Stability and adsorption properties of electrostatic complexes: design of hybrid nanostructures for coating applications.
We report the presence of a correlation between the bulk and interfacial properties of electrostatic coacervate complexes. Complexes were obtained by co-assembly between cationic-neutral diblocks and oppositely charged surfactant micelles or 7 nm cerium oxide nanoparticles. Light scattering and reflectometry measurements revealed that the hybrid nanoparticle aggregates were more stable through both dilution and rinsing (from either a polystyrene or a silica surface) than their surfactant counterparts. These findings were attributed to a marked difference in critical association concentration between the two systems and to the frozen state of the hybrid structures.
Qi
Ling
L
Complex Fluid Laboratory, UMR CNRS/Rhodia 166, Rhodia North-America, R&D Headquarters CRTB, 350 George Patterson Boulevard, Bristol, PA 19007, USA.
Chapel
Jean-Paul
JP
Castaing
Jean-Christophe
JC
Fresnais
Jérôme
J
Berret
Jean-François
JF