An Integrated Theoretical and Experimental Investigation of Free Radical Polymerization

提出的实验方法将允许：(1)使用新型激光闪光技术对聚合系统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链的浓度；(3)通过一种新的“复印”技术测量活链的分子量分布；(4)自由基端基的结构和动力学表征；(5)控制生成表征良好的单分散自由基，通过特定的单分散自由基合成来测试聚合物反应动力学的基础。因此，一系列的理论预测将通过这些实验得到检验。有了这个奖项，有机动力学计划和多学科活动办公室正在支持博士的研究。哥伦比亚大学化学系的Nicholas J. Turro和Ben O’shaughnessy说。该项目是一个跨学科的联合实验-理论努力，目的是获得自由基聚合的机理理解和密切相关的聚合间反应现象。光化学家和理论聚合物物理学家的专业知识将联合起来，使理论与实验密切合作，采用新颖的方法来测量自由基聚合和其他反应聚合物系统的各种基本特性。

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.