Design of inner structure of reactor for synthesis of polymer nano particle

2023 Fiscal Year Final Research Report

• Project/Area Number: 21H01702
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 27020:Chemical reaction and process system engineering-related
• Research Institution: Nagoya University
• Principal Investigator: Yamamoto Tetsuya 名古屋大学, 工学研究科, 准教授 (10432684)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: メラミンフォーム / ガラスビーズ / 反応器 / 空隙率 / 重合反応 / ナノ粒子 / 界面活性剤フリー

Outline of Final Research Achievements

A three-dimensional network microstructure or packing was introduced inside the reactor to create micro/nano spaces. In the spaces, the convection of the solvent was suppressed by the effect of the walls inside the reactor, and the motions of particles precipitated by the polymerization reaction was reduced. In other words, since the frequency of collisions between particles due to convection was reduced, particle growth due to aggregation was prevented. As a result, we succeeded in creating nano-sized polymer particles without surfactants. The size of the nanoparticles can be controlled by controlling the porosity of the reactor. For example, in the case of a three-dimensional network microstructure, the particle size can be controlled by compressing the melamine foam, or in the case of a filling, by reducing the size of the filling.

Free Research Field

化学工学

Academic Significance and Societal Importance of the Research Achievements

ナノ材料の開発が盛んに行われているが，それらを合成する反応器の最適化が進んでいない。本研究ではナノ材料の合成に適した反応器，たとえば充填物を利用したマイクロ・ナノ空間を反応場にすることで，従来の反応器が与える環境負荷を低減することができる。また，材料のサイズ制御技術もマイクロ・ナノ空間をコントロールすることで可能になることを示した。今後，本研究により反応器の最適化，原料の供給法の最適化など，従来になかった観点でナノ材料の合成法の開発が進み，科学技術の発展に貢献するものと思われる。