U.S.-Italy Cooperative Research: Reaction Kinetics and Structural Relaxations in Polymer Networks by Dielectric Measurements

美国-意大利合作研究：通过介电测量研究聚合物网络中的反应动力学和结构松弛

• 批准号: 9405461
• 负责人: Jovan Mijovic
• 金额: $ 1.35万
• 依托单位: Polytechnic University of New York
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1997-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9405461&HistoricalAwards=false
• 关键词: U.S.; Italy; Cooperative; Research; Reaction

9405461 Mijovic This award supports cooperative research between Jovan Mijovic, Polytechnic University, Brooklyn, and Francesco Bellucci, University of Naples, Italy. The subject of their research is dielectric studies of reactive polymers and polymeric glasses. The collaboration takes advantage of the respective strengths of the U.S. and Italian researchers. Dr. Mijovic's expertise is in the areas of chemorheology of reactive systems and structural relaxations in the glassy state. Dr. Bellucci's research has covered the fundamentals of transport of water, gas, and ions through various media, and the use of electrochemical impedance spectroscopy as a fundamental probe of dielectric polarization. Current interest in dielectric properties of polymers reflects their growing use in printed board circuitry, electronic interconnect devices, microwave assemblies for radars, solid state batteries and fuel cells. The principal objective of the proposed work is to investigate reactive systems from the moment they are formulated, through their reactive stage, characterized by the formation of a three- dimensional network, and during subsequent behavior of these networks in the glassy state. The concept of monitoring the entire history of the network response in a system of precisely defined chemical composition, from its inception, has not been explored. A comprehensive picture of dielectric properties of reactive systems is expected to emerge from this study. * * *

9405461 Mijovic该奖项支持布鲁克林理工大学的Jovan Mijovic和意大利那不勒斯大学的Francesco Bellucci之间的合作研究。他们的研究主题是反应性聚合物和聚合物玻璃的介电研究。这次合作利用了美国和意大利研究人员各自的优势。米约维奇博士的专长是反应体系的化学流变学和玻璃态的结构松弛。Bellucci博士的研究涵盖了水、气体和离子在各种介质中传输的基本原理，以及使用电化学阻抗谱作为介电极化的基本探头。目前人们对聚合物介电性能的兴趣反映出它们在印刷电路板电路、电子互连设备、雷达微波组件、固态电池和燃料电池中的应用日益广泛。这项拟议工作的主要目标是研究反应体系，从它们形成的那一刻起，到它们的反应阶段，以形成三维网络为特征，以及在这些网络随后在玻璃态下的行为。在一个精确定义化学成分的系统中监测网络反应的整个历史的概念，从一开始就没有被探索过。通过这项研究，有望全面了解反应体系的介电性质。***