Nano-and Micro-tribology of Molecular Layers of Macromolacular Compounds on Solid Surfaces

• Project/Area Number: 21360070
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: MASUKO Masabumi 東京工業大学, 大学院・理工学研究科, 教授 (60111663)
• Co-Investigator(Renkei-kenkyūsha): SUZUKI Akihito 東京工業大学, 大学院・理工学研究科, 助教 (30235931)
• Research Collaborator: AOKI Saiko 東京工業大学, 大学院・理工学研究科, 助教 (30463053)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000); Fiscal Year 2011: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2010: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000); Fiscal Year 2009: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
• Keywords: トライボロジー / 走査プローブ顕微鏡 / 省エネルギー / 表面界面物性 / 潤滑油用高分子量耐荷重添加剤

Research Abstract

The proposed friction reducing mechanism of high molecular weight additives that might be brought by the high adsorption capability or low desorption tendency of molecules was confirmed experimentally. It was also found from the temperature programmed experiments that although the low molecular weight compounds having long straight alkyl chain exhibited better lubrication performance under moderate temperature, the high molecular weight compounds showed excellent lubrication performance under higher temperature. It was confirmed from the various experiments using polar base oils that the improvement of lubrication performance of high molecular weight additives is related to the swelling of long molecular chain.

Research Products

• [Presentation] Micro-scale Observation of Friction Characteristic of Oriented Adsorbed Organic Molecular Layer Having Different Nano-scale Morphology, Advances in Lubrication (2012)
  • Author(s): Masabumi Masuko, Akisa Uchida, Tomoya Konishi, Saiko Aoki, Akihito Suzuki
  • Organizer: Linking Molecular Meso, and Machine Scales
  • Place of Presentation: Puntarenas, Costa Rica
  • Year and Date: 2012-01-08
• [Presentation] Micro-scale Observation of Friction Characteristic of Oriented Adsorbed Organic Molecular Layer Having Different Nano-scale Morphology (2012)
  • Author(s): Masabumi Masuko, Akisa Uchida, Tomoya Konishi, Saiko Aoki, Akihito Suzuki
  • Organizer: Advances in Lubrication : Linking Molecular, Meso, and Machine Scales
  • Place of Presentation: Puntarenas, Costa Rica
  • Year and Date: 2012-01-08
• [Presentation] Verification of Advantages in Friction-Reducing Performance of Organic Polymers having Multiple Adsorption Sites (2011)
  • Author(s): Saiko Aoki, Yuki Yamada, Daisuke Fukada, Akihito Suzuki, Masabumi Masuko
  • Organizer: 38th Leeds-Lyon Symposium on Tribology
  • Place of Presentation: INSA of Lyon, France
  • Year and Date: 2011-09-08
• [Presentation] How orientation structure of surface-adsorbed molecular layer affects its friction resistance (2011)
  • Author(s): Masabumi Masuko, Tomoya Konishi, Akihito Suzuki
  • Organizer: 38th Leeds-Lyon Symposium on Tribology
  • Place of Presentation: INSA of Lyon, France
  • Year and Date: 2011-09-08
• [Presentation] Verification of Advantages in Friction-Reducing Performance of Organic Polymers having Multiple Adsorption Sites (2011)
  • Author(s): Saiko Aoki, Yuki Yamada, Daisuke Fukada, Akihito Suzuki, Masabumi Masuko
  • Organizer: 38^<th> Leeds-Lyon Symposium on Tribology
  • Place of Presentation: INSA of Lyon, France
  • Year and Date: 2011-09-08
• [Presentation] How orientation structure of surface-adsorbed molecular layer affects its friction resistance (2011)
  • Author(s): Masabumi Masuko, Tomoya Konishi, Akihito Suzuki
  • Organizer: 38^<th> Leeds-Lyon Symposium on Tribology
  • Place of Presentation: INSA of Lyon, France
  • Year and Date: 2011-09-08
• [Presentation] 添加剤としての高分子化合物の境界潤滑性能評価(第二報) (2010)
  • Author(s): 山田雄輝,鈴木章仁,益子正文
  • Organizer: 日本トライボロジー学会トライボロジー会議2010秋福井
  • Place of Presentation: 福井大学工学部
  • Year and Date: 2010-09-15
• [Presentation] 添加剤としての高分子化合物の境界潤滑性能評価(第二報) (2010)
  • Author(s): 山田雄輝, 鈴木章仁, 益子正文
  • Organizer: 日本トライポロジー学会トライポロジー会議
  • Place of Presentation: 福井大学工学部
  • Year and Date: 2010-09-15