New Polymerization Reactions

新的聚合反应

• 批准号: 0848855
• 负责人: Kenneth Shea
• 金额: $ 47.9万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0848855&HistoricalAwards=false
• 关键词: New; Polymerization; Reactions

This project is concerned with the development of new chemical reactions for the repetitive formation of sp3-sp3 carbon-carbon bonds. The products of these reactions, carbon backbone polymers, comprise some of the most important synthetic materials known. Traditional methods for polymer synthesis involve polymerization of alkenes. The project will study new reactions involving the polymerization of ylides and diazoalkane monomers with Lewis acidic catalyst/initiators. These reactions build the carbon backbone one carbon at a time and provide exceptional control over molecular weight and polydispersity. Novel polymer topologies, not readily available by conventional olefin polymerization, will also be studied using these new reactions. With this award, the Organic and Macromolecular Chemistry Program is supporting the research of Professor Kenneth J. Shea of the Department of Chemistry at the University of California, Irvine. Professor Shea's research efforts revolve around synthetic and mechanistic organic chemistry and span polymers, functional materials and catalysis. His research is of broad interest to polymer scientists for establishing structure/property relationships, for synthesizing polymer compatibilizing and blending agents, as standards for molecular weight calibration, and as surface modifiers for commodity plastics. His method can also be used to synthesize polymers for testing fundamental concepts of polymer physics such as the influence of topology on polymer diffusion, melt behavior, crystallization and solution viscosity. In addition, since many olefins do not readily polymerize, these alternative synthetic methods can serve as an entry to completely new substances and properties. Collaborations with the major producers of polyethylene have been established which will lead to extensive characterization of the properties of these materials.

该项目涉及开发用于重复形成sp3-sp3碳碳键的新化学反应。 这些反应的产物，碳骨架聚合物，包括一些已知的最重要的合成材料。 聚合物合成的传统方法涉及烯烃的聚合。该项目将研究叶立德和重氮烷单体与刘易斯酸性催化剂/引发剂聚合的新反应。 这些反应一次构建一个碳的碳骨架，并提供对分子量和多分散性的卓越控制。 新的聚合物拓扑结构，不容易通过传统的烯烃聚合，也将使用这些新的反应进行研究。有了这个奖项，有机和高分子化学计划是支持教授肯尼思J.谢伊的化学系在加州，欧文大学的研究。 Shea教授的研究工作围绕合成和机械有机化学和跨度聚合物，功能材料和催化。 他的研究引起了聚合物科学家的广泛兴趣，用于建立结构/性能关系，用于合成聚合物相容剂和共混剂，作为分子量校准的标准，以及作为商品塑料的表面改性剂。 他的方法也可用于合成聚合物，以测试聚合物物理学的基本概念，如拓扑结构对聚合物扩散，熔体行为，结晶和溶液粘度的影响。 此外，由于许多烯烃不容易分解，这些替代的合成方法可以作为一个全新的物质和性质的入口。 与聚乙烯主要生产商的合作已经建立，这将导致这些材料的性能的广泛表征。