Enhancing Dispersibility of Paramylon Nanofiber Suspensions through Water-Jet Defibrillation Treatment
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- NARITA Takefumi
- Industrial Process Technology Group, Tokyo Metropolitan Industrial Technology Research Institute
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- KOIZUMI Juna
- Genome Biotechnology Laboratory, Kanazawa Institute of Technology
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- WADA Kasumi
- Genome Biotechnology Laboratory, Kanazawa Institute of Technology
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- NAKADA Ryo
- Genome Biotechnology Laboratory, Kanazawa Institute of Technology
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- TANIDA Ikuhiro
- Genome Biotechnology Laboratory, Kanazawa Institute of Technology
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- OSAWA Satoshi
- Genome Biotechnology Laboratory, Kanazawa Institute of Technology
説明
<p>In this study, paramylon nanofiber suspensions (PNFSs) with different dispersibility were developed by adjusting the pretreatment conditions, including pretreatment time and concentration of paramylon granules. The rheological, tribological, and chemical properties of the resulting PNFSs were evaluated. Two types of paramylon nanofiber (PNF) were prepared through water-jet (WJ) defibrillation: PNF-MP1, which underwent a short pretreatment time and low concentration and PNF-MP2, which underwent a long pretreatment time and high concentration. The defibrillation treatment partially converted PNF-MP1 to fibers, with some granules remaining. In contrast, PNF-MP2 obtained excellent nanofiber formation owing to the accelerated defibrillation effect. The rheological evaluation revealed that PNF-MP2 exhibited the highest dispersibility and the reversibility of viscosity recovery. Friction property evaluation showed that PNF-MP2 displayed excellent lubrication effects. Wide angle X-ray diffraction (WAXD) analysis showed that the defibrillation treatment impaired the microcrystallization and crystal regularity of PNF. X-ray photoelectron spectroscopy (XPS) surface elemental analysis showed that the defibrillation treatment exposed hydroxyl groups on the PNF surface, enhancing its hydrophilicity.</p>
収録刊行物
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- 材料技術
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材料技術 41 (5), 31-38, 2023-10-25
材料技術研究協会
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詳細情報 詳細情報について
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- CRID
- 1390862268805243648
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- ISSN
- 24367338
- 02897709
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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- 抄録ライセンスフラグ
- 使用可