Acquisition of Instruments for Polymer Fiber Characterization and Student Training

购置聚合物纤维表征和学生培训仪器

• 批准号: 0315756
• 负责人: Robert Shambaugh
• 金额: $ 11万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-15 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0315756&HistoricalAwards=false
• 关键词: Acquisition; Instruments; Polymer; Fiber; Characterization

This grant is for the purchase of three instruments designed to improve the fabrication and characterization of polymer fibers: a differential scanning calorimeter (DSC), a tensile tester (TT) and an infrared camera (IRC). These three instruments allow examination of the fabrication of fibers both on-line (as the fiber is being formed) and off-line. Projects that will utilize these instruments include carbon nanotubes that are mixed with a variety of thermoplastic polymers and drawn into fibers in order to increase the modulus and tenacity of the final product. The DSC measures how the nanotubes affect the crystallinity and glass transition of the product. The TT measures the mechanical properties of the product as a function of different draw rates and temperatures. The IRC permits on-line temperature measurements during the formation of the fibers; such knowledge is used to mathematically model and improve the fiber formation process. The three instruments will also be used in several other active projects involving the high speed formation of nonwoven webs of fiber during the process known as melt blowing. Another very active area involves fiber-based composites that use a filler modification technique termed admicellar polymerization; both the DSC and TT are integral to this work. The broader impacts of this proposal are primarily related to improved student education. With the new instruments, the students will work with instrumentation that they will contact in their subsequent careers. Several undergraduates are employed in the laboratory during the year. Presently, more than half of these undergraduates are under-represented students (women, Hispanics, and African-Americans). The students participate in the academic/industrial fiber consortium at the university, give oral presentations at conferences, and act as coauthors on papers. The instrumentation will be used in the training of students and in classroom demonstrations. This proposal will also allow the expansion of the academic/industrial interface that exists at the University of Oklahoma. As alluded to above, the university has an academic/industrial consortium for the development of nonwoven fiber technology. For more than a decade this organization has been supported by a number of Fortune 500 companies (e.g., 3M, DuPont and Procter & Gamble.

这笔拨款用于购买三台旨在改进聚合物纤维制造和表征的仪器：差示扫描量热计（DSC）、拉伸测试仪（TT）和红外摄像机（IRC）。这三种仪器允许在线（当光纤形成时）和离线检查光纤的制造。将利用这些仪器的项目包括碳纳米管，将其与各种热塑性聚合物混合并拉伸到纤维中，以增加最终产品的模量和韧性。DSC测量了纳米管如何影响产品的结晶度和玻璃化转变。TT测量产品的机械性能作为不同拉伸速率和温度的函数。IRC允许在纤维形成过程中进行在线温度测量；这些知识用于数学建模和改进纤维形成过程。这三种仪器还将用于其他几个正在进行的项目，这些项目涉及在熔融吹制过程中高速形成非织造纤维网。另一个非常活跃的领域是纤维基复合材料，它使用一种称为胶束聚合的填料改性技术；DSC和TT都是这项工作不可或缺的一部分。这项提议的更广泛影响主要与改善学生教育有关。有了这些新乐器，学生们将会在以后的职业生涯中接触到这些仪器。本学年有几名本科生在实验室工作。目前，这些本科生中有一半以上是代表性不足的学生（女性、西班牙裔和非裔美国人）。学生们参加大学的学术/工业纤维联盟，在会议上作口头报告，并作为论文的共同作者。该仪器将用于学生培训和课堂演示。该提案还将允许扩大俄克拉荷马大学现有的学术/工业接口。如上所述，该大学有一个非织造纤维技术发展的学术/工业联盟。十多年来，这个组织得到了许多财富500强公司（如3M、杜邦和宝洁）的支持。