Fabrication of POSS-centered polyester network as high anti-chlorine and anti-fouling separation layer of membrane via successive Photo-ATRP and interfacial polymerization for molecular separation

IF 8.4 1区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Membrane Science Pub Date : 2024-10-22 DOI:10.1016/j.memsci.2024.123432

Xiaoling Xu , Bin Peng , Yanqiu Wang , Yaqi Dong , Hui Wang , Wentong Chen , Yan Liu , Qiang Zhang

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Abstract

The incorporation of polyhedral oligomeric sesquisiloxane (POSS), a distinctive nanoparticle, into the membrane separation layer represents an effective strategy for enhancing the chlorine resistance of membranes. This modification contributes to both the durability of the membrane and its separation efficiency. However, POSS is easy to agglomerate, which affects the separation performance of the membrane. In this paper, POSS-centered polyhydroxy polymer (OMEPOSS-P(GMA-NMDG)) was synthesized via photo-induced atom transfer radical polymerization and used as water-soluble monomer to prepare polyester separation layer on porous substrates through interfacial polymerization with trimelanoyl chloride. The obtained POSS-centered polyester membrane exhibits a high dye removal rate exceeding 99 %, and it can realize the screening of dye molecules with different molecular weight and different charge. Notably, the membrane demonstrates excellent chlorine resistance, maintaining effective separation efficiency after exposure to sodium hypochlorite solutions at concentrations of 10 000 ppm for 96 h and 1000 ppm for 7 days. It is worth noting that the membrane showed high anti-fouling performance. This method provides a useful guideline for the development of chlorine-resistant and anti-fouling separation membranes.

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通过连续光-ATRP 和界面聚合制造以 POSS 为中心的聚酯网络，作为膜的高抗氯和防污分离层，实现分子分离

在膜分离层中加入多面体低聚倍半硅氧烷（POSS）这种独特的纳米粒子，是提高膜耐氯性的有效策略。这种改性有助于提高膜的耐久性和分离效率。然而，POSS 容易团聚，影响膜的分离性能。本文通过光诱导原子转移自由基聚合合成了以 POSS 为中心的聚羟基聚合物（OMEPOSS-P(GMA-NMDG)），并将其作为水溶性单体，通过与三苯甲酰氯的界面聚合在多孔基底上制备聚酯分离层。所制备的以 POSS 为中心的聚酯膜对染料的去除率高达 99% 以上，并能实现对不同分子量、不同电荷的染料分子的筛选。值得注意的是，该膜具有优异的耐氯性，在浓度为 10 000 ppm 的次氯酸钠溶液中暴露 96 小时和 1000 ppm 的次氯酸钠溶液中暴露 7 天后，仍能保持有效的分离效率。值得注意的是，这种膜还具有很高的防污性能。该方法为开发抗氯防污分离膜提供了有用的指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Membrane Science 工程技术-高分子科学

CiteScore

17.10

自引率

17.90%

发文量

1031

审稿时长

2.5 months

期刊介绍： The Journal of Membrane Science is a publication that focuses on membrane systems and is aimed at academic and industrial chemists, chemical engineers, materials scientists, and membranologists. It publishes original research and reviews on various aspects of membrane transport, membrane formation/structure, fouling, module/process design, and processes/applications. The journal primarily focuses on the structure, function, and performance of non-biological membranes but also includes papers that relate to biological membranes. The Journal of Membrane Science publishes Full Text Papers, State-of-the-Art Reviews, Letters to the Editor, and Perspectives.