Dye wastewater poses a severe danger to the environment and human health. The purification of dye wastewater is the focus and hotspot of most researchers. In this work, ethylene glycol (EG) was selected as an aqueous phase monomer to fabricate polyester membranes through an interfacial polymerization reaction. Then the polyester membrane was activated by ethanol aqueous solution. By adjusting the activation time and concentration of the ethanol, the network of the polyester membrane can be reshaped to endow the membrane with excellent performance. The activation mechanism was also explored here. Compared to the membrane without activation (PE-0%), the permeability of the optimized membrane (PE-40%) was increased by 8.3 times, and a high rejection was maintained (CR: 99.2%). Importantly, the PE-40% membrane also presented good acid and alkali resistance, chlorine resistance, and excellent antifouling performance. Our work provides an effective and feasible strategy for the development of high-performance polyester membranes.

中文翻译：

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聚酯膜的乙醇活化可实现卓越的染料/盐分离性能


染料废水对环境和人类健康构成严重威胁。染料废水的净化是大多数研究人员关注的重点和热点。在这项工作中，选择乙二醇 （EG） 作为水相单体，通过界面聚合反应制备聚酯膜。然后用乙醇水溶液活化聚酯膜。通过调整乙醇的活化时间和浓度，可以重塑聚酯膜的网络，赋予膜优异的性能。这里还探讨了激活机制。与未活化的膜 （PE-0%） 相比，优化膜的通透性 （PE-40%） 提高了 8.3 倍，并保持了较高的截留率 （CR： 99.2%）。重要的是，PE-40% 膜还具有良好的耐酸碱性、耐氯性和出色的防污性能。我们的工作为高性能聚酯膜的开发提供了一种有效可行的策略。