| Project/Area Number |
24560894
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Tokyo City University |
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Principal Investigator |
FUJIMA Takuya 東京都市大学, 工学部, 准教授 (40392097)
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| Research Collaborator |
FUTAKUCHI Eitaro
SHIRAISHI Yoshihiro
TAKAHASHI Shin-nosuke
MURAI Shota
SHIMAZAKI Masahiro
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | ナノ摩擦 / 高分子電解質ブラシ / 走査型プローブ顕微鏡 / 分子運動論 |
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| Outline of Final Research Achievements |
In this work, we investigated frictional properties of a polyelectrolyte, NaPSS, brush in water that is strongly stretched away from its substrate by using SPM in order to elucidate the molecular mechanism of its low frictional properties. The friction force was proportional to sliding distance under small displacement conditions. A larger sliding intensity resulted in smaller and displacement-independent frictional force. This properties indicated physical adsorption between the stretched polymer chains and the rubbing object, kantilever tip, that makes the detected frictional force from lateral elasticity of the polymers in the former conditions and their desorption force from the sliding object in the latter.
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