Kim Kwanghwi, Lee Heejun, Park Hyun Sic, Song Hojun, Kim Suhan
Green Materials & Processes R&D Group, Korea Institute of Industrial Technology, 55 Jongga-ro, Jung-gu, Ulsan, 44413, South Korea.
Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
Heliyon. 2023 Sep 5;9(9):e19829. doi: 10.1016/j.heliyon.2023.e19829. eCollection 2023 Sep.
Conventional methods for improving the hydrophobicity of polypropylene (PP) membranes to prevent wetting phenomena require complex pretreatment procedures in order to activate the surface for enabling the reaction with fluorosilane (FS)-based materials. This study successfully prepared PP membrane contactors with enhanced hydrophobicity through a simple single-step dip-coating method using perfluoroether-grafted silanes for CO capture. The FS coating layer on the PP membrane surface was confirmed through ATR-FTIR spectroscopy, XPS, FE-SEM, and EDS. Furthermore, the evaluation of the CO absorption performance and long-term stability of the FS-coated PP membrane according to the variation of the gas flow rate (50, 100, 200, 400, and 800 mL/min) confirmed the superior chemical stability and durability of our membranes to those of previously reported hydrophobic membranes. The as-prepared FS-coated PP membrane expands the application scope of gas-liquid membrane contactors for CO capture from the flue gas of coal-fired power plants.
传统的提高聚丙烯（PP）膜疏水性以防止润湿现象的方法需要复杂的预处理程序，以便活化表面从而能够与氟硅烷（FS）基材料发生反应。本研究通过使用全氟醚接枝硅烷的简单单步浸涂法成功制备了具有增强疏水性的PP膜接触器用于CO捕集。通过衰减全反射傅里叶变换红外光谱（ATR-FTIR）、X射线光电子能谱（XPS）、场发射扫描电子显微镜（FE-SEM）和能谱分析（EDS）对PP膜表面的FS涂层进行了确认。此外，根据气体流速（50、100、200、400和800 mL/min）的变化对FS涂层PP膜的CO吸收性能和长期稳定性进行评估，证实了我们的膜相对于先前报道的疏水膜具有优异的化学稳定性和耐久性。所制备的FS涂层PP膜扩大了气液膜接触器在从燃煤电厂烟气中捕集CO方面的应用范围。
