Novel Composite Anion Exchange Membranes Based on Quaternized Polyepichlorohydrin for Electromembrane Application

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• 作者：Bo Han ; Jiefeng Pan ; Shanshan Yang ; Mali Zhou ; Jian Li ; Arcadio Sotto Díaz ; Bart Van der Bruggen ; Congjie Gao ; Jiangnan Shen
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：July 6, 2016
• 年：2016
• 卷：55
• 期：26
• 页码：7171-7178
• 全文大小：612K
• 年卷期：0
• ISSN：1520-5045

文摘

A series of semi-interpenetrating polymer network (sIPN) composite anion exchange membranes were fabricated depending on immobilized linear PVDF and cross-linked polyepichlorohydrin (PECH), 1,4-diazabicyclo[2.2.2]octane, (DABCO) network through in situ synthetic pathway. A cyclic diamine (DABCO) was used as cross-linking agent and simultaneously improved the ion-exchange capacity by amination. Scanning electron microscopy (SEM) indicated that the composite membranes exhibited a dense and homogeneous structure. Successful formation of PECH-DABCO copolymer within the sIPN membranes was also confirmed by Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS). The PVDF percentage and inherent properties of membranes such as ion exchange capacity (IEC), water uptake (W_R), thermal stability, mechanical property, and area resistance were investigated to evaluate their applicability in electrodialysis (ED). The experimental results showed that the composite membrane maintained a good perspective for ED application.