報告人💆🏿：Toshi Miyoshi 

主持人🙌🏼：楊曙光 意昂副主任

時間：2024年7月5日（星期五）15:30

地點：復合材料協同創新意昂大樓A212學術交流室

報告人簡介：Toshi Miyoshi obtained his Ph.D in Chemistry (1997) at Kyoto University, Japan. After postdoctoral work at Institute of Polymer Research Dresden, Germany, he joined National Institute of Advanced Technology and Industrial Science (AIST), Japan, in 2000. He joined the department of polymer science at the University of Akron as associate professor in 2010 and was promoted to Professor in 2018. His research interests are focusing on polymer crystallization, sustainable polymers, carbon materials, supramolecules, and biomacromolecules, and development of solid-state NMR spectroscopy.

報告摘要：State-of-the artSolid-state NMR spectroscopy is one of powerful experimental tools to access structure and molecular dynamics of soft matters, especially, synthetic polymers at the atomic levels.¹ In this talk, I will present our recent efforts on i) chain trajectory and polymer crystallization,^{2, 3)} ii) development of novel polyolefins⁴⁾ and iii) solid-phase chemical reactions for carbon fiber precursors⁵⁾ by using various solid-state NMR techniques.

參考文獻： 1) Zhang, R.; Chen, W.; Miyoshi, T. “Perspective:Elucidations of Structure and Molecular Dynamis of Complex Polymers by State-of-Art Solid-State NMR Spectroscopy”Macromolecules 57, 1893-1918, 2024. 2) Jin, F., M.T., et al Polymer Chains Fold Prior to Crystallization. ACS Macro. Lett., 11, 284-288, 2022. 3) Jin, F., M.T., et al “Impact of Entanglements on Chain-Folding Structure of Semicrystalline Polymer during Crystallization” ACS Macro. Lett., 12, 1138-1143, 2023. Zheng, Y., M. T. et al Asymmetric Molecular Dynamics and Anisotropic Phase Separation in Cocrystal of Crystalline/Crystalline Polymer Blend. ACS Macro Lett., 11, 193-198, 2022.  4) Kafle, N., M.T., et al Roles of Conformational Flexibility for the Crystallization of Stereo-irregular Polymer” Macromolecules, 54, 5705-5718, 2021. 5) Ma J., M.T. et al “Chemical Reaction in poly(acrylonitrile-co-itaconic acid) during Stabilization as Revealed by Solid-state NMR Spectroscopy and 13C Isotope Labeling” Carbon 215, 118432, 2023.