| Project/Area Number |
09044145
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Field |
高分子構造・物性(含繊維)
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| Research Institution | TOKYO INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
ANDO Isao Tokyo Institute of Technology, Faculty of Engineering, Professor, 大学院・理工学研究科, 教授 (20016637)
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| Co-Investigator(Kenkyū-buntansha) |
WEBB Graham A. University of Surrey, Professor, 教授
HARRIS Robin K. University of Durham, Professor, 教授
KUROSU Hiromichi Nara Woman's University, Faculty of Apalel Science, Assoc, Professor, 生活環境学部, 助教授 (20221228)
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| Project Period (FY) |
1997 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥5,300,000 (Direct Cost: ¥5,300,000)
Fiscal Year 1998: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1997: ¥3,600,000 (Direct Cost: ¥3,600,000)
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| Keywords | solid state NMR / fluoropolymer / NMR chemical shift / structure / electronic state / Tight-binding Mo / ab initio mo / 19FNMR |
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| Research Abstract |
In polymer science and technology, the advanced development of various polymer materials which ideal properties and functions is desired. The substitution of fluorine atoms into polymers leads to developments for new polymers with excellent properties and functions. To achieve this, the close relationship between physical properties and molecular structure and dynamics must be clarified precisely. Therefore, powerful techniques are required for the elucidation of this relationship. One of these is solid state NMR.
From such a background, we have studied some new methodologies for analyzing exact molecular structure and dynamics of the polymers by new techniques of NMR measurements and sophisticated NMR chemical shift calculation on the basic quantum chemical method. Ando, Kurosu and Webb have developed new theoretical methods for calculating NMR chemical shift of polymer crystal with three-dimensional and structural periodicity with the ab initio MO(molecular orbital) framework, and also of model molecules with the high-level ab initio MO framework. These have been successfully applied to various kinds of polymers. On the other hand, Harris and Ando have developed new NMR techniques for elucidating structure and dynamics of fluoropolymers and other polymers in the solid state. By using these techniques we have successfully elucidated the structure and dynamics of the polymers in the solid state. From these results, the international joint research work leads to fruitful results for polymer science and technology.
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