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

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。此次合作充分利用了美国和意大利研究人员各自的优势。Mijovic博士的专业领域是反应系统的化学流变学和玻璃态的结构松弛。贝鲁奇博士的研究涵盖了水、气体和离子通过各种介质传输的基本原理，以及使用电化学阻抗谱作为电介质极化的基本探测。目前对聚合物介电性能的兴趣反映了它们在印制板电路、电子互连器件、雷达微波组件、固态电池和燃料电池中的应用日益增长。所提出的工作的主要目标是研究反应系统，从它们形成的那一刻起，通过它们的反应阶段，以形成三维网络为特征，以及这些网络在玻璃态下的后续行为。在精确定义的化学成分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。期望从这项研究中出现反应系统介电性质的全面图景。* * *

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. * * *