In situ high-energy x-ray reflectivity studies of hydrophobic polyelectrolytes at the solid-liquid interface

Damien Baigl (1, 2) , Michele Sferrazza (3) , Marie-Alice Guedeau-Boudeville (1) , Raymond Ober (1) , François Rieutord (4, 5, 6) , Olivier Théodoly (7) , Claudine E. Williams (1)

1 LPFO - Laboratoire de physique des fluides organisés
2 Département de Chimie - ENS Paris
3 ULB - Université libre de Bruxelles
4 NRS - Nanostructures et Rayonnement Synchrotron
5 MEM - Modélisation et Exploration des Matériaux
6 ESRF - European Synchrotron Radiation Facility
7 PCMAC - Physico-chimie des milieux aqueux complexes

Well-defined hydrophobic polyelectrolytes adsorbed onto oppositely charged solid surfaces at the solid/liquid interface have been investigated. We have used in situ high-energy x-ray reflectivity to study how the thickness h of the adsorbed layer depends on the polymer effective charge fraction feff and on the chain length N. We have found , suggesting a pearl-necklace conformation for the chains in the adsorbed layer.

Domaines: Biomécanique [physics.med-ph]

Damien Baigl, Michele Sferrazza, Marie-Alice Guedeau-Boudeville, Raymond Ober, François Rieutord, et al.. In situ high-energy x-ray reflectivity studies of hydrophobic polyelectrolytes at the solid-liquid interface. Journal of Physics: Condensed Matter, 2005, 17 (41), pp.6329-6336. ⟨10.1088/0953-8984/17/41/004⟩. ⟨hal-00069828⟩