ACT/SGER: Optimizing the Structure of Polymeric Composites for Enhanced Electrical and Mechanical Performance

ACT/SGER：优化聚合物复合材料的结构以增强电气和机械性能

• 批准号: 0442080
• 负责人: Anna Balazs
• 金额: --
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-10-01 至 2007-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0442080&HistoricalAwards=false
• 关键词: ACT; SGER; Optimizing; Structure; Polymeric

Using theory and simulation, our overall goal is to design lightweight composites that exhibit optimal electrical conductivity and mechanical integrity. These characteristics are vital in the fabrication of portable and durable electronic devices. The materials to be examined consist of organic polymers and inorganic nanoparticles. The resulting nanocomposites integrate the flexibility and processability of the polymers and the electromagnetic properties of the particles. We specifically focus on mixtures that involve blends of different polymers, as well as the nanoparticles. In these systems, we can exploit the polymer-polymer, polymer-particle and particle-particle interactions to manipulate the structure of the material. In particular, our aim is to harness these interactions to drive the nanoparticles to form percolating structures at very low volume fractions. Such percolating networks not only allow current to flow through the material, but also reinforce the polymeric matrix. A reduction in the percolation threshold results in both weight and cost reductions.It is anticipated that the findings will allow us to establish fundamental correlations between the nanoscopic structures of the components, the mesoscopic morphology of the mixture, and the macroscopic electrical/mechanical properties of the material. The studies will also elucidate how processing affects both the morphology and macroscopic properties. By engaging in these research activities, the students and post-doctoral fellows involved in the project will obtain a background and training in nanotechnology. This expertise will make them better qualified to meet the demand within industry, national labs and academics. The Approaches to Combat Terrorism Program in the Directorate for Mathematics and Physical Sciences supports new concepts in basic research and workforce development with the potential to contribute to national security. In particular, the findings will facilitate the development of flexible, lightweight and high energy density nanocomposites, which can be utilized in fabricating portable electronic and photonic devices.

利用理论和模拟，我们的总体目标是设计具有最佳导电性和机械完整性的轻质复合材料。这些特性对于制造便携式耐用电子设备至关重要。待检查的材料由有机聚合物和无机纳米粒子组成。所得纳米复合材料结合了聚合物的灵活性和可加工性以及颗粒的电磁特性。我们特别关注涉及不同聚合物混合物以及纳米颗粒的混合物。在这些系统中，我们可以利用聚合物-聚合物、聚合物-颗粒和颗粒-颗粒的相互作用来操纵材料的结构。特别是，我们的目标是利用这些相互作用来驱动纳米粒子以非常低的体积分数形成渗透结构。这种渗透网络不仅允许电流流过材料，而且还增强了聚合物基质。渗透阈值的降低会导致重量和成本的降低。预计这些发现将使我们能够建立组件的纳米结构、混合物的介观形态以及宏观电/机械性能之间的基本相关性。材料。这些研究还将阐明加工如何影响形态和宏观特性。通过参与这些研究活动，参与该项目的学生和博士后研究员将获得纳米技术的背景和培训。这些专业知识将使他们更有资格满足行业、国家实验室和学术界的需求。数学和物理科学局的打击恐怖主义方案方案支持基础研究和劳动力发展方面的新概念，有可能为国家安全做出贡献。特别是，这些发现将促进柔性、轻质和高能量密度纳米复合材料的开发，这些复合材料可用于制造便携式电子和光子设备。