dynamic membrane pervaporation ethanol dehydration |
| url | https://www.mdpi.com/1422-0067/23/13/7215 |
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