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Fluonnated surfactants

The high thermal and chemical stability of fluorocarbons, combined with their very weak intermolecular interactions, makes them ideal stationary phases for the separation of a wide variety of organic compounds, including both hydrocarbons and fluorine-containing molecules Fluonnated stationary phases include per-fluoroalkanes, fluorocarbon surfactants, poly(chlorotrifluoroethylene), polyfper-fluoroalkyl) ethers, and other functionalized perfluoro compounds The applications of fluonnated compounds as stationary phases in gas-liquid chroma... [Pg.1029]

The size and shape of micelles also are affected by fluonnation Whereas hydrocarbon surfactants usually form spherical micelles, linear fluorocarbon surfactants tend to produce larger rodlike species [31, 32] This is attributed to two inherent characteristics of the (CFj), chain (1) it adopts a helical rather than a linear zigzag conformation [dd 34, 35,36], and (2) it is much suffer than the (CH2) chain J5 37, 38] The relatively stiff, helical (CF2) chains thus prefer cylindrical to spherical packing... [Pg.984]


See other pages where Fluonnated surfactants is mentioned: [Pg.983]    [Pg.983]    [Pg.983]    [Pg.983]    [Pg.983]    [Pg.983]   
See also in sourсe #XX -- [ Pg.984 ]

See also in sourсe #XX -- [ Pg.984 ]




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Fluonnation

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