Two-State Living Coordinative Olefin Polymerization

二态活性烯烃配位聚合

• 批准号: 1152294
• 负责人: Lawrence Sita
• 金额: $ 51.7万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-04-01 至 2015-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1152294&HistoricalAwards=false
• 关键词: Two; State; Living; Coordinative; Olefin

With this award from the Chemical Catalysis Program, Professor Lawrence R. Sita from University of Maryland at College Park will work on discovering and developing new paradigms, catalysts and polymerization processes that can be used to significantly expand the range of polyolefins and their end-use applications in support of new technologies. The primary hypothesis that will be pursued is that different categories of fast and reversible dynamic processes that are competitive with chain-growth propagation can be introduced to establish two-state living coordination olefin polymerization in which the relative rates of the dynamic process and propagation can be brought under external control to direct polyolefin production over a spectrum that is delineated by two extreme boundary structures. Several new paradigms will be conceived and developed in order to remove existing restrictions that are presently imposed by classical approaches that are based on a one-to-one correlation between catalyst structure and polyolefin product.In addition to the scientific impact this work will provide support for a continued scientific and economic competitive position of the U.S. in the global polyolefin and chemical industries and support training of future generation of scientists and engineers for science, technology, engineering, and mathematics (STEM) related careers. Importantly, the discovery and development of new technological inventions and innovations of commercial value will support the national economy.

获得化学催化项目的这一奖项后，马里兰大学帕克分校的Lawrence R.Sita教授将致力于发现和开发新的范例、催化剂和聚合工艺，这些工艺可用于显著扩大聚烯烃及其最终用途的范围，以支持新技术。主要的假设是，可以引入不同类别的与链增长增长竞争的快速和可逆的动态过程，以建立两态活性配位烯烃聚合，其中动态过程和增长的相对速率可以受到外部控制，以在由两个极端边界结构描绘的光谱上指导聚烯烃的生产。将构思和开发几个新的范例，以消除目前由基于催化剂结构和聚烯烃产品之间一一关联的经典方法施加的现有限制。除了科学影响之外，这项工作还将支持美国在全球聚烯烃和化工行业继续保持科学和经济竞争地位，并支持未来一代科学家和工程师的科学、技术、工程和数学(STEM)相关职业的培训。重要的是，新技术发明和具有商业价值的创新的发现和发展将支持国民经济。