U.S.-France Cooperative Research: Influence of Pressure, Aging and Molecular Architecture on Polymer Dynamics

这项为期三年的美法高分子科学合作奖涉及阿克伦大学和巴黎南方大学的研究人员和学生。阿列克谢·索科洛夫（Alexei Sokolov）和克里斯蒂安·阿尔巴-西蒙内斯科（Christiane Alba-Simonesco）分别领导了美国和法国的努力。他们将使用光和中子散射技术，电介质和量热测量进行聚合物动力学的实验研究。研究的重点是动力学在聚合物体系中的依赖，对分子结构，压力和老化。这四种实验技术涵盖了非常广泛的频率范围，并在聚合物系统的快速分子运动和宏观性质之间、动态和热力学量之间提供了一座桥梁。阿克伦团队将进行光散射实验。这是由劳厄朗格万研究所的中子散射实验和在巴黎南部大学进行的介电和量热测量所补充的。该奖项代表了美国方面向美国国家科学基金会和法国国家科学研究中心（CNRS）联合提出的建议。美国国家科学基金会将承担美国研究人员和学生的旅费和生活费。CNRS将支持法国与会者访问美国。该项目在大型国际机构培训研究生不同的技术。此次合作将促进对高频范围内聚合物动力学的理解，并开发用于信息、计算机和通信技术高频应用的新塑料。

0129082SokolovThis three-year award for U.S.-France collaboration in polymer sciences involves researchers and students at the University of Akron and University of Paris Sud. Alexei Sokolov and Christiane Alba-Simonesco lead the US and French efforts respectively. They will perform experimental studies of polymer dynamics using light and neutron scattering techniques, dielectric and calorimetric measurements. The investigations focus on dependence of dynamics in polymeric systems, on molecular architecture, pressure, and aging. The four experimental techniques cover extremely broad frequency ranges and provide a bridge between fast molecular motion and macroscopic properties, between dynamic and thermodynamic quantities in polymeric systems. The Akron team will perform the light scattering experiments. This is complemented by neutron scattering experiments at the Institute Laue Langevin and dielectric and calorimetric measurements performed at University of Paris Sud.This award represents the US side of joint proposals to the NSF and the French National Center for Scientific Research (CNRS). NSF will cover travel funds and living expenses of the US investigators and students. The CNRS will support visits to the US of the French participants. The program trains graduate students on different techniques at large international facilities. The collaboration will advance understanding of polymer dynamics in the high frequency range and development of new plastics for high frequency applications in information, computer and communication technologies.