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

9502246 Beckham通过两个不同的项目，将进行分子迁移率的详细表征，然后用于工程改进或新型聚合物和纤维基材。 先进的核磁共振（NMR）技术将被用来指定分子的流动性，不仅通过时间尺度，而且通过几何形状（二维交换光谱），并通过空间方向（NMR成像）。 以下两个项目进行了描述：（1）固态聚合物分子动力学，和（2）水在工程纤维基材的分布和扩散。 在这两个项目中，多维NMR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性质的相关性，即分子运动的详细描述。 这项研究很重要，因为它提供了聚合物和纺织科学中重要问题的链接，涵盖了基础和应用学科。 该补助金的教育部分包括将现代主题引入纺织课程，并开发新的教学方法，使学生积极参与教学过程。 ***

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. ***