双阳离子改性磺化聚醚醚酮电渗析膜的制备及性能研究  

Preparation and Properties of Dicationic Modified Sulfonated Poly(ether ether ketone)Electrodialysis Membranes

作　　者：谭茜 孙蓓 王月 吴娟 张全元[1] TAN Qian;SUN Bei;WANG Yue;WU Juan;ZHANG Quan-yuan(School of Material Science and Engineering,Hubei University,Wuhan 430062)

机构地区：[1]湖北大学材料科学与工程学院,武汉430062

出　　处：《胶体与聚合物》2023年第1期14-17,共4页Chinese Journal of Colloid & Polymer

基　　金：湖北省大学生创新训练项目(S202110512060)。

摘　　要：通过磺胺化反应,制备了具有不同含量的季铵季鏻双阳离子改性磺化聚醚醚酮电渗析膜(SPEEKx D-TPP)。对膜的核磁、红外、力学性能、吸水溶胀性能和电渗析分离效果进行了测试分析。结果表明,双阳离子的引入,使得膜的吸水率、溶胀度和离子交换容量均有所降低。SPEEK-10D-TPP膜的拉伸强度达到了75.3 MPa,但断裂伸长率有所下降。双阳离子对H+通量的影响较小,但渗透选择性大幅提高。SPEEK-5D-TPP和SPEEK-10D-TPP膜的渗透选择性分别为89.2和83.9,是SPEEK膜的5.5-5.8倍。Dicationic modified sulfonated poly(ether ether ketone)electrodialysis membranes(SPEEK-x D-TPP)with different contents were prepared by sulfonamide reaction.1H NMR,FTIR,mechanical properties,water uptake swelling ratio,and electrodialysis separation performance of the membranes were characterized and analyzed.The results showed that the water uptake,swelling ratio and ion exchange capacity of the membranes decreased.The tensile strength of SPEEK-10D-TPP reached 75.3 MPa,but the elongation at break decreased with the introduction of dicationic.The effect of dicationic content on H+flux was small,but the permselectivity was greatly improved.The permselectivity of SPEEK-5D-TPP and SPEEK-10D-TPP membranes is 89.2 and 83.9 respectively,which is 5.5-5.8 times of that of SPEEK membrane.

关 键 词：电渗析 离子交换膜 磺化聚醚醚酮 回收酸 

分 类 号：TQ028[化学工程]