Note on the dispersion in perfluoropolyether lubricants of multi-walled carbon nanotubes functionalized with (tridecafluoro-1,1 ,2,2-tetrahydrooctyl)trichlorosilane.
Multi-walled carbon nanotubes functionalized with F3C-(CF2)5-(CH2)2-SiCl3, a molecule bearing a fluorinated terminal group is found to favor the carbon nanotubes dispersion in three perfluoropolyether fluids (Galden SV70, Fomblin Y25 and Fomblin YR1800). The stability of the suspension appears to be related to the perfluoropolyether viscosity. With respect to time, Fomblin YR1800, the more viscous fluid, leads to the most stable solutions, followed in order by Fomblin Y25 and Galden SV70. In general the smallest particles stay in suspensions. Stability extending over more than one year is observed in the case of Fomblin YR1800.
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Laboratoire de Chimie et d'Electrochimie des Surfaces, Facultés Universitaires Notre-Dame de la Paix, rue de Bruxelles 61, B-5000 Namur, Belgium.
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Delhalle
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Fonseca
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Nagy
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Mekhalif
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D000473:Alkanes / Q000737:chemistry*; D003102:Colloids / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D004987:Ethers / Q000737:chemistry*; D005466:Fluorocarbons / Q000737:chemistry*; D008153:Lubrication; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012821:Silanes / Q000737:chemistry*; D012996:Solutions; D013499:Surface Properties
D000473:Alkanes; D003102:Colloids; D004987:Ethers; D005466:Fluorocarbons; D046911:Macromolecular Substances; D012821:Silanes; D012996:Solutions; C078113:perfluoropolyether; C410437:tridecafluoro-1,1,2,2-tetrahydrooctyl-1-dimethylchlorosilane