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The European Physical Journal E

, Volume 13, Issue 4, pp 391–400 | Cite as

Inter-lamellar interactions modulated by addition of guest components

  • M. ImaiEmail author
  • R. Mawatari
  • K. Nakaya
  • S. Komura
Article

Abstract.

We have investigated the effects of a guest component (polymer or spherical colloidal particle) confined between flexible lamellar slits on the inter-lamellar interaction by means of a small-angle X-ray scattering technique and a neutron spin echo technique. The dominant interaction between flexible lamellar membranes without guest components is the Helfrich mechanism. The addition of a neutral polymer into the lamellar phase induces an attractive inter-lamellar interaction and finally destabilizes the lamellar phase. On the other hand, spherical colloidal particles confined between flexible lamellar membranes reduce the undulational fluctuations of lamellae and bring a repulsive inter-lamellar interaction. The behavior of the layer compression modulus of the lamellar membrane containing colloidal particles is well described by the entropical repulsive inter-lamellar interaction driven by steric hindrance.

Keywords

Polymer Steric Hindrance Colloidal Particle Compression Modulus Lamellar Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  1. 1.Department of Physics, Faculty of ScienceOchanomizu UniversityTokyoJapan
  2. 2.Department of Chemistry, Faculty of ScienceTokyo Metropolitan UniversityTokyoJapan

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