MRI: Acquisition of Equipment for Melt- and Solid-State Fabrication and Barrier Performance Evaluation of Polymer Nanocomposites

MRI：购置用于聚合物纳米复合材料的熔融态和固态制造以及阻隔性能评估的设备

• 批准号: 0820993
• 负责人: Katsuyuki Wakabayashi
• 金额: $ 28.16万
• 依托单位: Bucknell 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 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0820993&HistoricalAwards=false
• 关键词: MRI; Acquisition; Equipment; Melt; Solid

The instrumentation funded by this award will support a systematic investigation of solid-state shear pulverization (SSSP) for creating polymer nanocomposites with improved barrier properties relative to those fabricated using conventional melt compounding. The innovative SSSP technique can overcome many of the common challenges associated with conventional techniques for producing effective and stable nanocomposites with well-dispersed and exfoliated nanofillers (e.g., clay, carbon nanotubes, and graphite). Thus, SSSP has significant potential to advance fundamental structure-property relationship elucidation in nanocomposites and facilitate development of superior hybrid materials for use in new engineering applications. The main objectives of this research are: (1) to understand the relationship between SSSP processing parameters and the structure and properties of the resulting nanocomposites via a systematic parametric study; (2) to develop novel high-performance polymer nanocomposites tailored for specific industrial applications by controlling the solid-state pulverization conditions; and (3) to evaluate the morphology and barrier properties of the nanocomposites created by SSSP via direct comparison with those of the unmodified polymer and nanocomposite specimens created by melt compounding. The instrumentation includes a bench-scale twin-screw extruder/solid-state shear pulverizer that is custom designed for continuous fabrication of polymer nanocomposites in the melt or solid state. The instrumentation also includes precision analyzers for measurement of water vapor and oxygen permeability, pellet and powder feeders for delivering polymer resin and nanofillers, and a water trough/pelletizer system to cool, collect, and size melt-compounded extrudate. This equipment will be used in conjunction with existing instruments to conduct the proposed research and support a long-term research program for both PIs. In addition, the equipment will enhance research and educational opportunities for underrepresented groups and facilitate cross-disciplinary collaborations and outreach both on and off the Bucknell campus. The PIs represent different engineering disciplines and will work together with students from different science and engineering concentrations. Moreover, a portion of the research involves a multi-institutional partnership with a Research I university and an exclusively undergraduate, technology-focused institution, thereby stimulating cross-fertilization and promoting shared use of the instrumentation. The outcomes of the research will be disseminated to the international science and engineering communities and are expected to attract interest from potential industrial partners.

该奖项资助的仪器将支持固态剪切粉碎（SSSP）的系统研究，以创建相对于使用传统熔融复合制造的具有改进的阻隔性能的聚合物纳米复合材料。 创新的SSSP技术可以克服与常规技术相关的许多常见挑战，用于生产具有良好分散和剥离的纳米填料（例如，粘土、碳纳米管和石墨）。 因此，SSSP具有显着的潜力，以推进基本的结构-性能关系的阐明在纳米复合材料和促进开发的上级杂化材料用于新的工程应用。 本研究的主要目的是：（1）通过系统的参数研究，了解SSSP工艺参数与所得纳米复合材料的结构和性能之间的关系：（2）通过控制固态粉碎条件，开发适合特定工业应用的新型高性能聚合物纳米复合材料;和（3）通过与未改性聚合物和通过熔融配混产生的纳米复合材料试样的形态和阻隔性能的直接比较来评价由SSSP产生的纳米复合材料的形态和阻隔性能。 该仪器包括一个实验室规模的双螺杆挤出机/固态剪切粉碎机，这是定制设计的连续制造的聚合物纳米复合材料在熔融或固态。 该仪器还包括用于测量水蒸气和氧气渗透性的精密分析仪、用于输送聚合物树脂和纳米填料的粒料和粉末进料器以及用于冷却、收集和调整熔融复合挤出物尺寸的水槽/造粒机系统。 该设备将与现有仪器结合使用，以进行拟议的研究，并支持两个PI的长期研究计划。此外，这些设备将为代表性不足的群体增加研究和教育机会，并促进巴克内尔校园内外的跨学科合作和外联。PI代表不同的工程学科，并将与来自不同科学和工程专业的学生一起工作。 此外，研究的一部分涉及与研究I大学和一个专门的本科生，以技术为重点的机构的多机构合作伙伴关系，从而刺激交叉施肥和促进仪器的共享使用。研究成果将传播给国际科学和工程界，预计将吸引潜在工业合作伙伴的兴趣。