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采用苯并15冠5、没食子酸甲酯以及1-溴十一烯等物质为原料,合成超分子化合物2-(1-甲基羟甲基)-[1,4,7,10,13-苯并15冠5]-3,4,5-三[4-(10-十一烯-1-羰基)苄氧基]苯甲酸酯.然后用紫外光接枝法将其接枝到聚丙烯腈(PAN)微孔膜表面,构筑具有离子传输功能的离子传输复合膜,接枝量为3.025 mg/cm2.通过ATR,XPS,SEM以及AFM等手段对离子传输膜的结构性能进行表征.结果表明,这种超分子化合物在PAN膜的表面自组装成柱状通道,并形成致密皮层.采用自行设计的膜运输装置对膜的离子识别和运输功能进行评测.通过与非功能材料(丙烯酸)接枝膜的对比,可以认为本文制备的离子识别膜可以选择性识别和运输碱金属阳离子,其运输能力顺序为Na+>K+>Li+.
Using benzo 15 crown 5, methyl gallate and 1-bromoundecene as raw materials, the synthesis of supramolecular compounds 2- (1-methylhydroxymethyl) - [1,4,7,10,13- Benzo-15-crown-5] -3,4,5-tris [4- (10-undecene-1-carbonyl) benzyloxy] benzoate and then grafted onto the poly Acrylonitrile (PAN) microporous membrane to construct an ion-transporting composite membrane with ion transport capacity of 3.025 mg / cm2.The structures of ion transport membranes were characterized by means of ATR, XPS, SEM and AFM. The results showed that the supramolecular compound self-assembled into columnar channels on the surface of PAN membrane and formed a dense cortex. The membrane transporters were designed and their functions of ion recognition and transport were evaluated. By comparing with nonfunctional materials (acrylic) The comparison of grafted films shows that the ion-recognition membranes prepared in this paper can selectively recognize and transport alkali metal cations, and the order of their transport ability is Na +> K +> Li +.