EAGER/Collaborative Research: Processing and Characterization of Soft Active Nanoparticulate Composites

EAGER/合作研究：软活性纳米颗粒复合材料的加工和表征

• 批准号: 1349325
• 负责人: Zoubeida Ounaies
• 金额: $ 4.5万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2015-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1349325&HistoricalAwards=false
• 关键词: EAGER; Collaborative; Research; Processing; Characterization

This EArly-concept Grant for Exploratory Research (EAGER) collaborative research award provides funding for the generation of preliminary experimental data to support recent theoretical predictions on the macroscopic response of soft active nanoparticulate composites (SANCs) with tuned interphases, resulting in as much as one order of magnitude change in their mechanical response and two orders of magnitude change in their dielectric response. It is hypothesized that the interphase regions between the nanoparticle and the reinforcement matrix is responsible for these behaviors and can be tuned to deliver the desired response. These remarkable modifications of the macroscale response of nominally very similar materials call for an in-depth investigation of the electromechanical behavior of SANCs in terms of the geometry and properties of the underlying interphases. In this context, in line with recent theoretical results by the PIs, the objective of this exploratory project is to synthesize and test a model class of SANCs with interphases that are tailored to result in enhanced electromechanical properties. Novel fundamental mechanical experiments will be carried out to calibrate and validate recent multi-physics models and direct future research to optimum design envelopes for soft functional materials.If successful, the results of this research will provide quantitative knowledge of how interphasial phenomena affect the macroscopic response of SANCs, which has the potential to transform our ability to advance the technological use of this class of active materials for applications in significant fields such as energy and medicine. This project will also provide an initial understanding of ground rules to synthesize soft nanoparticulate composites with controlled interphases as well as a novel approach to directly measure the electromechanical properties of such interphases.

这项早期概念探索性研究资助 (EAGER) 合作研究奖为生成初步实验数据提供资金，以支持最近对具有调谐界面的软活性纳米颗粒复合材料 (SANC) 宏观响应的理论预测，导致其机械响应多达一个数量级的变化和介电响应两个数量级的变化。据推测，纳米颗粒和增强基质之间的界面区域是造成这些行为的原因，并且可以进行调整以提供所需的响应。名义上非常相似的材料的宏观响应的这些显着变化需要对 SANC 的机电行为进行深入研究，以了解底层界面的几何形状和特性。在此背景下，根据 PI 最近的理论结果，该探索性项目的目标是合成和测试具有界面的 SANC 模型类，这些界面经过定制以增强机电性能。将进行新颖的基础力学实验来校准和验证最近的多物理模型，并指导未来的研究以实现软功能材料的最佳设计范围。如果成功，这项研究的结果将提供有关相间现象如何影响 SANC 宏观响应的定量知识，这有可能改变我们推进此类活性材料在能源和医学等重要领域的技术应用的能力。该项目还将提供对合成具有受控界面的软纳米颗粒复合材料的基本规则的初步了解，以及直接测量此类界面机电性能的新方法。