Stability of low-tension interfaces and propagation of longitudinal waves: Role of the electrical double layers

https://doi.org/10.1016/0021-9797(82)90264-8Get rights and content

Abstract

A linear hydrodynamic analysis isdeveoped in order to study the mechanical stability and the surface wave properties of a charged interface between two immiscible Newtonian fluids. The Boltzmann ionic distribution is instantaneously restored in the diffuse layers and the adsorption—desorption steps are assumed to be the determinant process for the mass transport between bulk and interface. Surface tension gradients and longitudinal electrical stresses are considered. The surface potential may be higher than the value corresponding to the considered thermal energy (⋍25 mV at 300°K). The negative electrical contribution to the total interfacial tension is responsible for the onset of surface motion while the influence of the viscosity on low-tension interfaces has a stabilizing effect. Finally the role of the surface charge and of the adsorption—desorption process on the dynamic surface elasticity is discussed.

References (48)

  • C.A Miller et al.

    J. Colloid Interface Sci.

    (1970)
  • C.A Miller et al.

    J. Colloid Interface Sci.

    (1970)
  • J Lucassen et al.

    J. Colloid Interface Sci.

    (1966)
    J Lucassen et al.

    J. Colloid Interface Sci.

    (1967)
  • J Lucassen et al.

    Chem. Eng. Sci.

    (1972)
  • E Lucassen-Reynders et al.
  • H.C Maru et al.

    Chem. Eng. Sci.

    (1979)
  • D Langevin

    J. Colloid Interface Sci.

    (1981)
  • D Langevin et al.

    J. Phys. D.

    (1980)
  • S.R De Groot et al.

    Nonequilibrium Thermodynamics

    (1962)
  • E Ruckenstein et al.

    J. Chem. Soc. Faraday, Trans. 2

    (1975)
  • Hennenberg, M., Sanfeld, A., and Bisch, P. M., A.I.Ch.E. J., in...
  • W Dalle Vedove et al.

    J. NonEquilib. Thermodyn.

    (1980)
  • J.T Davies

    Turbulence Phenomena

    (1972)
  • C.V Sternling et al.

    Amer. Inst. Chem. Eng. J.

    (1959)
  • J.R Melcher

    J. Fluid, Mech.

    (1973)
  • R.E Zelazo et al.

    Phys. Fluids

    (1974)
  • P.M Bisch
  • P.M Bisch et al.
  • M Dupeyrat et al.
  • J Guastalla et al.

    J. Chim. Phys.

    (1970)
  • P Joos et al.

    Lecture Notes in Physics No. 72

  • A Watanabe et al.

    J. Colloid Interface Sci.

    (1978)
  • D.O Shah et al.
  • D Papaphadjopoulos et al.

    Biochim. Biophys. Acta

    (1977)
  • Cited by (13)

    • Emulsions stability, from dilute to dense emulsions - Role of drops deformation

      2008, Advances in Colloid and Interface Science
      Citation Excerpt :

      In fact, the surface dilational elasticity is a complex quantity involving dissipative and time dependent mechanisms such as viscous and transport phenomena. Theoretical developments on the functional form of the surface dilational modulus have been analyzed by Lucassen and van den Tempel [358] thirty years ago, by the Brussels group [228,359,360] ten years later and more recently by Fruhner and Wantke [361]. Nice experiments on dynamic surface tension responses to harmonic surface perturbations in the low-frequency range permit to determine the surface dilational modulus and the obtained values interpreted in terms of a diffusion-controlled model [362].

    View all citing articles on Scopus
    View full text