自组装构建共价型聚电解质/M-L2O(EO)n超分子聚合物纳滤膜及性能研究

本项目通过与共价型聚电解质的层层自组装引入M-L2O(EO)n可逆配位超分子聚合物构建纳滤膜。采用紫外-可见（UV-Vis）、X射线光电子能谱分析（XPS）、表面z电位仪以及傅里叶转换红外光谱仪（FT-IR）明晰层层自组装中M-L2O(EO)n超分子聚合物的形成规律及影响因素；结合场致发射扫描电子显微镜（SEM）、原子力显微镜（AFM）、表面z电位仪、表面接触角测定仪、膜评价仪等仪器的研究分析结果阐明组装因素与膜结构及性能之间的内在联系；揭示共价型聚电解质/M-L2O(EO)n超分子聚合物纳滤膜对重金属离子的分离行为与机制。本项目的开展有利于进一步丰富和发展可逆配位超分子聚合物的形成理论、拓展配位超分子聚合物的应用领域，为纳滤膜的结构调控提供新的途径、有利于促进深入理解纳滤分离机制，具有十分重要的理论意义与应用价值。

M-L2O(EO)n reversible coordination supramolecules will be incorporated into multifilm by layer-by-layer assembling with covalent polyelectrolytes to prepare nanofiltration membranes. The formation rules of M-L2O(EO)n supramolecules and the factors affecting the supramolecules formation under the assemling conditions will be disclosed by Ultraviolet-visible spectra (UV-Vis）、X-Ray photoelectron spectroscopy (XPS)， Zeta potential measurement and Fourier transform infrared (FT-IR) spectra. The dependence of membranes structure and performances on the assembling conditions will also be investigated by Scanning electron microscope (SEM), Atomic force microscope (AFM), Zeta potential measurement, surface contact angle measurement and the nanofiltration evaluation cell. The filtration mechanism and performance for poisonous ions removal of covalent polyelectrolyte/M-L2O(EO)n nanofiltration membranes will also be revealed. The formation theory of reversible coordination supramolecule will be further enriched and the application area will be expanded by carring out these researches which also will provide new approaches for adjusting the structures of nanofitration membrane. The results of these experiments will deepen our knowledge of nanofiltration. In a word, the researches of this item have very important theoretical meaning and application values.