膜科学与技术

超疏水PDMS/PVDF纳米纤维膜制备及其苯酚分离性能

作者：齐炜东，徐孙杰，许振良，李萍萍，尹怡

单位：化学工程联合国家重点实验室，膜科学与工程研发中心，化学工程研究所，华东理工大学化工学院，上海

关键词：苯酚；聚二甲基硅氧烷；芳香烃膜分离回收系统；静电纺丝；纳米纤维膜

出版年,卷(期):页码： 2021,41(1):10-15

摘要：

采用静电纺丝法制备了聚二甲基硅氧烷（PDMS）/聚偏氟乙烯（PVDF）纳米纤维膜，通过扫描电镜（SEM）、红外光谱（ATR-FTIR）、能谱仪（EDS）、原子力显微镜（AFM）、水接触角等仪器对膜进行了表征，并获得了苯酚传质分离性能，讨论了PDMS/PVDF配比对纳米纤维膜结构和性能的影响。结果表明：当PDMS:PVDF = 3:7时，纳米纤维膜MPDMS3具有最佳微观形貌，厚度30 μm，水接触角150°且25 ℃时总传质系数Kov为16.9 × 10-7 m/s。将制备的膜MPDMS3应用于芳香烃膜分离回收系统（MARS）中分离水中苯酚，75 h后苯酚去除率达到99.7%，具有良好的长期稳定性。

The PDMS/PVDF nanofiber membrane was prepared by electrospinning method. Through the characterization of SEM, ATR-FTIR, EDS, AFM, water contact angle and the MARS tests, the PDMS/PVDF ratio was compared to the influence of membrane structure and performance. The experiments found that when PDMS:PVDF = 3:7, membrane MPDMS3 has the best micro-morphology with the thickness of 30 μm, water contact angle of 150°. And the total mass transfer coefficient Kov reaches 16.9 × 10-7 m/s at 25 ℃. The prepared membrane MPDMS3 was applied to membrane aromatic recovery system (MARS) and showed a good long-term stability. After 75 h, the phenol removal rate reached 99.7%.

齐炜东(1994-)，男，安徽桐城，硕士研究生在读，主要从事膜制备及其水处理研究工作

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