J. Phys. II France
Volume 1, Numéro 12, December 1991
Page(s) 1483 - 1490
DOI: 10.1051/jp2:1991164
J. Phys. II France 1 (1991) 1483-1490

Large loops in adsorbed polymer layers

M. Daoud and G. Jannink

Laboratoire Léon Brillouin, C.E.N. Saclay, 91191 Gif sur Yvette Cedex, France

(Received 24 July 1991, accepted 2 September 1991)

We discuss the formation of large loops in adsorbed polymer layers when the bulk concentration C is large. This allows us to introduce a new characteristic length  $\Lambda$ that corresponds to the extension of the loops in the bulk. We find that $\Lambda \sim {\rm NC}^{3/4}$ and increases from the screening length $\xi$ to the radius of the chains when concentration increases. This may be observed for instance by dilution of the solution subsequent to adsorption.

© Les Editions de Physique 1991