2023 Fiscal Year Final Research Report
Study on Mechanism of Adhesion Development of Rubber-like Material by Surface and Interface Science Method
| Project/Area Number |
21H01806
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 29020:Thin film/surface and interfacial physical properties-related
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 粘着 / ゴム / メニスカス / タッキファイヤ / 表面・界面 |
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| Outline of Final Research Achievements |
By placing micrometer-sized solid particles on a rubber film and analyzing the meniscus formed at the interface and the settling behavior of the particles, the following findings were made regarding the adhesion (stickiness) mechanism: 1. spontaneous meniscus formation may not be the most important factor in the development of stickiness, but it is probably related; 2. viscoelastic properties of rubber are important (viscosity, deformation speed, etc.), 3. In tackifier-doped systems, spontaneous wetting (meniscus formation and particle sedimentation) is not promoted, and deformation of the rubber surface by external loading is important for tack development, and 4. Formation of surface layer and phase separation structure in tackifier-doped systems is related in tack development (at least the matrix must remain soft).
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| Free Research Field |
高分子構造・物性
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| Academic Significance and Societal Importance of the Research Achievements |
ゴム状高分子の表面において“べたつき”がなぜ発生するかを解明することは、高分子鎖がどのような構造・状態で表面に存在しているかといった基本的な現象を明らかにすることにつながり、学術的な意義は大きい。さらに、ゴムよりも固い粘着付与剤を添加したにもかかわらず“べたつき”が増加する機構を明らかにすることは分子論的、つまり学術的にも興味深い。粘着剤は、簡便な接着方法としてテープや付箋紙といった民生用途だけでなく半導体製造工程等の産業用途にも幅広く用いられていることから、粘着発現機構を解明しようとする本研究はその高性能化につながる可能性が高く、工業的にも重要であることから社会的な意義は大きい。
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