Prevention of Strong Adhesion of Dust Particles

  • Richard W. Nosker
  • Richard Williams

Abstract

Strong adhesion of dust particles results when water soluble components in dust particles are first solubilized, and then recrystallized, after a successive rise and fall of the relative humidity. The recrystallized salt greatly increases the contact area with the substrate, thereby increasing the adhesion. We have investigated the use of thin film lubricants and surfactants to avoid strong adhesion after the humidity cycle. We found that, while some surfactants can prevent the strong attachment of particles by causing secondary nucleation in some precipitating salts, the most effective means of preventing strong adhesion is to use a thin film lubricant that cannot be displaced from the substrate by a forming water droplet. We analyze the requirements for a successful system in terms of the polar and dispersion components of surface energy.

Keywords

Contact Angle Interfacial Tension Dust Particle Strong Adhesion Lubricant Additive 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    D.L. Ross, “Coatings for VideoDiscs,” RCA Review, 39,136(1978) .Google Scholar
  2. 2.
    R. Williams and R.W. Nosker, these proceedings.Google Scholar
  3. 3.
    D.H. Kaelble, “Physical Chemistry of Adhesion,” Wiley, New York (1971).Google Scholar
  4. 4.
    S. Wu, J. Polymer Sci. C, 34, 19 (1971).Google Scholar
  5. 5.
    F.M. Fowkes, editor, “Chemistry and Physics of Interfaces,” American Chemical Society Publications, Washington,D.C.(1965).Google Scholar
  6. 6.
    W.D. Harkins, in “Physical Methods of Organic Chemistry”, Vol. 1, A. Weissberger, editor, Interscience, New York (1971).Google Scholar
  7. 7.
    N.K. Adam, “The Physics and Chemistry of Surfaces,” 3rd Ed., Oxford University Press, London (1941).Google Scholar

Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • Richard W. Nosker
    • 1
  • Richard Williams
    • 1
  1. 1.David Sarnoff Research CenterSubsidiary of SRI InternationalPrincetonUSA

Personalised recommendations