用于海水淡化的阴离子交换膜设计及电渗析研究
Design of Anion Exchange Membranes and Electrodialysis Studies for Water Desalination.
作者信息
Khan Muhammad Imran, Luque Rafael, Akhtar Shahbaz, Shaheen Aqeela, Mehmood Ashfaq, Idress Sidra, Buzdar Saeed Ahmad, Ur Rehman Aziz
机构信息
Department of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan.
School of Chemistry and Material Science, University of Science and Technology of China, Hefei 230026, China.
出版信息
Materials (Basel). 2016 May 12;9(5):365. doi: 10.3390/ma9050365.
Anion exchange membranes are highly versatile and nowadays have many applications, ranging from water treatment to sensing materials. The preparation of anion exchange membranes (AEMs) from brominated poly(2,6-dimethyl-1,6-phenylene oxide) (BPPO) and methyl(diphenyl)phosphine (MDPP) for electrodialysis was performed. The physiochemical properties and electrochemical performance of fabricated membranes can be measured by changing MDPP contents in the membrane matrix. The influence of a quaternary phosphonium group associated with the removal of NaCl from water is discussed. The prepared membranes have ion exchange capacities (IEC) 1.09-1.52 mmol/g, water uptake (W) 17.14%-21.77%, linear expansion ratio (LER) 7.96%-11.86%, tensile strength (TS) 16.66-23.97 MPa and elongation at break () 485.57%-647.98%. The prepared anion exchange membranes were employed for the electrodialytic removal of 0.1 M NaCl aqueous solution at a constant applied voltage. It is found that the reported membranes could be the promising candidate for NaCl removal via electrodialysis.
阴离子交换膜用途广泛，如今有许多应用，从水处理到传感材料。开展了由溴化聚（2,6 - 二甲基 - 1,6 - 亚苯基氧化物）（BPPO）和甲基（二苯基）膦（MDPP）制备用于电渗析的阴离子交换膜（AEMs）的工作。通过改变膜基质中MDPP的含量，可以测量所制备膜的物理化学性质和电化学性能。讨论了与从水中去除氯化钠相关的季鏻基团的影响。所制备的膜具有离子交换容量（IEC）1.09 - 1.52 mmol/g、吸水率（W）17.14% - 21.77%、线性膨胀率（LER）7.96% - 11.86%、拉伸强度（TS）16.66 - 23.97 MPa以及断裂伸长率（）485.57% - 647.98%。将所制备的阴离子交换膜用于在恒定施加电压下电渗析去除0.1 M氯化钠水溶液。结果发现，所报道的膜有望成为通过电渗析去除氯化钠的候选材料。
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