Advertisement

Investigation of the Interaction of Certain Low Energy Liquids with Polytetrafluoroethylene and Polyethylene and its Implications in the Contamination of Polymeric Surfaces

  • F. Galembeck
  • S. E. Galembeck
  • H. Vargas
  • C. A. Ribeiro
  • L. C. M. Miranda
  • C. C. Ghizoni

Abstract

The interaction of some liquids with polytetrafluo-ethylene Teflon is examined, showing that low cohesive energy density liquids, characterized by low solubility parameters (Hildebrand’s δ), are absorbed in significant amounts by this polymer, as observed in the case of other polymers, including polyethylene. More stable contaminants can be formed if an absorbed liquid undergoes any chemical reaction before desorption, yielding solid, non diffusive products. The case of the interaction of Teflon and polyethylene with the organometallic, low δ liquid, iron pentacarbonyl is examined in detail and it is found that this liquid can be absorbed by the polymers and react in situ to give iron salts and oxides. Surface properties of the plastics are drastically altered, as evidenced by liquid contact angle measurements. Samples of iron oxide-contaminated Teflon were examined by electron microscopy and photo-acoustical and ESR spectra were obtained. These experiments show that the contaminant is ultrafine, superparamagnetic α- Fe2O3.

Keywords

Manganese Oxide Solubility Parameter Photoacoustical Signal Mercaptoacetic Acid Iron Pentacarbonyl 
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.
    R. W. Moncrieff, “Man-Made Fibres,” pp. 571–573, Wiley, New York, 1970.Google Scholar
  2. 2.
    W. A. Zisman in “Contact Angle, Wettability and Adhesion,” Advances in Chemistry Series No. 43, pp. 9–22, American Chemical Society, Washington, D.C., 1964.Google Scholar
  3. 3.
    R. J. Good in “Contact Angle, Wettability and Adhesion,” Advances in Chemistry Series No. 43, pp. 74–87, American Chemical Society, Washington, D.C., 1964.CrossRefGoogle Scholar
  4. 4.
    D. W. Dwight and W. M. Riggs, J. Colloid Interface Sci. 47, 650 (1974).CrossRefGoogle Scholar
  5. 5.
    H. Fitz and F. Mayer, G. Pat. 2,354,210; cf. Chem. Abs. 83, P148351Z (1975).Google Scholar
  6. 6.
    N. I. Egorenkov, D. A. Rodchenko, A. I. Barki and V. V. Kumaneva, USSR Pat. 458, 567; cf. Chem. Abs. 83, 60935g (1975).Google Scholar
  7. 7.
    J. T. Kenney, W. P. Townsend and J. A. Emerson, J. Colloid Interface Sci. 42, 589 (1973).CrossRefGoogle Scholar
  8. 8.
    D. Sage, P. Berticat and G. Vallet, Angew, Makromol. Chem. 54, 151 (1976).CrossRefGoogle Scholar
  9. 9.
    A. Baszkin, M. Nishino and L. Ter-Minassian Saraga, J. Colloid Interface Sci. 54, 317 (1976).CrossRefGoogle Scholar
  10. 10.
    F. Galembeck and P. Krumholz, J. Am. Chem. Soc. 93, 1909 (1971).CrossRefGoogle Scholar
  11. 11.
    F. Galembeck, J. Polymer Sci. Polym. Chem. Ed. (in press).Google Scholar
  12. 12.
    J. H. Hildebrand and R. L. Scott, “The Solubility of Non-Electrolytes,” 3rd ed., Reinhold, New York, 1950.Google Scholar
  13. 13.
    G. Gee, G. Allen and G. Wilson, Polymer 1, 456 (1960).CrossRefGoogle Scholar
  14. 14.
    W. H. Wade, J. Colloid Interface Sci. 47, 676 (1974).CrossRefGoogle Scholar
  15. 15.
    M. A. DePaoli, I. Tanashiro and F. Galembeck (1979), unpublished data.Google Scholar
  16. 16.
    M. L. Santos, N. F. Correa and D. M. Leitão, J. Colloid Interface Sci. 47, 621 (1974).CrossRefGoogle Scholar
  17. 17.
    F. Galembeck, “Modificacão Superficial e Impregnacão de Polímeros com Óxido de Ferro III,” Tese de Livre-Docência, São Paulo, 1977.Google Scholar
  18. 18.
    F. Galembeck, J. Polymer Sci. Polym. Lett. Ed. 15, 107 (1977).CrossRefGoogle Scholar
  19. 19.
    A. Breeuwsma and J. Lyklema, J. Colloid Interface Sci. 43, 437 (1972).CrossRefGoogle Scholar
  20. 20.
    F. Galembeck, C. C. Ghizoni, C. A. Ribeiro, H. Vargas and L. C. M. Miranda, (1978), submitted for publication.Google Scholar
  21. 21.
    F. Galembeck, N. F. Leite, H. Vargas and L. C. M. Miranda, (1978), submitted for publication.Google Scholar
  22. 22.
    A. Rosencwaig and A. Gersho, J. Appl. Phys. 47, 64 (1976).CrossRefGoogle Scholar
  23. 23.
    M. Eibshutz and S. Shtrikman, J. Appl. Phys. 39, 997 (1968).CrossRefGoogle Scholar
  24. 24.
    L. Neél, Ann. Geophys. 5, 99 (1949).Google Scholar
  25. 25.
    C. Kittel, Phys. Rev. 73, 810 (1948).CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • F. Galembeck
    • 1
  • S. E. Galembeck
    • 1
  • H. Vargas
    • 2
  • C. A. Ribeiro
    • 2
  • L. C. M. Miranda
    • 2
  • C. C. Ghizoni
    • 3
  1. 1.University of Sao PauloBrazil
  2. 2.State University of CampinasBrazil
  3. 3.INPESao Jose dos CamposBrazil

Personalised recommendations