Tetrahedron p. 411 - 428 (1991)
Update date:2022-08-04
Topics:
Selve
Ravey
Stebe
El Moudjahid
Moumni
Delpuech
Monodisperse new surfactant molecules with a two-chain polyoxyethylene (EO) hydrophilic head and a perfluoroalkyl hydrophobic moiety linked together through an amide bond are synthesized by methods allowing large-scale production. Surface tension measurements (γ ~ 20 mN·m-1) show slow organization of the surfactant film at the water/air interface for longer fluorocarbon tail. Values of critical micellar concentrations and comparisons with monosubstituted amide surfactants are consistent with a high hydrophilicity of the amide function, a small influence of branching over hydrophilicity, and a hydrophobicity of each CF2 unit equivalent to 1.7 methylenes (in the analogous hydrogenated surfactants).
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Doi:10.1007/BF00815163
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(2011)