阶层粗糙表面多孔纤维材料的制备和非筛分油水分离

本项目针对解决我国含油废水污染的油水分离问题，开展探索新型高效油水分离材料的制备及界面行为的研究。将以三维多孔纤维材料为骨架，在其表面可控组装纳米粒子构成阶层粗糙表面结构，协同有机低表面能物质修饰表面，制备多尺度纳微粗糙结构的三维多孔复合材料。通过调控纳米粒子粒径、纳微表面结构和表面修饰改性等途径实现表面的特殊浸润性，并进一步研究其在水下液-液-固界面的浸润行为和对非筛分油水分离的影响，进而优化材料结构，增强破乳性能，解决传统聚结材料对油水乳液分离效率低的问题。本项目的目标是实现绿色、高通量、高效率聚结分离材料的制备，研究这种新型纳米材料在环境保护领域的应用，对于解决我国日益严重的水资源缺乏和水污染的问题具有十分重要的意义。

This project aims to develop and study a new type of oil/water separation surfaces and there wetting behavior, in order to provide better solutions for oil polluted water treatment in oil field. Hierarchically structured surface will be constructed by nanoparticle self-assembly. With 3-dimentional porous supporting materials as the framework and organic low surface energy materials as the surface modifying agents, multi-scale micro-nano structured inorganic-organic composites will be fabricated. The special wetting behavior of the composite surfaces will be achieved through the control of nanoparticle size, micro-nano surface structure and surface modification. The wetting behavior of oil on the composite surfaces underwater will be also studied to find its correlation with oil-water separation. As a result, the material will be optimized to increase its ability to separate emulsified oil from water with high efficency. The project is of significance to help solve China's growing water scarcity and pollution problem. It is innovative because it takes advantages of the green, low-energy consuming coalescence separation for environmental protection, which is to be enhanced by the materiel’s special wetting property resulted from the hierarchically roughened micro-nano structure purposely designed.