| Project/Area Number |
18K14289
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 35020:Polymer materials-related
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| Research Institution | High Energy Accelerator Research Organization |
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Principal Investigator |
Takagi Hideaki 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 特別技術専門職 (10720261)
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| Project Period (FY) |
2018-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
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| Keywords | ゴム / 階層構造 / テンダーX線 / 極小角散乱法 / 不均一構造 / 極小角散乱 / 装置開発 / ゴムの網目不均一性 / ゴムの網目構造 / 異常分散 / 網目不均一構造 |
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| Outline of Final Research Achievements |
The hierarchical network structure in rubbers was investigated by ultra-small tender X-ray scattering technique. The diffractometer for small angle X-ray scattering in BL-15A2 at the Photon Factory in KEK was modified to that for ultra-small tender X-ray scattering. By this modification, the camera length became 6.6 m.The small angle resolution was 0.0047 1/nm using an incident X-ray energy of 2100 eV, and thus it is able to evaluate structures with over 1 um. The hierarchical structure in styrene-butadiene rubber (SBR) was studied by ultra-small tender X-ray scattering. The scattering peak from hierarchical structures at q = 0.016 1/nm was successfully observed.
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| Academic Significance and Societal Importance of the Research Achievements |
テンダーX線専用の極小角散乱装置の開発に成功し、入射X線エネルギー2100eVで、小角分解能が0.0047 1/nmとなり、1μmを超える構造体の評価が行えるようになった。フィラー材を含むSBRと含まないSBRが持つ不均一階層構造の調査をしたところ、極小角散乱領域にSBRの不均一構造に由来するピークの観察に成功した。
広い階層構造を形成する材料はゴム以外のも多くのポリマー材料で観察されるために、今後はゴム以外の材料にもテンダーX線極小角散乱法を実施できる。テンダーX線小角散乱は世界的にも注目され始めている手法なので、現時点で極小角散乱法まで開発できたのは学術的・工業的にも意義がある。
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