2026-03-06T02:35:28Z https://kansai-u.repo.nii.ac.jp/oai

oai:kansai-u.repo.nii.ac.jp:00016191 2023-11-22T06:24:22Z 528:1588:1589:1590 63:69

カルボン酸の低摩擦特性に及ぼす分子配向の影響 90758210 呂, 仁国 40512702 谷, 弘詞 60634681 小金沢, 新治 50298840 多川, 則男 Tagawa, Norio 多川 Tagawa 則男 Norio 関西大学 Kansai University Molecular alignment is a key to achieve an ultra-low friction coefficient. We found that friction coefficient decreased 49% when oleic acid (OAc) was added in poly-α-olefin (PAO), while only decreased 19% when added in polypropyleneglycol (PPG). FT-IR analysis indicates that the dimers of OAc became more easily aligned parallel to the sliding direction in PAO than in PPG. The associated carboxylic acids (OAc-PBAc), which feature two rings in the structure, an eight-membered cyclic carboxylic acid and a benzene ring, also decreased friction coefficient dramatically. FT-IR analysis indicates that the eight-membered cyclic carboxylic acid and the benzene ring were oriented parallel to the shearing plane. The oriented molecules led to low friction coefficient. Our results provide key insights into achieving ultralow friction coefficient through the design of the large, flat structures in lubricant molecules. 本研究は、2017年度関西大学若手研究者育成経費（個人研究）において、研究課題「潤滑剤分子の配向によるスマート潤滑システムの創成」として研究費を受け、その成果を公表するものである。 第22回関西大学先端科学技術シンポジウム 関西大学千里山キャンパス100周年記念会館 2018年1月18日（木）・19日（金） 2018-01-18 jpn conference paper VoR http://hdl.handle.net/10112/00020244 https://kansai-u.repo.nii.ac.jp/records/16191 https://kansai-u.repo.nii.ac.jp/record/16191/files/KU-1100-20180118-00.pdf application/pdf 577.4 kB 2020-07-03