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Trends in Colloid and Interface Science XII pp 25–28Cite as

Structure and dynamics of star polymers

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Part of the book series: Progress in Colloid & Polymer Science ((PROGCOLLOID,volume 110))

Abstract

The structural and dynamical properties of an 18-arm poly(isoprene) star polymer (M armn =7360 g mol−1) are investigated by experiment and theory. Light scattering techniques reveal the existence of static and dynamic long range correlations (ξ ≈ 100 nm) above the overlap concentration c*, which are an indication for a structural glass transition at higher concentrations. Combining statistical-mechanical theories and small angle neutron scattering (SANS), it is shown that the effective pair potential between star polymers is exponentially decaying for large distances and crosses over, at a density-dependent corona diameter, to an ultra-soft logarithmic repulsion for small distances. Finally, neutron spin echo spectroscopy (NSE) is used to investigate the influence of interstar entanglements on the internal dynamics of the star polymer. Hence, star polymers can actually be viewed as hybrids between polymer-like entities and colloidal particles establishing an important link between these different domains of physics.

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Authors and Affiliations

  1. IFF-Neutronenstreuung II Forschungszentrum Jülich, D-52425, Jülich, Germany

    J. Stellbrink, B. Abbas, J. Allgaier, M. Monkenbusch & D. Richter

  2. IFF-Theorie II Forschungszentrum Jülich, D-52425, Jülich, Germany

    C. N. Likos & H. Löwen

  3. Institut für Theoretische Physik II, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, D-40225, Düsseldorf, Germany

    H. Löwen & M. Watzlawek

Authors
  1. J. Stellbrink
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  2. B. Abbas
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  3. J. Allgaier
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  4. M. Monkenbusch
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  5. D. Richter
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  6. C. N. Likos
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  7. H. Löwen
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  8. M. Watzlawek
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Editor information

G. J. M. Koper D. Bedeaux C. Cavaco W. F. C. Sager

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

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Stellbrink, J. et al. (1998). Structure and dynamics of star polymers. In: Koper, G.J.M., Bedeaux, D., Cavaco, C., Sager, W.F.C. (eds) Trends in Colloid and Interface Science XII. Progress in Colloid & Polymer Science, vol 110. Steinkopff. https://doi.org/10.1007/BFb0118042

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  • DOI: https://doi.org/10.1007/BFb0118042

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  • Publisher Name: Steinkopff

  • Print ISBN: 978-3-7985-1117-0

  • Online ISBN: 978-3-7985-1653-3

  • eBook Packages: Springer Book Archive

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