Adams Alina
Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Templergraben 55, D-52056 Aachen, Germany.
Magn Reson Imaging. 2019 Feb;56:119-125. doi: 10.1016/j.mri.2018.09.015. Epub 2018 Sep 20.
Low-field nuclear magnetic resonance (NMR) based on permanent magnet technologies is currently experiencing a considerable growth of popularity in studying polymer materials. Various bulk properties can be probed with compact NMR tabletop instruments by placing the sample of interest inside the magnet. Contrary to this, compact NMR sensors with open geometries give access to depth-dependent properties of polymer samples and objects of different sizes and shapes truly non-destructively by performing measurements in the inhomogeneous stray-field outside the magnet system. Some of the sensors are also portable being thus well suited for onsite measurements. The gain of both bulk and depth-dependent microscopic properties are important for establishing improved structure-property relationships needed for the rational design of new polymer formulations. Selected recent applications will be presented to illustrate this potential of compact NMR.
基于永磁技术的低场核磁共振（NMR）目前在聚合物材料研究中越来越受欢迎。通过将感兴趣的样品置于磁体内部，使用紧凑的NMR台式仪器可以探测各种体相性质。与此相反，具有开放几何结构的紧凑NMR传感器通过在磁体系统外部的非均匀杂散场中进行测量，能够真正无损地获取聚合物样品以及不同尺寸和形状物体的深度相关性质。其中一些传感器还便于携带，非常适合现场测量。获得体相和深度相关的微观性质对于建立合理设计新型聚合物配方所需的改进结构-性能关系非常重要。将展示近期的一些应用实例，以说明紧凑NMR的这种潜力。
