NSF-CGP Fellowship: Magnetic Resonance Imaging of Swollen Polymer Networks

小行星9600333 该奖项支持底特律慈善大学（UDM）化学系的Shulamith Schlick和东京工业大学（TIT）高分子化学系的Isao Ando之间的合作。 项目资金将允许Schlick博士在TIT居住四个月，以便通过核磁共振成像（MRI）技术研究溶胀的聚合物网络，并评估网络结构对凝胶异质性和对机械和电刺激的反应的影响。TIT的Ando博士和同事通过对溶胀聚合物网络中存在的高度移动的溶剂（尤其是水）分子进行成像，解决了固态样品MRI固有的困难。从溶剂分子获得的图像可以根据网络特性进行解释。Schlick博士开发了二维电子自旋共振成像（2D ESRI），用于聚合物材料和聚合物支撑的催化系统的成像。该方法最近已被用于测量水凝胶中的小的和聚合的示踪剂的平移扩散，所述水凝胶具有优异的生物耐受性和良好的机械性能，并且特别适用于生产接触透镜。因此，该提案将联合收割机结合日本和美国两个国家的科学家在通过磁共振成像技术对材料进行非破坏性评估领域的专业知识。美国科学家对聚合物系统和ESRI的熟悉，以及日本集团在聚合物物理和MRI方面的专业知识，被认为是合作研究计划成功的关键因素。 ***

9600333 Schlick This award supports the collaboration between Shulamith Schlick of the Department of Chemistry, University of Detroit Mercy (UDM) and Isao Ando of the Department of Polymer Chemistry, Tokyo Institute of Technology (TIT). Project funding will allow Dr. Schlick to spend four months in residence at TIT, in order to study swollen polymer networks by nuclear magnetic resonance imaging (MRI) techniques, and to assess the effect of network structure on gel heterogeneities and response to meahanical and electric stimuli. Dr. Ando and co-workers at TIT have solved the difficulties inherent in MRI of solid state-like samples, by imaging the highly mobile solvent (especially water) molecules present in swollen polymer networks. The images obtained from the solvent molecules can then be interpreted in terms of network properties. Dr. Schlick has developed electron spin resonance imaging in two dimensions (2D ESRI), for imaging of polymeric materials and polymer-supported catalytic systems. This method has been used recently to measure the translational diffusion of small and polymeric tracers in hydrogels that have excellent biological tolerance and good mechanical properties, and that are especially useful for the production of contact lenses. This proposal will therefore combine the expertise of scientists in two countries, Japan and US, in the field of non- destructive evaluation of materials by magnetic resonance imaging techniques. The familiarity of the US scientist with polymeric systems and ESRI, together with the expertise of the Japanese group in polymer physics and MRI, are considered key elements for the success of the collaborative research plan. ***