高性能聚合物聚砜的绿色合成新策略

项目名称： 高性能聚合物聚砜的绿色合成新策略

项目编号： No.21274014

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 刘正平

作者单位： 北京师范大学

项目金额： 82万元

中文摘要： 高性能聚合物聚砜是一类非常重要的高分子，因其具有可在高温下长期使用等优异的综合性能，而被广泛应用于高科技、军工、航天和航空等领域。然而，该类聚合物的生产工艺存在能耗高、反应周期长等瓶颈问题始终未能得到实质性的解决，其昂贵的价格一直制约了其在一般民用领域的拓展。近年来，被誉为"可设计型"绿色溶剂的离子液体已在高分子合成领域中显示出其独特的应用潜力，将其作为反应介质引入高性能聚砜的制备中有望解决上述问题。本项目拟以（复合）离子液体（离子液体/两性离子）为介质合成高性能聚砜，重点研究其重要品种之一- - 双酚A型聚砜（PSF）；以动力学实验研究为手段，采用传统和现代相结合的测试与表征方法，系统地研究单体的反应活性和起始浓度、离子液体的种类、复合离子液体的组成、成盐剂的种类和用量、带水剂的种类和带水时间、聚合反应温度和聚合时间等反应条件对聚合反应的影响，发现聚合反应的规律，以实现高性能聚砜的绿色合成。

中文关键词： 离子液体；两性离子；亲核取代逐步聚合反应；高性能聚合物；聚砜

英文摘要： High performance polymer polysulfone, as a very important member of polymers, has been widely used as matrices for high-tech, military, aeronautic and astronautic fields due to their excellent comprehensive properties such as long-term use at high temperature. However, the bottleneck problems of high energy consumption and long reaction period which occured in the polymer producing process have not been solved yet, and the application of this material in civil field is seriously limited by the high price. Recently, ionic liquids, known well as designable and green solvents, have already revealed unique applications in polymeric synthesis. So using （composite）ionic liquids as reaction media for high performance polysulfone synthesis will overcome those problems mentioned above. In this project, we present a novel green synthetic method for high performance polysulfone, especially bisphenol A type polysulfone(PSF), by using ionic liquids or mixed ionic liquids (ionic liquid/zwitterion typed ionic liquid) as reaction medium. The influences of monomer reactivity, initial monomer concentration, species of cation and anionof ionic liquid, composition of ionic liquid and zwitterion typed ionic liquid, species and amount of salt-forming agent, species of azeotroping solvent, dehydration time, temperature and duration of

英文关键词： Ionic liquid；zwitterion；nucleophilic aromatic substitution step polymeriza；high performance polymers；polysulfone