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The influence of water on the adsorption and the tribological properties of unsaturated fatty acids in alkane solution
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Surface Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Physical Chemistry.
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2011 (English)In: Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, ISSN 1350-6501, E-ISSN 2041-305X, Vol. 225, no J10, 1048-1055 p.Article in journal (Refereed) Published
Abstract [en]

The moisture uptake of the three unsaturated fatty acids, oleic acid, linoleic acid, and linolenic acid has been investigated. The amount of water absorbed by the fatty acids increased with increasing degree of unsaturation. The influence of the water on the adsorption onto steel and lubricating properties of the fatty acid in hexadecane was investigated. The adsorption, as determined with quartz crystal microbalance of 0.1 and 1 wt% of oleic acid onto steel was not affected by the presence of water (1.5 mole% water in fatty acid) while 5.6 mole% water enhanced the adsorbed amount of linolenic acid. Even though this amount of water had a large influence on the adsorption of linolenic acid, it did not affect the friction and wear measured with high frequency reciprocating rig using oleic acid or linolenic acid in hexadecane.

Place, publisher, year, edition, pages
2011. Vol. 225, no J10, 1048-1055 p.
Keyword [en]
unsaturated fatty acid, oleic acid, linoleic acid, linolenic acid, moisture uptake, adsorption, wear, friction, HFRR, QCM
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-46180DOI: 10.1177/1350650111411379ISI: 000295284900008Scopus ID: 2-s2.0-81255136612OAI: oai:DiVA.org:kth-46180DiVA: diva2:453573
Note
QC 20111103Available from: 2011-11-03 Created: 2011-11-02 Last updated: 2017-12-08Bibliographically approved

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Lundgren, Sarah M.Nordstierna, LarsClaesson, Per Martin
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