超分子化合物构筑的碱金属离子传输膜的制备与性能  

PREPARATION AND PROPERTIES OF ALKALI CATIONS TRANSPORT MEMBRANES CONSTITUTED FROM SUPRAMOLECULES

作　　者：刘帅[1,2] 王丽华[1] 刘必前[1] 

机构地区：[1]中国科学院化学研究所新材料实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《高分子学报》2013年第7期862-869,共8页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号20704041);国家重点基础研究发展计划(973项目;项目号2009CB623407);中国科学院王宽诚教育基金会和中国科学院青年创新促进会资助项目

摘　　要：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+.11-Bromo-1-undecene, benzo-15-crown-5, methyl gallate and other reagents were used as raw materials, a kind of supramolecular compound named 2-（1-methylhydroxymethyl） [ 1, 4, 7, 10, 13-pentaoxabenzocyclopentadecane ] -3,4,5-tris- [ 4- （ 10-undecen-1 -oxo ） benzyloxy ] benzoate was synthesized. It was then grafted onto the surface of polyacrylonitrile （PAN） micro porous membranes by UV irradiation for preparing a new alkali-cation transport composite membrane. The grafting volume is 3. 025 mg/cm2. ATR- FTIR, SEM and AFM were used to test the surface and the cross-section structure of the ion transport membranes. The results showed that the supramolecular compound could form columnar structure by selfassembly on the surface of PAN membranes as a dense skin. The ion transport property of the membrane was detected by a self-designed equipment. By comparison of non-functional material （acrylic acid） grafted membrane （CG membrane） and supramolecular compound grafted experiments, the data showed that the new ion transport membrane is able to identify alkali cations such as Li^＋ ,Na^＋ and K^＋ and the order of transport capacity is Na^＋ 〉 K^＋ 〉 Li^＋ .

关 键 词：冠醚 碱金属 紫外光接枝 离子传输膜 

分 类 号：TB383.2[一般工业技术—材料科学与工程]