CAREER: Structure-property-processing Relations for Aggregation-resistant Graphene

职业：抗聚集石墨烯的结构-性能-加工关系

• 批准号: 1451756
• 负责人: Micah Green
• 金额: $ 35.58万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2019-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1451756&HistoricalAwards=false
• 关键词: CAREER; Structure; property; processing; Relations

The research objective of this Faculty Early Career Development (CAREER) project is to test the broad hypothesis that graphene may be rendered aggregation-resistant by simultaneous exfoliation and non-covalent functionalization. This would facilitate use in a range of promising bulk material applications, and this would substantially improve upon existing graphene production techniques, which suffer from a range of problems (small-scale, compromising properties via defect generation, aggregation). This project will address these critical challenges through a number of research thrusts. These include (1) combining bulk intercalation techniques with stabilizer solutions, (2) the post-processing of dispersed pristine graphene to induce novel, aggregation-resistant morphologies, and (3) investigation of processing effects on graphene performance in conductive, low density composites and monoliths. If successful, the results of this research will yield techniques that are orders-of-magnitude more effective than prior methods in processing stabilized graphene. The proposed project also provides insight into how the processing technique (exfoliation, stabilization, spray drying) determines the structure (chemical functionality, surface coverage, morphology) and hence the properties (aggregation resistance, gas barrier, electrical percolation, composite enhancement). The development of scalable processing for pristine graphene is relevant to a wide range of multifunctional industrial materials including aerospace structural composites, sensors, supercapacitors, and flame-retardant textiles. The multifaceted educational plan includes (1) graduate, undergraduate, and high school student mentorship, (2) a new program designed to encourage engineers to pursue graduate studies, and (3) an expansion of the PI?s successful ?Science and Science Fiction? outreach course that aims to increase STEM interest at local high schools.

这个教师早期职业发展（CAREER）项目的研究目标是测试广泛的假设，即石墨烯可以通过同时剥离和非共价官能化来呈现抗聚集性。这将有助于在一系列有前景的块体材料应用中使用，并且这将大大改善现有的石墨烯生产技术，现有的石墨烯生产技术存在一系列问题（小规模、通过缺陷产生而损害性能、聚集）。 该项目将通过一系列研究重点来应对这些关键挑战。这些包括（1）将本体插层技术与稳定剂溶液相结合，（2）对分散的原始石墨烯进行后处理以诱导新颖的抗聚集形态，以及（3）研究加工对导电低密度复合材料和整料中石墨烯性能的影响。如果成功的话，这项研究的结果将产生比以前处理稳定石墨烯的方法更有效的技术。拟议的项目还提供了深入了解加工技术（剥离，稳定化，喷雾干燥）如何决定结构（化学功能，表面覆盖，形态），从而决定性能（抗聚集性，气体阻隔性，电渗透，复合增强）。原生石墨烯的可扩展加工的发展与广泛的多功能工业材料有关，包括航空航天结构复合材料，传感器，超级电容器和阻燃纺织品。多方面的教育计划包括（1）研究生，本科生和高中生导师，（2）一个新的计划，旨在鼓励工程师攻读研究生课程，（3）扩大PI？成功了吗？科学与科幻？外展课程，旨在提高当地高中对STEM的兴趣。