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用于提高拒盐性能的羧化聚砜膜的分子工程

Molecular Engineering of Carboxylated Polysulfone Membranes for Enhancing Salt Rejection.

作者信息

Chen Zhuonan, Eisen Moris S

机构信息

Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel.

Department of Chemistry, Guangdong Technion-Israel Institute of Technology, Shantou 515063, China.

出版信息

Polymers (Basel). 2025 Jun 30;17(13):1840. doi: 10.3390/polym17131840.

DOI:10.3390/polym17131840
PMID:40647855
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12252009/
Abstract

Developing advanced polysulfone (PSF) membranes for water treatment has garnered significant attention. However, carboxylated polysulfone membranes have shown limited rejection of various ions. This study explores four novel methods for modifying carboxylated polysulfone membranes to enhance their performance: (a) crosslinking of the dicarboxylated membrane surface with polyethylenimine or ethylenediamine, (b) partial hydrolysis of ethylenediamine-crosslinked dicarboxylated membranes to create tailored pores and surface brushes with terminal amine groups, (c) attachment of alkyl brushes to the dicarboxylated membrane surface, and (d) formation of quaternary ammonium moieties at the membrane surface. All modified membranes were fully characterized, and their enhanced functionality was confirmed. For instance, the PSF-PEI membrane exhibited a 28% CaCl rejection and PSF-NH showed improved CaCl rejection up to 37%, compared to 0% for the unmodified PSF-COOH. These methods present practical strategies to modify carboxylated-related membranes further, offering potential pathways to enhance their performance.

摘要

开发用于水处理的先进聚砜（PSF）膜已引起广泛关注。然而，羧化聚砜膜对各种离子的截留率有限。本研究探索了四种修饰羧化聚砜膜以提高其性能的新方法：（a）用聚乙烯亚胺或乙二胺对二羧化膜表面进行交联，（b）对乙二胺交联的二羧化膜进行部分水解，以形成具有末端胺基的定制孔和表面刷，（c）将烷基刷连接到二羧化膜表面，以及（d）在膜表面形成季铵基团。对所有修饰后的膜进行了全面表征，并证实了它们增强的功能。例如，与未修饰的PSF-COOH的0%相比，PSF-PEI膜对CaCl的截留率为28%，PSF-NH对CaCl的截留率提高到37%。这些方法为进一步修饰羧化相关膜提供了实用策略，为提高其性能提供了潜在途径。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/c39c67a33a45/polymers-17-01840-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/4f29cd43a7eb/polymers-17-01840-sch002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/828c4058cb27/polymers-17-01840-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/a46901bb6525/polymers-17-01840-sch004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/130fb1f1e33c/polymers-17-01840-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/3c91a0bc74cc/polymers-17-01840-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/ac94d61af191/polymers-17-01840-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/98145d09f2a9/polymers-17-01840-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/c39c67a33a45/polymers-17-01840-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/c18cd3a43ea5/polymers-17-01840-sch003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/02f1e5909665/polymers-17-01840-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/6b00ac17a64b/polymers-17-01840-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/ad8826ab3400/polymers-17-01840-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/0cd777fb8655/polymers-17-01840-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/aa1574409847/polymers-17-01840-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/4f29cd43a7eb/polymers-17-01840-sch002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/828c4058cb27/polymers-17-01840-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/a46901bb6525/polymers-17-01840-sch004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/4ccbae656831/polymers-17-01840-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/2ed1fd0069a8/polymers-17-01840-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/130fb1f1e33c/polymers-17-01840-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/3c91a0bc74cc/polymers-17-01840-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/ac94d61af191/polymers-17-01840-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/98145d09f2a9/polymers-17-01840-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/35b3/12252009/c39c67a33a45/polymers-17-01840-g012.jpg

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