Voets, I.K. ; de Vos, W.M. ; Hofs, B. ; de Keizer, A. ; Cohen Stuart, M. A. ; Steitz, R. ; Lott, D.: Internal structure of a thin film of mixed polymeric micelles on a solid/liquid interface. The Journal of Physical Chemistry B 112 (2008), p. 6937-6945
10.1021/jp709758p
Abstract:
The adsorption of mixed micelles of poly(4-(2-aminohydrochloride-ethylthio)-butylene)-blockpoly( ethylene oxide), PAETB49-b-PEO212 and poly(4-(2-sodium carboxylate-ethylthio)- butylene)-blockpoly( 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.