Selective Ceramic-Supprted Polymer Membranes

该项目的主要目标是准备和 无机高分子分离膜的研究进展 流程. 这些复合材料应结合联合收割机的结构 无机膜的强度具有高选择性， 聚合物品种。 制作将从乙烯基开始 无机膜基材硅烷化，然后游离 在这些乙烯基部分表面上的自由基接枝聚合 网站. 最终复合材料的性能可以改变 通过无机载体的结构（例如孔 大小），移植部位的密度，单体的选择 种类和聚合的反应条件。 将测试膜的水力渗透性和 基本分离性能 某些膜过程非常适合于分离 涉及稀释溶液，如纯化， 生物分子的浓缩或重金属的去除 从废水流中。 其他人喜欢渗透蒸发 挥发性有机混合物有可能取代 蒸馏作为分离方法。 材料 如果膜的预期潜力 分离方法，以解决重要的环境和 工业问题是要实现，如果美国 是继续作为生产和销售的领导者， 全世界的膜 陶瓷支撑的聚合物杂化物 膜有助于这一努力。

The Main objective of this project is the preparation and development of inorganic-polymeric membranes for separation processes. These composites should combine the structural strength of inorganic membranes with the high selectivity of the polymeric varieties. Fabrication will start with a vinyl silanation of an inorganic membrane substrate followed by free radical graft polymerization onto these vinyl moiety surface sites. Properties of the final composite can be altered through the structure of the inorganic support (e.g. pore size), the density of graft sites, choice of monomeric species, and the reaction conditions for the polymerization. Membranes will be tested for hydraulic permeability and for basic separation performance. Certain membrane processes are well-suited to separations involving dilute solutions like the purification and concentration of biomolecules or the removal of heavy metals from wastewater streams. Others like pervaporation of volatile organic mixtures have the potential to replace distillation as the method of separation. Materials development is essential if the expected potential of membrane separation methods to address important environmental and industrial problems is to be realized and if the United States is to continue as a leader in the production and sales of membranes worldwide. The ceramic-supported polymeric hybrid membranes contribute to this effort.