| Project/Area Number |
15K17914
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Kyushu University |
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Principal Investigator |
Murakami Daiki 九州大学, 先導物質化学研究所, 助教 (80588145)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 高分子ブラシ / 界面構造 / X線小角異常散乱法 / 原子間力顕微鏡観察 / 高分子電解質ブラシ / イオン解離 / 面内相分離 / 原子間力顕微鏡 / 対イオン分布 / X線小角異常散乱 |
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| Outline of Final Research Achievements |
Polymers chemically grafted to the surface of substrates, known as polymer brushes, are often used to modify surface properties such as the hydrophilicity or hydrophobicity, friction, and adhesiveness. In recent studies, however, it is also known that the degree of ionic dissociation in polyelectrolyte brushes are quite low. This may prevent the high performance of polyelectrolyte brushes as functional materials. So in this study we aim to promote the ionic dissociation of polyelectrolyte brushes. We clarified that the polymer brush/solvent interface exhibited the nanometer scale fine structures at the interface. These structures were also observed in the polyelectrolyte brush/solvent system and the spin-coated polymer film/solvent system. We revealed that these phenomena were corresponding to the phase separation of polymer and solvent at the interface. This is highly important knowledge to control the structure and to promote the ionic dissociation of polyelectrolyte brushes.
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