Communication

Membrane Densification of Heated Polyelectrolyte Multilayer Capsules Characterized by Soft X-ray Microscopy†

  1. C. Déjugnat1,2,
  2. K. Köhler2,
  3. M. Dubois2,
  4. G. B. Sukhorukov3,
  5. H. Möhwald2,
  6. T. Zemb1,4,
  7. P. Guttmann5

Article first published online: 24 APR 2007

DOI: 10.1002/adma.200602643

Issue

Advanced Materials

Advanced Materials

Volume 19, Issue 10, pages 1331–1336, May, 2007

Additional Information

How to Cite

Déjugnat, C., Köhler, K., Dubois, M., Sukhorukov, G., Möhwald, H., Zemb, T. and Guttmann, P. (2007), Membrane Densification of Heated Polyelectrolyte Multilayer Capsules Characterized by Soft X-ray Microscopy. Advanced Materials, 19: 1331–1336. doi: 10.1002/adma.200602643

Author Information

  1. 1

    Institut de Chimie Séparative de Marcoule (ICSM), UMR 5257, CEA Valrhô, centre de Marcoule, BP 17171 Bagnols-sur-Cèze 30207 cedex (France)

  2. 2

    Max Planck Institute of Colloids and Interface, Wissenschaftspark Golm, Am Mühlenberg 1, 14424 Potsdam (Germany)

  3. 3

    Department of Materials, Queen Mary University of London, Mile End Road, London, E1 4NS (UK)

  4. 4

    Laboratoire Claude Fréjacques, URA331, CEA Saclay DRECAM/SCM/LCF Bat. 125, Gif-sur-Yvette 91191 cedex (France)

  5. 5

    Institut für Röntgenphysik, Georg-August-Universität Göttingen c/o BESSY, Albert-Einstein-Strasse 15, 12489 Berlin (Germany)

  1. †

    The authors thank Luc Belloni for useful discussions and the German-French European Network “Complex Fluids: From 3 to 2 Dimensions” for funding. Supporting Information is available online from Wiley InterScience or from the author.

Publication History

  1. Issue published online: 16 MAY 2007
  2. Article first published online: 24 APR 2007
  3. Manuscript Revised: 6 MAR 2007
  4. Manuscript Received: 20 NOV 2006

Funded by

  • German-French European Network “Complex Fluids: From 3 to 2 Dimensions”

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Keywords:

  • Microcapsules;
  • Microscopy;
  • Thermosensitive materials

Graphical Abstract

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Soft X-Ray microscopy is used for the quantitative analysis of temperature-sensitive hollow polyelectrolyte microcapsules made of poly(sodium styrene sulfonate) and poly(diallyl dimethyl ammonium chloride) (see figure). Upon heating to 90 °C they shrink and the polymer membrane becomes denser. The analysis of such systems in water shows, at 20 nm resolution, that membrane densification is accompanied by exclusion of about 50% of the hydration water, leading to homogeneously filled dense spheres without any loss of material.

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