Synthesis of Necklace-Shaped Boron and Boride Nanowires for Polymer Nanocomposite Applications

用于聚合物纳米复合材料应用的项链状硼和硼化物纳米线的合成

• 批准号: 0653651
• 负责人: Xiaodong Li
• 金额: $ 20万
• 依托单位: University South Carolina Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2011-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0653651&HistoricalAwards=false
• 关键词: Synthesis; Necklace; Shaped; Boron; Boride

This project aims to synthesize necklace-shaped boron and boride nanowires to realize the interlocking mechanism in polymer nanocomposites. The chemical vapor deposition (CVD) method will be employed to produce large quantities of necklace-shaped boron and boride nanowires. Research and educational activities will feature a systems-level focus spanning synthesis, structural characterization, and mechanical property measurement of necklace-shaped boron-based nanowires, and fabrication of boron-polymer nanocomposites. Guided by theory and experiment, the proposed research will seek an in-depth understanding of the synthesis mechanisms of necklace-shaped boron and boride nanowires as well as the interlocking strengthening mechanism in the proposed boron-polymer composites. The project will accelerate the development of a new family of one-dimensional nanomaterials necklace-shaped boron and boride nanowires by directly targeting lightweight, high strength polymer nanocomposites of major technological and economic interest. The outcomes of this research are anticipated to impact a broad range of fields related to the development of nanomanufacturing techniques and nanocomposites. The proposed work will open up opportunities for the fabrication of boron-polymer composites with mechanical properties surpassing those of carbon nanotube-polymer composites. The boron-polymer nanocomposites may exhibit new functionalities, for instance, superconductivity from MgB2 nanowires. The interwoven structure of the proposed program

本计画旨在合成项链状之硼及硼化物奈米线，以实现聚合物奈米复合材料中的互锁机制。采用化学气相沉积（CVD）方法可以制备大量的项链状硼和硼化物纳米线。研究和教育活动将以系统级为重点，涵盖项链形硼基纳米线的合成、结构表征和机械性能测量，以及硼聚合物纳米复合材料的制造。在理论和实验的指导下，拟议的研究将寻求深入了解项链形硼和硼化物纳米线的合成机制，以及在拟议的硼-聚合物复合材料中的联锁强化机制。 该项目将直接针对具有重大技术和经济利益的轻质、高强度聚合物纳米复合材料，加速新系列一维纳米材料项链形硼和硼化物纳米线的开发。这项研究的成果预计将影响与纳米制造技术和纳米复合材料发展相关的广泛领域。拟议的工作将开辟机会，制造硼聚合物复合材料的机械性能超过碳纳米管聚合物复合材料。硼-聚合物纳米复合材料可能表现出新的功能，例如，来自MgB 2纳米线的超导性。拟议方案的交织结构