| 研究課題/領域番号 |
23K04847
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| 研究種目 |
基盤研究(C)
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| 配分区分 | 基金 |
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| 応募区分 | 一般 |
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| 審査区分 |
小区分35020:高分子材料関連
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| 研究機関 | 東北大学 |
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研究代表者 |
朱 慧娥 東北大学, 工学研究科, 客員教授 (70754539)
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| 研究期間 (年度) |
2023-04-01 – 2026-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
4,680千円 (直接経費: 3,600千円、間接経費: 1,080千円)
2025年度: 1,560千円 (直接経費: 1,200千円、間接経費: 360千円)
2024年度: 1,690千円 (直接経費: 1,300千円、間接経費: 390千円)
2023年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
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| キーワード | Ionic liquid / Ferroelectric / Crystal orientation / Ferroelectric polymer / Physical pinning wall / Nanosheets / Relaxor ferroelectricity |
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| 研究開始時の研究の概要 |
This research proposal will develop a tunable bottom-up construction of multilayers consisting of PVDF and pDDA for relaxor ferroelectrics, study physical crystal pinning effect of PVDF homopolymer nanocrystals surrounded by amorphous pDDA and approach a mechanistic understanding of RFE behaviors.
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| 研究実績の概要 |
Increase of β phase PVDF in films were achieved by two methods:
(1) Interfacial preparation of PVDF/pDDA alloys was successfully obtained. FT-IR spectra were used to confirm the crysatallization of PVDF with different ratio of PVDF/PDDA. It shows the decrease of the concentration of PVDF in the polymer monolayer alloys caused the reduction of PVDF crystallites.
(2) Rich β phase improved the device properties by large remanent polarization values. The effect of ionic liquids on the PVDF crystal orientation at the PVDF polymer were investigated.Optimization on ferroelectric crystal content and crystal orientation was confirmed with the addition of IL which also contributed to the vertical phase separation structures in the polymer films.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
According reasearch plan, preparation of polymer alloy monolayers with tunable ferroelectric polymer contents and realization of monolayer transfer to substrates and electrodes should be achieved by the 2023 fiscal year.
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| 今後の研究の推進方策 |
(1) Realization of arbitrarily changeable layer structure in the multilayered nanosheets with controllable physical wall thickness for ferroelectric domain (First half of FY2024)
(2) Crystallization analysis and crystal size characterization (Second half of FY2024)
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