2020 Fiscal Year Annual Research Report
Manipulating Crystallization of Ferroelectric Polymers in Two-Dimensional Spatial Confinement and Its Mechanistic Understanding
| Project/Area Number |
19K15625
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| Research Institution | Tohoku University |
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Principal Investigator |
朱 慧娥 東北大学, 工学研究科, 助教 (70754539)
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Keywords | Ferroelectric polymer / Nanoconfinement / Interface / Crystallization control / 2-Dimensional nanofilm |
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| Outline of Annual Research Achievements |
(1) Facile preparation of poly(vinylidene fluoride) (PVDF) homopolymer nanoparticles (NPs) with monodispersed size distribution and predominant ferroelectric phases was achieved in an interfacial nonsolvent (water/methanol)-solvent (dimethylformamide (DMF))-polymer (PVDF) ternary system using two interfacial nanoassembly methods.
(2) Controlling interface formation with DMF and water plays a crucial role in manipulating ferroelectric PVDF nanostructures in terms of crystallinity and the ferroelectric beta-to-gamma phase ratio.
(3) Nylon 11 nanosheets were first prepared using the Langmuir-Blodgett (LB) method, which was demonstrated with controllable film thickness at nm scale and metastable hydrogen bond interactions for reversible polarization.
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