Preparation of Hydrophobic 3D Covalent Organic Polymer Membranes via Interfacial Ripening for Organic Solvent Nanofiltration

IF 4.7 2区化学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Polymer Materials Pub Date : 2025-09-29 DOI:10.1021/acsapm.5c02758

Xin Jiang, , , Ying Chen, , , Menghao Lin, , , Xinjuan Zeng, , , Cailong Zhou*, , , Luxi Tan, , and , Xiaowei Huang*,

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Abstract

Covalent organic polymers (COPs) represent a class of porous organic materials suitable for addressing separation challenges due to their tunable pore distribution. This work introduces the synthesis of a hydrophobic three-dimensional (3D) COP, TAPM-TFPDA, via an oligomer-mediated interfacial ripening method and its application in organic solvent nanofiltration (OSN). Utilizing an acetic acid-catalyzed system enables the room-temperature fabrication of 3D COP membranes. Characterization reveals that the TAPM-TFPDA membranes exhibit a narrow pore size distribution, exceptional solvent resistance, and high thermal stability. During interfacial ripening under the optimized conditions, the TAPM-TFPDA membrane achieved a 95.56% rejection of Evans blue and an ethanol permeance of 16.0 L·m^–2·h^–1·bar^–1. Notably, its permeance in polar solvents like acetonitrile significantly outperformed that in nonpolar solvents. The COP membrane, produced through this straightforward process, exhibits exceptional performance in organic solvent separation. This highlights a viable strategy for developing high-performance separation membranes, allowing for precise structural tuning through the adjustment of process parameters.

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界面成熟法制备用于有机溶剂纳滤的三维共价有机聚合物疏水膜

共价有机聚合物（cop）是一类多孔有机材料，由于其可调节的孔分布，适合解决分离挑战。本工作介绍了通过低聚物介导的界面成熟方法合成疏水三维（3D） COP - TAPM-TFPDA及其在有机溶剂纳滤（OSN）中的应用。利用醋酸催化体系可以在室温下制备3D COP膜。表征表明，ttap - tfpda膜具有狭窄的孔径分布，优异的耐溶剂性和高的热稳定性。在优化的界面成熟条件下，ttap - tfpda膜对埃文斯蓝的截留率为95.56%，乙醇渗透率为16.0 L·m-2·h-1·bar-1。值得注意的是，它在极性溶剂如乙腈中的渗透率明显优于在非极性溶剂中的渗透率。通过这种简单的工艺生产的COP膜，在有机溶剂分离中表现出优异的性能。这突出了开发高性能分离膜的可行策略，允许通过调整工艺参数进行精确的结构调整。

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来源期刊

ACS Applied Polymer Materials Multiple-

CiteScore

7.20

自引率

6.00%

发文量

810

期刊介绍： ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.