SBIR Phase II: Novel Copolymers With an Improved Combination of High Permeability and High Selectivity for Use in Making Membranes for Gas and Vapor Separations

摘要弗里森9322727这一小型企业创新研究第二阶段项目将开发新型共聚物，将高渗透性和高选择性改进组合，用于制造气体和蒸汽分离膜。通常，具有高渗透率的膜具有较低的选择性，反之亦然。在第一阶段，成功地证明了制备具有更好的渗透性和选择性组合的共聚物的可行性。在第一阶段开发的新型取代聚乙炔共聚物显示出制膜所需的物理特性，并且以高(70%)的产率制备。在第二阶段，研究将集中在继续开发和评估基于第一阶段使用的单体的共聚物；合成和评估由更多单体制成的共聚物；评估用于工业重要分离的共聚物；开发由共聚物制造不对称中空纤维膜的程序；以及制造和测试小型中空纤维模块。目前膜的性能限制了膜系统在许多分离中的广泛使用。高渗透、高选择性膜的潜在商业应用包括从空气中生产氮气；生产医疗用氧气；从天然气中去除二氧化碳；从石油精炼流程中回收氢气；以及分离挥发性有机蒸气(例如丙烷/丙烯)。关键词：膜、气体分离、聚合物、高渗透、高选择性p：\sbir\yhashimi\Abstrals\9322727a.doc.

ABSTRACT Friesen 9322727 This Small Business Innovation Research Phase II project will develop novel copolymers with an improved combination of high permeability and high selectivity for use in making membranes for gas and vapor separations. Typically, membranes with high permeabilities have low selectivities, and vice versa. During Phase I, the feasibility of preparing copolymers with an improved combination of permeability and selectivity was successfully demonstrated. The novel substituted polyacetylene copolymers developed in Phase I displayed the physical characteristics necessary for making membranes and were prepared in high (70%) yield. During Phase II, research will focus on continuing to develop and evaluate copolymers based on monomers use in Phase I; synthesizing and evaluating copolymers made from additional monomers; evaluating the copolymers for industrially important separations; developing procedures for making asymmetric hollow-fiber membranes from the copolymers; and making and testing small hollow-fiber modules. The widespread use of membrane systems for many separations has been limited by the performance of current membranes. Potential commercial applications for high-permeability, high-selectivity membranes include the production of nitrogen from air; the production of oxygen for medical applications; the removal of carbon dioxide from natural gas; the recovery of hydrogen from petroleum-refining process streams; and the separation of volatile organic vapors (e.g., propane/propylene). Keywords: membrane, gas separation, polymer, high permeability, high selectivity p:\sbir\yhashimi\abstracts\9322727a.doc