应用化学 ›› 2026, Vol. 43 ›› Issue (2): 259-274.DOI: 10.19894/j.issn.1000-0518.250107

• 研究论文 • 上一篇    下一篇

改性聚苯并咪唑耐溶剂纳滤膜的制备及性能

焦丽娜, 王晨钰, 江娱婷, 贺苗苗, 陈冬菊()   

  1. 辽宁师范大学化学化工学院,大连 116029
  • 收稿日期:2025-03-14 接受日期:2025-06-24 出版日期:2026-02-01 发布日期:2026-03-06
  • 通讯作者: 陈冬菊
  • 基金资助:
    国家自然科学基金(22075121);大连理工大学精细化工国家重点实验室开放课题项目(KF2205)

Preparation and Properties of Modified Polybenzimidazole Solvent Resistant Nanofiltration Membranes

Li-Na JIAO, Chen-Yu WANG, Yu-Ting JIANG, Miao-Miao HE, Dong-Ju CHEN()   

  1. School of Chemistry and Chemical Engineering,Liaoning Normal University,Dalian 116029,China
  • Received:2025-03-14 Accepted:2025-06-24 Published:2026-02-01 Online:2026-03-06
  • Contact: Dong-Ju CHEN
  • About author:Dongjuchen_1978@lnnu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22075121);the Open Project of State Key Laboratory of Fine Chemicals, Dalian University of Technology(KF2205)

摘要:

随着我国工业的不断的发展,产生了越来越多的有机废液。 因此,从有机溶液中分离溶质并回收溶剂引起人们的广泛关注。 相比传统的分离技术,纳滤因具有操作条件温和、能耗小等优点逐渐被应用于有机溶液中,但开发出能在有机溶剂中稳定存在的并具有良好分离性能的纳滤膜仍是一大挑战。 本研究选择FeCl3·6H2O和ZnSO4·7H2O溶液作为交联剂与聚苯并咪唑(Polybenzimidazole, OPBI)膜发生交联反应,制备了高性能的改性OPBI耐溶剂纳滤膜。 对改性前后纳滤膜的形貌结构以及分离性能进行探究。 结果表明,与原始OPBI膜相比,所有改性膜的分离性能均有显著提高。 交联后,OPBI膜在异丙醇(IPA)中对玫瑰红(RB)的截留率均达到了99%以上。 交联膜在药物和食品方面也有良好的应用前景,对IPA中的四环素和二氯甲烷(DCM)中的L-α-卵磷脂均具有优异的截留率。 此外,交联膜在有机溶剂中也具有优异的稳定性,在NN-二甲基甲酰胺(DMF)、NN-二甲基乙酰胺(DMAc)等强极性溶剂中也表现出良好的稳定性。

关键词: 聚苯并咪唑, 耐溶剂纳滤, 交联, 金属离子, 溶剂稳定性

Abstract:

With the continuous development of our country's industry, more and more organic waste liquid has been produced. Therefore, the separation of solutes from organic solutions and the recovery of solvents have attracted extensive attention. Compared with traditional separation technologies, nanofiltration has been gradually applied to organic solutions due to its advantages of mild operating conditions and low energy consumption, but it is still a major challenge to develop nanofiltration membranes that can exist stably in organic solvents and have good separation performance. In this study, FeCl3·6H2O and ZnSO4·7H2O solutions were selected as cross-linking agents to cross-link with polybenzimidazole (OPBI) membranes, and high-performance modified OPBI solvent-resistant nanofiltration membranes were prepared. The morphology and structure of the nanofiltration membranes before and after modification as well as the separation performance were investigated. The experimental results showed that the separation performance of all modified membranes was significantly improved compared with the original OPBI membranes. For example, the retention of rose bengal (RB) in isopropanol (IPA) by the crosslinked OPBI membranes all reached more than 99%. Crosslinked membranes also have good application prospects in drugs and food, with excellent retention of tetracycline in IPA and L-α-lecithin in dichloromethane (DCM). In addition, the crosslinked membranes also have excellent stability in organic solvents and show good stability in strong polar solvents such as N,N-dimethylformamide (DMF) and N,N-dimethylacetamide (DMAc).

Key words: Polybenzimidazole, Solvent resistant nanofiltration, Crosslinked, Metal ions, Solvent stability

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