Influence of Draw Ratio and Take-Up Velocity on Properties of Ultrafiltration Hollow Fiber Membranes from Polyethersulfone
This study aimed to reveal the influence of the draw ratio and take-up speed on the pore size distribution and morphology of the hollow fiber ultrafiltration membrane selective layer. To this end, spinnerets with ring ducts of 1.8 and 1.3 mm were employed, whereas the external diameter of the obtain...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Fibers |
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| Online Access: | https://www.mdpi.com/2079-6439/10/3/29 |
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| author | George Dibrov George Kagramanov Vladislav Sudin Sergey Molchanov Evgenia Grushevenko Alexey Yushkin Vladimir Volkov |
| author_facet | George Dibrov George Kagramanov Vladislav Sudin Sergey Molchanov Evgenia Grushevenko Alexey Yushkin Vladimir Volkov |
| author_sort | George Dibrov |
| collection | DOAJ |
| description | This study aimed to reveal the influence of the draw ratio and take-up speed on the pore size distribution and morphology of the hollow fiber ultrafiltration membrane selective layer. To this end, spinnerets with ring ducts of 1.8 and 1.3 mm were employed, whereas the external diameter of the obtained fiber was kept equal. Atomic force microscopy and scanning electron microscopy were employed to study the morphology of the selective layer. Liquid–liquid displacement porosimetry was used to determine the limiting pore size distribution. The produced polyethersulfone ultrafiltration membranes had a robust, sponge-like porous structure, permeance 1000 L/(m<sup>2</sup>·h·bar), smooth selective layer, and mean pore size 25 nm. It was found that limiting pore sizes are affected more by the change in the take-up speed, whereas the surface pore sizes, roughness, and morphology are controlled by the draw ratio. It was shown that excessive draw causes the selective layer stretching and crop-up of the porous sublayer. Consequently, the diameters of the spinneret ring duct and the bore needle should match the hollow fiber outer and lumen diameters, respectively. |
| first_indexed | 2024-03-09T19:50:51Z |
| format | Article |
| id | doaj.art-0dd09e0f435242c8b86af33587721ecb |
| institution | Directory Open Access Journal |
| issn | 2079-6439 |
| language | English |
| last_indexed | 2024-03-09T19:50:51Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fibers |
| spelling | doaj.art-0dd09e0f435242c8b86af33587721ecb2023-11-24T01:09:11ZengMDPI AGFibers2079-64392022-03-011032910.3390/fib10030029Influence of Draw Ratio and Take-Up Velocity on Properties of Ultrafiltration Hollow Fiber Membranes from PolyethersulfoneGeorge Dibrov0George Kagramanov1Vladislav Sudin2Sergey Molchanov3Evgenia Grushevenko4Alexey Yushkin5Vladimir Volkov6Department of Membrane Technology, D. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, RussiaDepartment of Membrane Technology, D. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, RussiaBaikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334 Moscow, RussiaA.V. Topchiev Institute of Petrochemical Synthesis RAS, Russian Academy of Sciences, 119071 Moscow, RussiaA.V. Topchiev Institute of Petrochemical Synthesis RAS, Russian Academy of Sciences, 119071 Moscow, RussiaA.V. Topchiev Institute of Petrochemical Synthesis RAS, Russian Academy of Sciences, 119071 Moscow, RussiaA.V. Topchiev Institute of Petrochemical Synthesis RAS, Russian Academy of Sciences, 119071 Moscow, RussiaThis study aimed to reveal the influence of the draw ratio and take-up speed on the pore size distribution and morphology of the hollow fiber ultrafiltration membrane selective layer. To this end, spinnerets with ring ducts of 1.8 and 1.3 mm were employed, whereas the external diameter of the obtained fiber was kept equal. Atomic force microscopy and scanning electron microscopy were employed to study the morphology of the selective layer. Liquid–liquid displacement porosimetry was used to determine the limiting pore size distribution. The produced polyethersulfone ultrafiltration membranes had a robust, sponge-like porous structure, permeance 1000 L/(m<sup>2</sup>·h·bar), smooth selective layer, and mean pore size 25 nm. It was found that limiting pore sizes are affected more by the change in the take-up speed, whereas the surface pore sizes, roughness, and morphology are controlled by the draw ratio. It was shown that excessive draw causes the selective layer stretching and crop-up of the porous sublayer. Consequently, the diameters of the spinneret ring duct and the bore needle should match the hollow fiber outer and lumen diameters, respectively.https://www.mdpi.com/2079-6439/10/3/29polyethersulfonehollow fibermembranedraw ratiotake-up velocityultrafiltration |
| spellingShingle | George Dibrov George Kagramanov Vladislav Sudin Sergey Molchanov Evgenia Grushevenko Alexey Yushkin Vladimir Volkov Influence of Draw Ratio and Take-Up Velocity on Properties of Ultrafiltration Hollow Fiber Membranes from Polyethersulfone Fibers polyethersulfone hollow fiber membrane draw ratio take-up velocity ultrafiltration |
| title | Influence of Draw Ratio and Take-Up Velocity on Properties of Ultrafiltration Hollow Fiber Membranes from Polyethersulfone |
| title_full | Influence of Draw Ratio and Take-Up Velocity on Properties of Ultrafiltration Hollow Fiber Membranes from Polyethersulfone |
| title_fullStr | Influence of Draw Ratio and Take-Up Velocity on Properties of Ultrafiltration Hollow Fiber Membranes from Polyethersulfone |
| title_full_unstemmed | Influence of Draw Ratio and Take-Up Velocity on Properties of Ultrafiltration Hollow Fiber Membranes from Polyethersulfone |
| title_short | Influence of Draw Ratio and Take-Up Velocity on Properties of Ultrafiltration Hollow Fiber Membranes from Polyethersulfone |
| title_sort | influence of draw ratio and take up velocity on properties of ultrafiltration hollow fiber membranes from polyethersulfone |
| topic | polyethersulfone hollow fiber membrane draw ratio take-up velocity ultrafiltration |
| url | https://www.mdpi.com/2079-6439/10/3/29 |
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