Preparation of Spongy Cellulose Particles with hollow sturucture and High Functionalization of Spongy Cellulose Particles

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K05607
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 35010:Polymer chemistry-related
• Research Institution: Kobe University
• Principal Investigator: suzuki toyoko 神戸大学, 工学研究科, 助教 (40314504)
• Co-Investigator(Kenkyū-buntansha): 南 秀人 神戸大学, 工学研究科, 教授 (20283872)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: セルロース / 中空粒子 / カプセル / イオン液体 / 形態制御

Outline of Final Research Achievements

Principal investigators have prepared microporous structured (spongy) cellulose particles by a solvent release method (SRM) using ionic liquids that dissolve cellulose. Obtained spongy cellulose particles are solvent-exchangeable regardless of its polarity with maintaining their porous structure. In this project, morphology control of the spongy cellulose particles by SRM was carried out. Specially, introducing a hollow structure to spongy cellulose particles was tried to prepare novel capsule particles that can encapsulate both water-soluble and oil-soluble substances in a single capsule material. Although cellulose hollow particles were obtained, spongy structure was lost. Furthermore, chemical modification (introduction of fluorine components) was also investigated as one of the functionalization of cellulose particles.

Free Research Field

高分子化学

Academic Significance and Societal Importance of the Research Achievements

セルロース粒子の粒子形状やモルフォロジーの制御法を確立できたことは，昨今問題となっているマイクロプラスチックにかわる新規先端材料として，セルロース粒子を利用できる点で学術的/社会的意義のある研究成果が得られた。特に，セルロースをシェル壁に持つ中空粒子は溶剤の極性に依らず内包可能であることから，新規カプセル材である。本研究期間では作製に至らなかったが，多孔構造をカプセル壁に残すことができれば，内包物の制限がなく，その構造による徐放制御能も有するより高機能な新規カプセル剤として期待できる。