マイクロSEIRASによるオレイン酸界面濃縮のその場観察（第2報）
書誌事項
- タイトル別名
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- <i>In Situ</i> Observation of Concentration of Oleic Acid at Sliding Interface by Micro-SEIRAS (Part 2)
- ―Effect of Base Oil―
- ―基油の影響―
抄録
<p>Micro-SEIRAS (Surface Enhanced Infra-Red Absorption Spectroscopy) was applied to investigate change in surface concentration of oleic acid from the dilute solution of 0.1 mass% under shearing conditions. The intensity of C=O vibration originating from oleic acid increased with shearing time and was maintained after termination of shearing. SEIRAS spectra revealed that there are two species, monomer and dimer of oleic acid in the concentrated layer. The effect of base oil on the surface concentration was investigated using polyalpha olefin (PAO), mineral oil (150N) and polypropylene glycol (PPG) as base oils. Although the surface concentration was observed with PAO and mineral oil as base oils, the C=O intensity did not increase when PPG, polar compound was used. The concentrated oleic acid at the interface was removed under shearing condition by replacing lubricant with base oil, PPG. The removal of dimer of oleic acid was easier than monomer which adsorbed on the surface. It can be concluded that the formation of concentrated layer of oleic acid under shearing conditions was closely dependent on the solubility of oleic acid in base oil.</p>
収録刊行物
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- トライボロジスト
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トライボロジスト advpub (0), 2024-02-15
一般社団法人 日本トライボロジー学会
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詳細情報 詳細情報について
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- CRID
- 1390580626908048896
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- ISSN
- 21899967
- 09151168
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
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- 抄録ライセンスフラグ
- 使用不可