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Preparing microemulsions with silicone surfactants

  • Emulsions, Microemulsions, Foams
  • Conference paper
  • First Online:
Book cover Structure, Dynamics and Properties of Disperse Colloidal Systems

Part of the book series: Progress in Colloid & Polymer Science ((PROGCOLLOID,volume 111))

  • 222 Accesses

Abstract

In this paper, we present the results of investigations on the microemulsification of short-chain siloxanes, in particular, hexamethyl-disiloxane (HMDS), by silicone surfactants of the polyoxyethylene and amine type. The ethoxylated surfactants exhibit a temperature-dependent phase behavior similar to that of the well-known alkyl poly(glycol ethers). The amines phase behavior is less sensitive to temperature and microemulsions emerge after addition of short-chain alkanols, thereby their carbon number being a function of the size of the surfactants hydrophobic part. The amount of amphiphile (and alkanol) required for homogeneous mixtures of water and HMDS falls within the range of 15–25 wt%. The phase behavior is rather insensitive to added salt. Serious problems for the stability of microemulsions arise from the sensitivity of the surfactants to hydrolytic decomposition. Only the amine derivative with a (CH3)3 Sihydrophobe exhibits a necessary long-time stability.

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Authors and Affiliations

  1. Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Rudower Chaussee 5, D-12489, Berlin, Germany

    H. von Berlepsch & R. Wagner

Authors
  1. H. von Berlepsch
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  2. R. Wagner
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Editor information

Heinz Rehage Gerhard Peschel

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© 1998 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG

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von Berlepsch, H., Wagner, R. (1998). Preparing microemulsions with silicone surfactants. In: Rehage, H., Peschel, G. (eds) Structure, Dynamics and Properties of Disperse Colloidal Systems. Progress in Colloid & Polymer Science, vol 111. Steinkopff. https://doi.org/10.1007/BFb0118118

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  • DOI: https://doi.org/10.1007/BFb0118118

  • Published:

  • Publisher Name: Steinkopff

  • Print ISBN: 978-3-7985-1118-7

  • Online ISBN: 978-3-7985-1652-6

  • eBook Packages: Springer Book Archive

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