Surface activity of perfluoropolyalkylether N,N-diphenylamide (PFPEA)

Autor:	Feng-Ling Qing, Minghua Yu, Wei-Dong Meng, Guotuan Gu
Rok vydání:	2007
Předmět:	Materials science Cyclohexane Mechanical Engineering Hexane Surface tension Contact angle chemistry.chemical_compound Adsorption chemistry X-ray photoelectron spectroscopy Chemical engineering Mechanics of Materials Polymer chemistry General Materials Science Thermal stability Benzene
Zdroj:	Journal of Materials Science. 42:8537-8543
ISSN:	1573-4803 0022-2461
DOI:	10.1007/s10853-007-1756-x
Popis:	A functional derivative of perfluoropolyalkylether, perfluoropolyalkylether N,N-diphenylamide (PFPEA) was synthesized and characterized by FT-IR, 1H and 19F NMR, and the thermo stability was determined by TG analysis. The surface activity of PFPEA was characterized by the determination of surface tension of organic solvents and the adsorption behavior on the surfaces of solids such as Fe, Al, Cu plates. PFPEA reduced the surface tension of organic solvents greatly such as benzene, toluene, hexane, and cyclohexane. PFPEA was adsorbed on surfaces of solids to form molecular thin films through the end groups. Surface properties of thin films of PFPEA formed by adsorption in organic solutions were characterized using contact angle measurements and X-ray Photoelectron Spectrum (XPS) analysis. The anti-wear performances of adsorbed thin films of PFPEA were determined on a four-ball tribo-tester under the lubrication of liquid lubricants. Films preadsorbed on the substrate surfaces could improve the anti-wear properties of liquid lubricants.
Databáze:	OpenAIRE
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