CAREER: Structure/Mobility/Property Relationships in Polymers and Engineered Fibrous Substrates

职业：聚合物和工程纤维基材的结构/流动性/性能关系

• 批准号: 9502246
• 负责人: Haskell Beckham
• 金额: $ 31.25万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-01 至 2000-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9502246&HistoricalAwards=false
• 关键词: CAREER; Structure; Mobility; Property; Relationships

9502246 Beckham Through two distinct projects, detailed characterization of molecular mobilities will be conducted and then used to engineer improved or novel polymers and fibrous substrates. Advanced nuclear magnetic resonance (NMR) techniques will be employed to specify molecular mobilities not only by timescale, but also by geometry (2D exchange spectroscopy), and by spatial direction (NMR imaging). The following two projects are described: (1) solid-state polymer molecular dynamics, and (2) water distribution and diffusion in engineered fibrous substrates. In both projects, multidimensional NMR methods will be used to elucidate that historically "missing link" for the correlation of molecular structure with macroscopic properties in materials, that is, detailed descriptions of molecular movements. %%% This research is important because it provides links to important questions in polymer and textile science, and covers both basic and applied subjects. The educational component of this grant consists of introducing modern topics into textile courses and to develop new teaching methods in which students are activley involved in the teaching process. ***

9502246贝克汉姆通过两个不同的项目，分子迁移率的详细表征将进行，然后用于工程改进或新的聚合物和纤维基质。先进的核磁共振（NMR）技术不仅可以通过时间尺度，还可以通过几何（二维交换光谱）和空间方向（核磁共振成像）来指定分子的迁移率。以下两个项目描述：(1)固态聚合物分子动力学，(2)水在工程纤维基质中的分布和扩散。在这两个项目中，多维核磁共振方法将用于阐明历史上“缺失的环节”，即分子结构与材料宏观特性之间的相关性，即分子运动的详细描述。这项研究很重要，因为它为聚合物和纺织科学中的重要问题提供了联系，并且涵盖了基础和应用学科。这项拨款的教育部分包括在纺织课程中引入现代主题，并开发新的教学方法，使学生积极参与教学过程。＊＊＊