Effects of Latent Solvent Content on Tuning the Nanofiltration Performance of Nanofibrous Composite Membranes
This study aims to optimize the application of electrospun nanofibrous substrates in thin-film composite (TFC) nanofiltration (NF) membranes for enhanced liquid separation efficiency by employing a method of effective welding between fibers using latent solvents. Polyacrylonitrile (PAN) nanofiber su...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/15/4/118 |
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| author | Xu-Dong Cao Yu-Xuan Shao Qian Wang Tian-Dan Lu Jing Zhong |
| author_facet | Xu-Dong Cao Yu-Xuan Shao Qian Wang Tian-Dan Lu Jing Zhong |
| author_sort | Xu-Dong Cao |
| collection | DOAJ |
| description | This study aims to optimize the application of electrospun nanofibrous substrates in thin-film composite (TFC) nanofiltration (NF) membranes for enhanced liquid separation efficiency by employing a method of effective welding between fibers using latent solvents. Polyacrylonitrile (PAN) nanofiber substrates were fabricated via electrospinning, and a dense polyamide selective layer was formed on their surface through interfacial polymerization (IP). The investigation focused on the effects of different solvent systems, particularly the role of dimethyl sulfoxide (DMSO) as a latent solvent, on the nanostructure and final membrane performance. The results indicate that increasing the DMSO content can enhance the greenness of the fabrication process, the substrate hydrophilicity, and the mechanical strength, while also influencing the thickness and morphology of the polyamide layer. At a DMSO rate of 30%, the composite membrane achieves optimal pure water permeability and high rejection rates; when the DMSO content exceeds 40%, structural inhomogeneity in the substrate membrane leads to an increase in defects, significantly deteriorating membrane performance. These findings provide theoretical insights and technical guidance for the application of electrospinning technology in designing efficient and stable NF membranes. |
| format | Article |
| id | doaj-art-389fd874b6f643909340da3bb4408df7 |
| institution | DOAJ |
| issn | 2077-0375 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj-art-389fd874b6f643909340da3bb4408df72025-08-20T03:13:32ZengMDPI AGMembranes2077-03752025-04-0115411810.3390/membranes15040118Effects of Latent Solvent Content on Tuning the Nanofiltration Performance of Nanofibrous Composite MembranesXu-Dong Cao0Yu-Xuan Shao1Qian Wang2Tian-Dan Lu3Jing Zhong4Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, ChinaJiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, ChinaNational-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization, Changzhou University, Changzhou 213164, ChinaJiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, ChinaJiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, ChinaThis study aims to optimize the application of electrospun nanofibrous substrates in thin-film composite (TFC) nanofiltration (NF) membranes for enhanced liquid separation efficiency by employing a method of effective welding between fibers using latent solvents. Polyacrylonitrile (PAN) nanofiber substrates were fabricated via electrospinning, and a dense polyamide selective layer was formed on their surface through interfacial polymerization (IP). The investigation focused on the effects of different solvent systems, particularly the role of dimethyl sulfoxide (DMSO) as a latent solvent, on the nanostructure and final membrane performance. The results indicate that increasing the DMSO content can enhance the greenness of the fabrication process, the substrate hydrophilicity, and the mechanical strength, while also influencing the thickness and morphology of the polyamide layer. At a DMSO rate of 30%, the composite membrane achieves optimal pure water permeability and high rejection rates; when the DMSO content exceeds 40%, structural inhomogeneity in the substrate membrane leads to an increase in defects, significantly deteriorating membrane performance. These findings provide theoretical insights and technical guidance for the application of electrospinning technology in designing efficient and stable NF membranes.https://www.mdpi.com/2077-0375/15/4/118membrane structure regulationnanofiberelectrospinningliquid separation |
| spellingShingle | Xu-Dong Cao Yu-Xuan Shao Qian Wang Tian-Dan Lu Jing Zhong Effects of Latent Solvent Content on Tuning the Nanofiltration Performance of Nanofibrous Composite Membranes Membranes membrane structure regulation nanofiber electrospinning liquid separation |
| title | Effects of Latent Solvent Content on Tuning the Nanofiltration Performance of Nanofibrous Composite Membranes |
| title_full | Effects of Latent Solvent Content on Tuning the Nanofiltration Performance of Nanofibrous Composite Membranes |
| title_fullStr | Effects of Latent Solvent Content on Tuning the Nanofiltration Performance of Nanofibrous Composite Membranes |
| title_full_unstemmed | Effects of Latent Solvent Content on Tuning the Nanofiltration Performance of Nanofibrous Composite Membranes |
| title_short | Effects of Latent Solvent Content on Tuning the Nanofiltration Performance of Nanofibrous Composite Membranes |
| title_sort | effects of latent solvent content on tuning the nanofiltration performance of nanofibrous composite membranes |
| topic | membrane structure regulation nanofiber electrospinning liquid separation |
| url | https://www.mdpi.com/2077-0375/15/4/118 |
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