2022 Fiscal Year Final Research Report
Fabrication of novel structure and material properties through polymer reaction using controlled fine higher-order structure as a template
| Project/Area Number |
21K14683
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 35020:Polymer materials-related
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| Research Institution | Kobe University |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2023-03-31
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| Keywords | 結晶性高分子 / 超臨界二酸化炭素 / 高分子反応 / 階層構造 |
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| Outline of Final Research Achievements |
In this research, we established a novel polymer functionalization method involving microstructure of crystalline polymers as template structures in supercritical carbon dioxide. After functioonalized polymers in this method, the polymers possessed both characteristic properties originated from higher-ordered structures in crystalline region and functional properties of the modified functional groups thhrough polymer reaction. Through the polymer reaction in supercritical carbon dioxide, the high-oriented structure of poly(vinyl alcohole) (PVA) was maintained as well as mechanical durability in high humid condition, larger hydrophobicity, and control of biocecomposition with lipase were observed. In addition, futher polymer functionalization after this polymer reaction provided polymers with milti-blocky structure.
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| Free Research Field |
高分子化学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の成果は，これまで均一系の溶液中でのランダムな修飾に限られていた高分子反応に対し，一石を投じるものであり，超臨界二酸化炭素中での固体状態を基本とする高分子反応を展開することで，非晶領域での官能基導入を選択的に達成している。これにより，これまでの高分子反応では，原材料の結晶性が消失してしまうため，結晶性高分子の優れた力学物性などのさまざまな性能が損なわれていた。本研究での手法は，損なわれる性能特性と高分子反応による機能化の両立が可能となり，これまでの困難であった高分子材料群の提案・創出へとつながるものである。
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