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Interfacial Activity of Polydimethylsiloxane

  • Chapter
Surfactants in Solution

Abstract

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.

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Author information

Authors and Affiliations

  1. Dow Corning Corporation, Midland, Michigan, 48640, USA

    M. J. Owen

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  1. M. J. Owen
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Editor information

Editors and Affiliations

  1. IBM Corporate Technical Institutes, 500 Columbus Ave., Thornwood, NY, 10594, USA

    Kashmiri Lal Mittal M.Sc.(First Class First), Ph.D. (Fellow of the American Institute of Chemists and Indian Chemial Society) (Fellow of the American Institute of Chemists and Indian Chemial Society)

  2. Centre de Recherches Paul Pascal, Domaine Universitaire, F-33405, Talence Cedex, France

    P. Bothorel (Professor of Chemistry at the University of Bordeaux, Assistant Director, Scientific Director of the GRECO “Microemulsions” (French cooperative action on microemulsions), consultant to the French Oil Company) (Professor of Chemistry at the University of Bordeaux, Assistant Director, Scientific Director of the GRECO “Microemulsions” (French cooperative action on microemulsions), consultant to the French Oil Company)

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© 1986 Plenum Press, New York

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Owen, M.J. (1986). Interfacial Activity of Polydimethylsiloxane. In: Mittal, K.L., Bothorel, P. (eds) Surfactants in Solution. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1833-0_33

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  • DOI: https://doi.org/10.1007/978-1-4613-1833-0_33

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4612-9024-7

  • Online ISBN: 978-1-4613-1833-0

  • eBook Packages: Springer Book Archive

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