Sensors: Polymer Materials with Integrated Deformation Sensors

传感器：具有集成变形传感器的聚合物材料

• 批准号: 0428208
• 负责人: Christoph Weder
• 金额: --
• 依托单位: Case Western Reserve University
• 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: 2004-09-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0428208&HistoricalAwards=false
• 关键词: Sensors; Polymer; Materials; Integrated; Deformation

This Sensors and Sensor Networks (Sensors) Individual Investigator (SII) grant provides funding for the development of processes that allow the production of new polymer materials with integrated mechanical deformation sensors. The targeted materials are based on the incorporation of small amounts of fluorescent dyes into conventional polymers. The sensing mechanism relies on the formation of nanoscale aggregates of these dyes in the polymer matrix. It further exploits that mechanical deformation can transform the nanophase-separated systems into molecular mixtures. Because the dye molecules are tailored to form excimers when aggregated, this phase transition is concomitant with a shift of the dyes' fluorescence color. This experimental research program encompasses (i) the development of fluorescent sensor molecules, which are rationally designed for the targeted sensing principle, (ii) the investigation of the phase behavior of blends of these sensor molecules and selected, technologically relevant polymers, and (iii) the development of protocols, which allow for the production of adequate polymer/dye nanocomposites by conventional melt-processing techniques. To demonstrate the value of the novel sensing scheme, a complete system consisting of material, optical detection module, and data analysis interface will be assembled.The primary goals of this work are to determine how polymer/sensor nanocomposites can be reliably produced by conventional fabrication techniques, and how their supramolecular architecture, and therewith fluorescence color, changes as a function of external stimulus. If successful, the results of this research will lead to a predictive understanding of the thermodynamic and kinetic aspects of nanoparticle (de)formation in blends of polymers and low-molecular, organic guest molecules.If successful, the resulting knowledge may provide a broad intellectual basis for the future design, processing and application of advanced functional nanomaterials. The new platform of polymers with built-in sensors has the potential to enable a variety of technologically relevant applications that range from early failure indicators in structural materials to tamper-resistant packaging.

该传感器和传感器网络（传感器）个人研究者（SII）资助为开发允许生产带有集成机械变形传感器的新型聚合物材料的工艺提供资金。目标材料是基于将少量荧光染料掺入常规聚合物中。传感机制依赖于这些染料在聚合物基质中形成纳米级聚集体。它进一步利用了机械变形可以将纳米相分离系统转化为分子混合物。因为染料分子在聚集时被定制以形成准分子，所以这种相变伴随着染料的荧光颜色的偏移。该实验研究计划包括：（i）荧光传感器分子的开发，其针对目标传感原理进行合理设计，（ii）这些传感器分子和选定的技术相关聚合物的共混物的相行为的调查，以及（iii）协议的开发，其允许通过常规熔融加工技术生产足够的聚合物/染料纳米复合材料。为了证明新的传感方案的价值，一个完整的系统，包括材料，光学检测模块，和数据分析接口将assembled.The主要目标的这项工作是确定如何聚合物/传感器纳米复合材料可以可靠地生产通过传统的制造技术，以及它们的超分子结构，并随之荧光颜色，作为一个功能的外部刺激的变化。如果成功的话，这项研究的结果将导致预测性理解的热力学和动力学方面的纳米粒子的形成（去）在聚合物和低分子，有机客体分子的共混物。如果成功的话，所产生的知识可能提供一个广泛的知识基础，为未来的设计，加工和应用先进的功能纳米材料。具有内置传感器的聚合物新平台有可能实现各种技术相关应用，从结构材料的早期故障指示器到防篡改包装。