含水分子集簇通道介孔纳米颗粒-反渗透复合膜的结构设计及制备

项目名称： 含水分子集簇通道介孔纳米颗粒-反渗透复合膜的结构设计及制备

项目编号： No.21276246

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 化学工业

项目作者： 朱桂茹

作者单位： 中国海洋大学

项目金额： 80万元

中文摘要： 含水通道沸石分子筛-反渗透（RO）复合膜是膜领域的研究热点。然而，由于沸石分子筛的形貌和孔道结构具有取向性，使沸石分子筛-RO复合膜中有效的水通道不易控制；另外，物理包埋的填充方式使沸石分子筛与聚合物之间未能形成强的相互作用，会在膜中造成缺陷，使截盐率下降。本课题针对该问题，采用水热法制备具有非取向性球形形貌和非取向性孔道结构的小粒径（<200nm）介孔氨基官能化二氧化硅（NH2-SiO2）。在界面聚合反应中使NH2-SiO2的氨基与油相中单体的酰氯基反应，使NH2-SiO2通过化学键合与聚合物产生紧密结合,避免造成膜缺陷，以获得具有水分子"集簇通道"的新型RO复合膜。利用各种表征手段，获得介孔纳米球形颗粒的形成机理、含水分子集簇通道介孔纳米颗粒-RO复合膜的成膜机理以及介孔作为水分子集簇通道的传递机理。本课题的实施不仅可以丰富膜科学基础理论，而且为新型RO复合膜的发展提供新思路和理论依据

中文关键词： 介孔；球形；薄层纳米复合膜；反渗透；膜

英文摘要： Zeolite-reverse osmosis (RO) membrane attracts widespread attention by its dramatically improved water permeability through the flow paths for water provided by the pores in the zeolites. However, the morphology and the pore structure of the zeolites nanoparticles are orient, which make the available water channel in the RO membrane to control difficultly. In addition, the nanoparticles did not form a strong bond with the polymer and defects formed resulting decline the rejection due to the physically embedded fill mode of zeolites. This project will prepare amino functionalized mesoporous silica (NH2-SiO2) by hydrothermal method. NH2-SiO2 will possess non-oriented of the pore structure and non-oriented spherical morphology with smaller diameter (<200nm). The amino group of NH2-SiO2 will react with acyl chloride group of trimesoyl chloride in hexane during the interfacial polymerization. In result, the strong interaction could be form between NH2-SiO2 and polymer through chemical bonding and membrane defects could be avoid. So that, the novel RO composite membrane containing cluster path for water could be obtained. The properties of mesoporous nano particles and mesoporous nano particle-RO composite membrane will be characterized by a variety methods in order to obtain the formation mechanism of mesoporous nano

英文关键词： mesoporous；spheres；thin film nanocomposite；reverse osmosis；membrane