Synthesis and Characterization of Polymeric Nanofibers and Nanowires

聚合物纳米纤维和纳米线的合成与表征

• 批准号: 0809454
• 负责人: Maher Amer
• 金额: $ 1.71万
• 依托单位: Wright State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0809454&HistoricalAwards=false
• 关键词: Synthesis; Characterization; Polymeric; Nanofibers; Nanowires

TECHNICAL ABSTRACT:This research, submitted to the US-Egypt International Collaboration and funded by the NSF Office of International Science and Engineering, proposes a fabrication method that can produce continuous polymer nano-fibers with submicron cross-section. This technique can spin fibers from polymeric precursors that would be considered "unspinnable" by any other current method. As such, this technique may allow the fabrication of novel fiber structures, assist in the fabrication of nano-fibers from new materials, and allow the use of novel chemical routes in fiber spinning. Produced nano-fibers will be characterized by means of a powerful spectroscopy technique, Raman spectroscopy, which is capable of probing structural characteristics on the molecular level. The correlation between processing conditions and nanofiber characteristics will also be investigated in order to optimize the processing conditions. Once nano-fiber processing has been optimized, we shall explore the development of a new approach of manufacturing insulated nanowires, where single-walled carbon nanotubes or conducting polymers will be used as a conducting core encapsulated in an insulating polymer. Several applications are expected for such insulated nanowires spatially in the field of nanoelectronics.NON-TECHNICAL ABSTRACT : Polymer fibers are very important constituents in almost every field in our modern life. Textile industry, water purification and waste management, and environmental filters, fishing nets, structural composites, surgical masks, vascular grafts and heart valves are few examples of applications that could benefit from advanced polymeric nanofibers. Some of these fibers are from natural origin while the majority is made of various types of synthetic polymers. The new challenges facing us necessitate the development of new materials using very efficient and innovative techniques on the nanoscale. The proposed work is an international collaboration between USA and Egypt. Once successful, the proposed technology enables the production of nano-fibers that are much needed in both advanced and developing countries. The proposed work establishes a well needed production method for advanced nano-fibers and nanowires with potential applications in several fields, such as medical, environmental, nanoelectronic, water treatment, fishing industry, structural applications, etc., that would definitely benefit both the US and Egyptian economy. In addition to the education and training of Egyptian graduate students in US, and use of project findings in undergraduate courses, the proposed work establishes an international collaboration between Wright State University (USA), and British University, Egypt. Such collaboration would naturally grow into more collaborations that includes student exchange, visiting professorships, and scientific workshops.

技术摘要：这项由美国国家科学基金会国际科学与工程办公室资助的美国-埃及国际合作研究提出了一种制造方法，可以生产具有亚微米横截面的连续聚合物纳米纤维。这种技术可以从聚合物前体纺出纤维，而这些聚合物前体通过任何其他现有方法都被认为是“不可纺的”。因此，该技术可以允许制造新型纤维结构，帮助由新材料制造纳米纤维，并允许在纤维纺丝中使用新型化学路线。生产的纳米纤维将通过一种强大的光谱技术，拉曼光谱，这是能够探测分子水平上的结构特征的手段。还将研究加工条件和微结构特性之间的相关性，以优化加工条件。 一旦纳米纤维加工得到优化，我们将探索开发一种制造绝缘纳米线的新方法，其中单壁碳纳米管或导电聚合物将用作封装在绝缘聚合物中的导电芯。在纳米电子学领域中，这种空间绝缘的纳米线有望得到多种应用。非技术摘要：聚合物纤维在我们现代生活的几乎每个领域都是非常重要的组成部分。 纺织工业、水净化和废物管理、环境过滤器、渔网、结构复合材料、外科口罩、血管移植物和心脏瓣膜是可以从先进的聚合物纳米纤维中受益的应用的几个例子。 其中一些纤维来自天然来源，而大多数是由各种类型的合成聚合物制成的。我们面临的新挑战需要在纳米尺度上使用非常有效和创新的技术来开发新材料。拟议的工作是美国和埃及之间的国际合作。一旦成功，所提出的技术将能够生产先进国家和发展中国家都急需的纳米纤维。所提出的工作建立了一种用于先进纳米纤维和纳米线的急需的生产方法，其在几个领域具有潜在的应用，例如医疗、环境、纳米电子、水处理、渔业、结构应用等，这对美国和埃及的经济都有好处。 除了在美国对埃及研究生进行教育和培训，以及在本科课程中使用项目成果外，拟议的工作还建立了赖特州立大学（美国）和埃及英国大学之间的国际合作。 这种合作自然会发展成更多的合作，包括学生交流，访问教授和科学研讨会。