| Project/Area Number |
17K17860
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Polymer chemistry
Analytical chemistry
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| Research Institution | Osaka University |
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Principal Investigator |
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| Research Collaborator |
OZAKI Yukihiro
SATO Harumi
HOSHINA Hiromichi
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Keywords | 高分子構造 / スペクトル分析 / 高分子構造・物性 |
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| Outline of Final Research Achievements |
It is important to analyze the higher-order structures of crystalline polymers in relation to their structures and functions. The low-frequency vibrational spectroscopies are sensitive to the polymer structures and can be simple analytical methods of them. However, the low-frequency modes haven’t been fully assigned yet. Here, we successfully developed a low-frequency Raman spectrometer and achieved the assignments of the low-frequency modes of nylon 6, a typical crystalline polyamide, by applying a fragment-based DFT calculation to the spectral interpretation.
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| Academic Significance and Societal Importance of the Research Achievements |
結晶性ポリマー，特に繊維素材として使用されることの多いナイロン6の低波数振動モードを，独自の量子力学計算に基づいて帰属できたことは，世界的に見て新しく，重要な成果である。ナイロン6の低波数振動ピークの強度はナイロン6結晶の面間隔と相関するが，その原因をピーク帰属に基づいて推測することができた。今後，低波数振動分光を，結晶性ポリマーの高次構造を解析する簡便な分析手法として使用する際に，今回得られた帰属は必須の情報となるであろう。
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