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

小行星9405461 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。 他们的研究课题是反应性聚合物和聚合物玻璃的介电研究。 这项合作利用了美国和意大利研究人员各自的优势。Mijovic博士的专长是反应体系的化学流变学和玻璃态结构松弛。 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，以及电化学阻抗谱作为介电极化的基本探针的使用。 目前对聚合物介电性能的兴趣反映了它们在印刷电路板电路、电子互连器件、雷达微波组件、固态电池和燃料电池中的日益增长的用途。 所提出的工作的主要目标是研究反应系统，从他们制定的那一刻起，通过他们的反应阶段，其特征在于形成一个三维网络，并在随后的行为，这些网络在玻璃态。 从一开始，在精确定义的化学成分的系统中监测网络响应的整个历史的概念还没有被探索。 反应系统的介电性能的综合图片预计将出现从这项研究。 * * *

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. * * *