2021 Fiscal Year Research-status Report
Hierarchically Ordered Nanocomposites based on Block Copolymers and Nanodiamonds
| Project/Area Number |
20K15347
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| Research Institution | Okinawa Institute of Science and Technology Graduate University |
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Principal Investigator |
SUTISNA Burhannudin 沖縄科学技術大学院大学, 力学と材料科学ユニット, ポストドクトラルスカラー (90866922)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | Nanodiamond / Organic solvent / Colloidal stability / Self-assembled channels / Block copolymer / Nanocomposite |
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| Outline of Annual Research Achievements |
Two major achievements have been achieved: 1) Stable dispersion of nanodiamond (ND) in organic solvents was made using non-covalent modification of ND surface and a step-wise solvent exchange method. Formation mechanism of the stable dispersion was studied mainly using dynamic light scattering and transmission electron microscopy revealing a new understanding of colloidal stability. The invented procedure can be useful for the preparation of advanced nanocomposites for tribology and coating.
2) Self-assembled membranes based on nanodiamond and block copolymers have been fabricated. The membranes showed a promising performance in nanofiltration range that indicates ND potential in forming self-assembled channels for water purification and in improving mechanical stability of the membrane.
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| Current Status of Research Progress |
Current Status of Research Progress
3: Progress in research has been slightly delayed.
Reason
The initial plan to chemically modify nanodiamond (ND) and disperse it in organic solvents did not work as expected. The main challenge was in the purification process, and the modified ND formed large aggregates with a broad distribution, not suitable for creating nanocomposite. However, approaching the end of fiscal year, a new method to disperse ND in organic solvents was finally invented and some good results were obtained accordingly.
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| Strategy for Future Research Activity |
The next research plan will be dedicated for writing two manuscripts and disseminating research outcomes at workshops/conferences. Some additional experiments to complement the main results will still be conducted, such as differential scanning calorimetry and thermogravimetric analysis.
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| Causes of Carryover |
The amount will be used for consumables as well as conference and publication fees.
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Research Products
(2 results)
