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

0129082Sokolov这项为期三年的美法聚合物科学合作奖涉及阿克伦大学和巴黎南大学的研究人员和学生。阿列克谢·索科洛夫和克里斯蒂安娜·阿尔巴-西蒙斯科分别领导着美国和法国的努力。他们将使用光和中子散射技术、介电测量和热量测量来进行聚合物动力学的实验研究。这些研究集中在聚合物体系中动力学对分子结构、压力和老化的依赖性。这四种实验技术覆盖了非常宽的频率范围，并在分子的快速运动和宏观性质之间，在聚合物体系中的动力学和热力学参数之间架起了一座桥梁。阿克伦团队将进行光散射实验。此外，劳厄·朗之万研究所的中子散射实验和巴黎大学的介电和量热测量也得到了补充。该奖项代表了美国方面向NSF和法国国家科学研究中心(CNRS)提出的联合建议。NSF将支付美国调查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。该项目在大型国际设施中培训研究生不同的技术。这项合作将促进对高频范围内聚合物动力学的了解，并为信息、计算机和通信技术中的高频应用开发新塑料。

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.