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Issue 12, 2004
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Formation of mixed micelles of PB40PEO62 and the anionic surfactant SDS in aqueous solutions

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Abstract

Co-micellisation of the di-block copolymer polybutadiene-poly(ethylene oxide) (B40-b-EO62) with the anionic surfactant sodium dodecylsulfate (SDS) was investigated in aqueous solution using different scattering methods and cryo-transmission electron microscopy. In dilute aqueous solutions this polymer forms large wormlike micelles coexisting with spherical ones. Upon addition of the surfactant, the large, mainly wormlike block copolymer micelles exhibit a structural change. Mixed micelles of polymer and surfactant are formed and the size of the mixed aggregates changes in dependence on the amount of SDS. At a certain limiting concentration of SDS, only spherical mixed micelles with a radius of ca. 13 nm and a low polydispersity are observed in the solution. Further addition of surfactant does not induce any further structural change.

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Publication details

The article was received on 17 Nov 2003, accepted on 23 Apr 2004 and first published on 12 May 2004


Article type: Paper
DOI: 10.1039/B314757F
Phys. Chem. Chem. Phys., 2004,6, 3123-3129

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    Formation of mixed micelles of PB40PEO62 and the anionic surfactant SDS in aqueous solutions

    A. Nordskog, T. Fütterer, H. von Berlepsch, C. Böttcher, A. Heinemann, H. Schlaad and T. Hellweg, Phys. Chem. Chem. Phys., 2004, 6, 3123
    DOI: 10.1039/B314757F

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