Janus-type surface design of nanocelluloses by Pickering emulsion system
| Project/Area Number |
18K05767
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 40020:Wood science-related
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| Research Institution | Kyushu University |
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Principal Investigator |
Yokota Shingo 九州大学, 農学研究院, 助教 (30600374)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | セルロースナノファイバー / 表面・界面 / ピッカリングエマルション / 両親媒性構造 / 表面化学修飾 / 両親媒性 / ナノセルロース / エマルション / 化学改質 / 表面／界面 / ヤヌス |
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| Outline of Final Research Achievements |
This study clarified that the cellulose nanofibers prepared by aqueous counter collision (ACC-CNF) possess both hydrophobic and hydrophilic planes on a single nanofibril surface. Furthermore, it was indicated that this amphiphilic ACC-CNF was densely adsorbed at oil and water interface, which resulting in stable Pickering emulsion formation. The surface of ACC-CNF was acetylated only in oil phase of an emulsion system. The localized hydrophobic faces induced unique self-aggregation behavior of the modified CNF in water, which would be applied as a new approach to fabricate a material with higher-ordered hierarchical structure in an aqueous system.
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| Academic Significance and Societal Importance of the Research Achievements |
循環利用可能なバイオマスのマテリアル変換は、脱炭素社会構築の一翼を担う研究開発課題である。樹木等から得られるセルロースナノファイバー（CNF）は、優れた物性をもつバイオナノ素材と注目されているが、原料や製造法により異なる、その表面物性の理解と制御が鍵となる。本研究では、両親媒性を示すACC法由来のCNFについて、表面構造・表面物性の基礎知見を得た。特に、ACC-CNFの優れた乳化特性は、食品を含む広範な分野へ応用展開が期待されるものである。
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Report
(4 results)
Research Products
(44 results)
