EAGER: Exfoliated and Oriented Graphene Channel-Enabled Multifunctional Nanocomposite Fibers

EAGER：剥离和定向石墨烯通道启用的多功能纳米复合纤维

• 批准号: 1902172
• 负责人: Kenan Song
• 金额: $ 19.82万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-03-01 至 2022-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1902172&HistoricalAwards=false
• 关键词: EAGER; Exfoliated; Oriented; Graphene; Channel

Composite fibers made by including graphene in polymers offer a solution to many materials challenges where low density and high performance requirements limit the current applications. Theoretical predictions of materials performance show promise for polymer nanocomposites, but experimentally manufactured fibers to date have not demonstrated the efficiency and performance levels of theoretical predictions. This EArly-concept Grants for Exploratory Research (EAGER) award supports research to close the gap between theoretical predictions and attainable materials performance, through the fabrication of a novel type of composite fibers. A customized fabrication apparatus will be used to demonstrate the capability to produce hierarchical microstructures in thin fibers, and to characterize the fundamental processing-property relationships in the resulting materials. These composite fibers can be tailored for a variety of functions, including mechanical dampening, impact resistance, heat exchange, electrical conductivity, sound absorption, drug loading/release, and water treatments. This research contributes new knowledge to the manufacturing process of composite fibers and will promote the progress of science and the development of new materials for industry and national defense needs. The research utilizes a multi-disciplinary approach, including polymer physics, mechanics, heat transfer, manufacturing, and materials science. This integrated approach will have a positive impact on engineering education and help engage the participation of students from underrepresented groups.The objective of this research is scalable manufacturing of co-axial polymer/graphene composite fibers with a uniformly distributed, continuously bridged and anisotropically oriented single-layer graphene channel. The research team will fabricate the polymer-graphite hybrid formations, perform multi-phase fiber spinning processes, and characterize the mechanical and thermal properties. Graphene exfoliations and orientations will be studied via relative movement of molecular chains on top and bottom layers of the graphene channel. The relationship among the graphene morphology evolution, the interfacial interactions, and the constraining effects and shear forces from surrounding polymer chains will be studied. This award supports the research of graphene morphologies to develop multifunctional nanocomposite fibers, filling a knowledge gap on the mechanism(s) of graphene exfoliation and orientation as a function of fiber spinning parameters and material configurations.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

通过在聚合物中包括石墨烯制成的复合纤维为许多材料挑战提供了一种解决方案，而低密度和高性能要求限制了当前应用。材料性能的理论预测显示出对聚合物纳米复合材料的希望，但是迄今为止，实验制造的纤维尚未证明理论预测的效率和性能水平。通过制造一种新型的复合纤维，这项早期概念授予探索性研究（急切）奖（Eager）奖（Eager）奖励，以弥合理论预测和可实现的材料性能之间的差距。定制的制造设备将用于证明在薄纤维中产生层次微观结构的能力，并表征所得材料中基本的加工特制关系。这些复合纤维可以针对各种功能进行定制，包括机械抑制，抗冲击力，热交换，电导率，吸收声，药物加载/释放和水处理。这项研究为复合纤维的制造过程贡献了新知识，并将促进科学进步以及针对工业和国防需求的新材料的开发。该研究采用了多学科方法，包括聚合物物理学，力学，传热，制造和材料科学。 这种综合方法将对工程教育产生积极的影响，并帮助吸引来自代表性不足的群体的学生的参与。这项研究的目的是可扩展的同轴聚合物/石墨烯复合纤维，具有均匀分布的，连续桥接的且具有偏射型为导向的单层层石化烯渠道。研究小组将制造聚合物 - 毛石杂种地层，执行多相纤维旋转过程，并表征机械和热性能。石墨烯去角质和方向将通过分子链在石墨烯通道的顶层和底层上的相对运动进行研究。将研究石墨烯形态进化，界面相互作用以及周围聚合物链的约束作用和剪切力之间的关系。该奖项支持石墨烯形态的研究，以开发多功能的纳米复合纤维，填补了关于石墨烯去角质和方向的机制的知识差距，这是光纤旋转参数和材料配置的函数的函数。该奖项颁发了NSF的法定任务，并反映了通过评估的构成构成的概念，并反映了构成构成的构成商标。

项目成果

Reinforcing carbonized polyacrylonitrile fibers with nanoscale graphitic interface-layers

• DOI: 10.1016/j.jmst.2021.03.067
• 发表时间: 2021
• 期刊: Journal of Materials Science & Technology
• 影响因子: 10.9
• 作者: Rahul Franklin;Weiheng Xu;Dharneedar Ravichandran;Sayli Jambhulkar;Yuxiang Zhu;Kenan Song

Review of Fiber-Based Three-Dimensional Printing for Applications Ranging from Nanoscale Nanoparticle Alignment to Macroscale Patterning

• DOI: 10.1021/acsanm.1c01408
• 发表时间: 2021-08
• 期刊: ACS Applied Nano Materials
• 影响因子: 5.9
• 作者: Weiheng Xu;Yuxiang Zhu;Dharneedar Ravichandran;Sayli Jambhulkar;Mounika Kakarla;Mohammed Bawareth

Continuous Nanoparticle Patterning Strategy in Layer‐Structured Nanocomposite Fibers

• DOI: 10.1002/adfm.202204731
• 发表时间: 2022-06
• 期刊: Advanced Functional Materials
• 影响因子: 19
• 作者: Weiheng Xu;Rahul Franklin;Dharneedar Ravichandran;Mohammed Bawareth;Sayli Jambhulkar;Yuxiang Zhu

Hierarchically Structured Composite Fibers for Real Nanoscale Manipulation of Carbon Nanotubes

• DOI: 10.1002/adfm.202009311
• 发表时间: 2021-01
• 期刊: Advanced Functional Materials
• 影响因子: 19
• 作者: Weiheng Xu;Dharneedar Ravichandran;Sayli Jambhulkar;Yuxiang Zhu;Kenan Song

Bioinspired, Mechanically Robust Chemiresistor for Inline Volatile Organic Compounds Sensing

• DOI: 10.1002/admt.202000440
• 发表时间: 2020-08
• 期刊: Advanced Materials Technologies
• 影响因子: 6.8
• 作者: Weiheng Xu;Dharneedar Ravichandran;Sayli Jambhulkar;Rahul Franklin;Yuxiang Zhu;Kenan Song