电纺聚合物纳米纤维的复合功能化及其去除EOCs机理

项目名称： 电纺聚合物纳米纤维的复合功能化及其去除EOCs机理

项目编号： No.21477118

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 化学工业

项目作者： 廖桂英

作者单位： 中国地质大学（武汉）

项目金额： 87万元

中文摘要： 针对水体新兴有机复合污染日益严重的现实问题，本项目采用结构设计方法，选择表面带有功能基团的尼龙６、聚酰胺酸、聚乳酸、壳聚糖，通过静电纺丝技术制备单一或共混纤维，再采用合成的聚酰亚胺多孔聚合物，对电纺纤维进行复合功能化改性，制备一系列多功能的聚合物纳米纤维复合材料。纤维的小直径、大比表面积和高孔隙率有利于污染物的去除；同时负载在纤维表面的有机多孔聚合物成为分布在电纺纤维材料中的多功能捕捉器，其结构中存在大量的微孔以及修饰后的化学活性位点有利于提高对复合有机污染物的捕捉。研究电纺纤维、多孔聚合物及其复合功能化材料的结构形貌，以及去除EOCs的性能；考察不同的复合功能化纳米纤维材料的作用机制，探索相应的反应途径、动力学特征和功能化协同去除机理，从而提升微污染物去除效能，为新型纳米环境材料的研发和新兴微污染有机物的去除提供新的方法和理论基础。

中文关键词： 电纺；纳米纤维；有机多孔聚合物；新兴有机污染物；复合功能化

英文摘要： As for the increasingly serious pollution of emerging organic contaminants (EOCs) in water, a structural design method is used in this study. Firstly, the fibers of nylon 6, polyamide acid, polylactic acid and chitosan with functional groups were prepared by electropinning. Secondly, the synthesized polyimide porous organic polymer was used to modify the electrospun fiber. Thus, a series of multi-functional polymer nanofiber composite materials were prepared. The small diameter, large specific surface area and high porosity of the fibers are beneficial to remove the pollutants. The porous organic polymer loaded on the surface of the fibers will be acted as the multi-functional trap in the fibrous composites, because their many micropores and modified chemical active sites are contribute to capture composite organic pollutants. The structure and morphology of the electrospun fiber, polyimide porous organic polymer and their compound functional materials,and the treatability of EOCs were studied. The reaction mechanism of different compound functional materials was examined, and the corresponding reaction path, kinetic characteristic and multi-functional synergistic treatability mechanism were explored,which enhance the removal efficiency of micropollutants and provide a new method and theoretical foundation for the research of novel environmental nano-materials and treatability of emerging organic micropollutants.

英文关键词： electrospinning;nanofiber;porous organic polymer;emerging organic contaminants (EOCs);compound functionalization