Theory of Reacting Polymer Systems

聚合物体系反应理论

• 批准号: 9816374
• 负责人: Ben O'Shaughnessy
• 金额: $ 19.9万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-15 至 2002-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9816374&HistoricalAwards=false
• 关键词: Theory; Reacting; Polymer; Systems

9816374O'ShaughnessyTheoretical research will be conducted on the reaction dynamics of free radical polymerization and chemisorption at polymer interfaces. The object of this renewal proposal is twofold: extend earlier work on steady-state models of free-radical polymerization to non-steady state dynamics, and study chemisorption of multifunctionalized polymer chains onto functionalized solid surfaces from dilute solutions and from melts. The reaction dynamics of free radical polymerization is driven by the competition between radical formation and radical termination processes, which are in turn driven by the statics and dynamics of the product polymer chains. The proposed research will be coordinated with an interdisciplinary experimental free-radical polymerization at Columbia supported by the NSF Chemistry Division, and with a program in polymer chemisorption conducted at the SUNY Stony Brook MRSEC.%%%Reacting polymer systems are of great technological importance, being central to many applications of polymer synthesis and processing in the chemical, microelectronics, automotive, and aerospace industries. They also play a major role in biology, because many chemical processes in living organisms involve reactive species incorporated into complex macromolecules. The object of this research is to advance our understanding and ability to predict the reaction kinetics of polymers in the two areas of free-radical polymerization and interfacial chemisorption. This improved understanding of chemical reaction rates should enhance our ability to tailor polymer properties by improved synthesis and processing techniques.***

[98163740] o’shaughnessy .对高分子界面自由基聚合和化学吸附的反应动力学进行理论研究。这一更新提议的目的是双重的：将自由基聚合的稳态模型扩展到非稳态动力学，并研究从稀释溶液和熔体中多功能化聚合物链在功能化固体表面上的化学吸附。自由基聚合的反应动力学是由自由基形成和自由基终止过程之间的竞争驱动的，而自由基形成和自由基终止过程又由产物聚合物链的静力学和动力学驱动。拟议的研究将与哥伦比亚大学由美国国家科学基金会化学部支持的跨学科自由基聚合实验以及纽约州立大学石溪分校MRSEC进行的聚合物化学吸附项目相协调。反应聚合物系统具有重要的技术意义，是化学、微电子、汽车和航空航天工业中聚合物合成和加工的许多应用的核心。它们在生物学中也扮演着重要的角色，因为生物体中的许多化学过程都涉及到将反应性物质结合到复杂的大分子中。本研究的目的是提高我们对自由基聚合和界面化学吸附两个领域的聚合物反应动力学的理解和预测能力。通过改进合成和加工技术，提高对化学反应速率的理解将增强我们定制聚合物性能的能力