title: Relaxation phenomena of hydrolyzed polyvinylamine molecules adsorbed at the silica/water interface II. Saturated heterogeneous polymer layers.
abstract: Surface area exclusion chromatography (SAEC) was employed to determine the individual relaxation of polymer molecules within a saturated heterogeneous layer composed of two polymers of different molecular characteristics. The investigations focused on three systems differing in molecular weight and/or hydrolysis grade. The molecular relaxation process was determined to be different within the heterogeneous layer when compared with the behavior of the same polymer in the homogeneous layer. The modifications in the relaxation process of a given polymer were imposed by the interfacial characteristics of the second polymer. Finally, in heterogeneous layers, the relative variation of the interfacial area of the two polymers is expressed in a single relationship.
authors.affiliation: Institut Charles Sadron, 6 rue Boussingault, 67083 Strasbourg cedex, France.
authors.forename: Otman
authors.initials: O
authors.lastname: Oulanti
authors.forename: Emile
authors.initials: E
authors.lastname: Pefferkorn
authors.forename: Simon
authors.initials: S
authors.lastname: Champ
authors.forename: Helmut
authors.initials: H
authors.lastname: Auweter