An Integrated Theoretical and Experimental Investigation of Free Radical Polymerization

自由基聚合的综合理论与实验研究

• 批准号: 9707495
• 负责人: Nicholas Turro
• 金额: $ 26万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-15 至 2001-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9707495&HistoricalAwards=false
• 关键词: Integrated; Theoretical; Experimental; Investigation; Free

The proposed experimental methods will allow: (1) the use of novel laser flash techniques for unprecedented levels of control of polymerizing systems; (2) measurement of concentrations of free radical polymerization living chains over a broad range of conditions by a multitechnique approach; (3) measurement of molecular weight distributions of living chains by a novel `photocopying` technique; (4) characterization of structures and dynamics of the radical end-groups; and (5) controlled generation of well-characterized monodisperse macroradicals to test fundamentals of polymer reaction kinetics by specific syntheses of monodisperse macroradicals. A range of theoretical predictions will thus be tested by these experiments. With this award, the Organic Dynamics Program and the Office of Multidisciplinary Activities are supporting the research of Drs. Nicholas J. Turro and Ben O'Shaughnessy of the Department of Chemistry at Columbia University. The project is an interdisciplinary joint experimental-theoretical effort with an object of obtaining a mechanistic understanding of free radical polymerization and the closely associated phenomena of interpolymeric reactions. The expertise of a photochemist and a theoretical polymer physicist will unite to allow theory to proceed in close collaboration with experiments employing novel methods to measure various fundamental properties of free radical prolymerization and other reacting polymer systems.

拟议的实验方法将允许：(1)使用新的激光闪光技术对聚合体系进行前所未有的控制；(2)通过多技术方法在广泛的条件下测量自由基聚合活性链的浓度；(3)通过新的‘影印’技术测量活性链的分子量分布；(4)表征自由基端基的结构和动力学；以及(5)控制生成表征良好的单分散大分子药物，以通过特定的单分散大分子药物的合成来测试聚合物反应动力学的基本原理。因此，这些实验将检验一系列理论预测。通过这个奖项，有机动力学项目和多学科活动办公室正在支持哥伦比亚大学化学系的Nicholas J.Turro博士和Ben O‘Shaughnessy博士的研究。该项目是一项跨学科的联合实验-理论工作，目的是从机理上了解自由基聚合以及与聚合反应密切相关的现象。一位光化学家和一位理论聚合物物理学家的专业知识将联合起来，允许理论与实验密切合作，使用新方法测量自由基缩聚和其他反应聚合物体系的各种基本性质。