Interfacial Activity of Polydimethylsiloxane

  • M. J. Owen


The polydimethylsiloxane (PDMS) polymer is an unusual macromolecular amphiphile composed of pendent organic methyl groups along the siloxane backbone. The combination of the low intermolecular forces associated with the methyl groups and the unique flexibility of the siloxane chain has resulted in a material with many important surface-related applications (liquid/air and solid/air phenomena). Familiar examples include the use of PDMS-containing materials as antifoaming agents, polyurethane foam stabilizers, and wetting agents. Interface-related applications (i.e., liquid/liquid and solid/liquid) are less familiar but growing in importance. Developing areas of this type include integral RIM (reaction injection moulding) release agents, de-emulsifiers, and dewatering aids. The structure/property/application correlation for PDMS is illustrated by a related trio of applications; antifoaming, de-emulsification, and dewatering. These are examples of destabilizing surface and interfacial activity at the air/liquid, liquid/liquid and solid/liquid interface respectively. This last area is the least well known so it is given the most emphasis. Dewatering of fine coal is the specific application chosen to illustrate this area.


Contact Angle Interfacial Tension Electric Power Research Institute Fine Coal Coal Slurry 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    M. J. Owen, Ind. Eng. Chem. Prod. Res. Dev., 19 ,97 (1980).CrossRefGoogle Scholar
  2. 1a.
    M. J. Owen, Chemtech, 11, 288 (1981).Google Scholar
  3. 2.
    H. W. Fox, P. W. Taylor, and W. A. Zisman, Ind. Eng. Chem., 39, 1401 (1947).CrossRefGoogle Scholar
  4. 3.
    K. S. Siow and D. Patterson, J. Phys. Chem., 77, 356 (1973).CrossRefGoogle Scholar
  5. 4.
    L-H. Lee, J. Adhesion, 4, 39 (1972).CrossRefGoogle Scholar
  6. 5.
    D. K. Owens and R. C. Wendt, J. Appl, Polym. Sci., 13, 1741 (1969).CrossRefGoogle Scholar
  7. 6.
    M. J. Hunter, M. S. Gordon, A. J. Barry, J. F. Hyde, and R. D. Heidenreich, Ind. Eng. Chem., 39, 1389 (1947).CrossRefGoogle Scholar
  8. 7.
    N. L. Jarvis, J. Phys. Chem., 70, 3027 (1966).CrossRefGoogle Scholar
  9. 8.
    W. Noll, “Chemistry and Technology of Silicones”, p. 458, Academic Press, New York, 1968.Google Scholar
  10. 9.
    K. E. Polmanteer and M. J. Hunter, J. Appl. Polym. Sci., 1, 3 (1959).CrossRefGoogle Scholar
  11. 10.
    A. V. Tobolsky, “Properties and Structure of Polymers”, p. 67, Wiley, New York, 1960.Google Scholar
  12. 11.
    T. Kataoka and S. Ueda, J. Polym. Sci., Part B, 4, 317 (1966).CrossRefGoogle Scholar
  13. 12.
    R. R. McGregor, “Silicones and Their Uses”, p. 38, McGraw-Hill, New York, 1954.Google Scholar
  14. 13.
    Dow Corning Corp. Data Sheet No. 22-928-82.Google Scholar
  15. 14.
    H. Yasuda and V. Stannett, in “Polymer Handbook”, 2nd. Ed., J. Brandrup and E. H. Immergut, Editors, p. 111–229, Wiley, New York, 1975.Google Scholar
  16. 15.
    I. Lichtman and T. Gammon, in “Kirk-Othmer Encyclopedia of Chemical Technology”, p. 430, Vol. 7, Wiley, New York, 1979.Google Scholar
  17. 16.
    S. J. Ross, “The Inhibition of Foaming”, Rensselaer Polytechnic Inst. Bull. No. 63, 1950.Google Scholar
  18. 17.
    See, for example, R. D. Kulkarni and L. D. Goddard, Croat. Chem. Acta., 50, 163 (1977).Google Scholar
  19. S. Ross and G. Nishioka, J. Colloid Interface Sci., 65, 216 (1978).CrossRefGoogle Scholar
  20. 18.
    H. Theile, H. Hoffman, G. Rossmy, G. Koerner, and P. Zaske, (to Th. Goldschmidt AG), U.S. Patent 4,183,820, Jan. 15, 1980.Google Scholar
  21. G. Koerner and G. Rossmy, (to Th. Goldschmidt AG), U.S. Patent 3,677,962, July 18, 1972.Google Scholar
  22. M. J. Owen (to Dow Corning Ltd.), British Patent 1,360,398, July 17, 1974.Google Scholar
  23. 19.
    H-F. Fink, G. Koerner, and G. Rossmy, (to Th. Goldschmidt AG), U.S. Patent 4,029,596, June 14, 1977.Google Scholar
  24. 20.
    M. J. Owen, in “Proc. VI Int. Cong. Surface Activity”, (Zurich), p. 623, Carl Hanser Verlag, Munich, 1973.Google Scholar
  25. 21.
    See, for example, E. G. Schwarz and W. G. Reid, Ind. Eng. Chem., 56, 26 (1964).CrossRefGoogle Scholar
  26. H. Maki, T. Suga, I. Ikeda and S. Komari, J. Japan Oil Chem. Soc., 29, 245 (1970).CrossRefGoogle Scholar
  27. A. G. Kanellopoulos and M. J. Owen, J. Colloid Interface Sci., 35, 120 (1971).CrossRefGoogle Scholar
  28. 22.
    V. R. Gray, J. Inst. Fuel, 31, 96 (1958).Google Scholar
  29. T. Mielecki and G. Kurzeja, Prace GIG, B-253, 3 (1960).Google Scholar
  30. 23.
    M. J. Owen, “Mechanism of Fine Coal Dewatering by Silicone Additives”, EPRI CS-3548 Report of Project No. 1030–20, June 1984. Obtainable from EPRI Research Reports Center, Box 50490, Palo Alto, CA, 94303.Google Scholar
  31. 24.
    I. G. C. Dryden, Fuel, 29, 197, 221 (1950).Google Scholar
  32. 24a.
    I. G. C. Dryden, Fuel, 30, 39 (1951).Google Scholar
  33. 25.
    M. J. Owen and T. J. Swihart, Fuel, 63, 129 (1984).CrossRefGoogle Scholar
  34. 26.
    O. L. Flaningam, M. J. Owen, D. J. Romenesko and A. Zombeck, This Conference.Google Scholar

Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • M. J. Owen
    • 1
  1. 1.Dow Corning CorporationMidlandUSA

Personalised recommendations