Internal structure of a thin film of mixed polymeric micelles on a solid/liquid interface

I.K. Voets, W.M. de Vos, P.S. Hofs, A. de Keizer, M.A. Cohen Stuart, R. Steitz, D. Lott

Research output: Contribution to journalArticleAcademicpeer-review

20 Citations (Scopus)

Abstract

The adsorption of mixed micelles of poly(4-(2-amino hydrochloride-ethylthio)-butylene)-block-poly(ethylene oxide), PAETB49-b-PEO212 and poly(4-(2-sodium carboxylate-ethylthio)-butylene)-block-poly(ethylene oxide), PCETB47-b-PEO212 on solid/liquid interfaces has been studied with light, X-ray, and neutron reflectometry. The structure of the adsorbed layer can be described with a two-layer model consisting of an inner layer formed by the coacervate of the polyelectrolyte blocks PAETB49 and PCETB47 (~1 nm) and an outer layer of PEO212 blocks (~6 nm). The micelles unfold upon adsorption forming a rather homogeneous flat layer that exposes its polyethylene oxide chains into the solution, thus rendering the surface antifouling after modification with the micelles.
Original languageEnglish
Pages (from-to)6937-6945
JournalThe Journal of Physical Chemistry Part B: Condensed Matter, Materials, Surfaces, Interfaces & Biophysical
Volume112
Issue number23
DOIs
Publication statusPublished - 2008

Keywords

  • functional block-copolymers
  • polyelectrolyte multilayers
  • neutron reflectivity
  • aqueous-solution
  • x-ray
  • reflectometry
  • scattering
  • surface
  • adsorption
  • silica

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