Electrochemical behavior of cationic polyelectrolites at a polarized liquid/liquid interface

C. CÁMARA; J.S. RIVA; A.V. JUAREZ; L.M. YUDI

SPRINGER

Lugar: Berlin; Año: 2014 vol. 44 p. 1381 - 1381

he behavior of several cationic polyelectrolytes (Chitosan, CHI; Polyquaternium-4, PQ4; Diethylaminoethyl dextran, DEAE; Polyquaternium-10, PQ10, and Aminoacrylmethacrylate copolymer, Eudragit® E100) at a polarized liquid/liquid interface is analyzed and compared in the present paper. From the analysis of voltammetric results it was possible to obtain some relationships between polymer structure and the tendency to adsorb at the interface. On another hand, it was possible to determine the substitution degree of a polymer comprising a chitosan main chain modified with glycidyltrimethylammonium chloride, GTMAC (chitosan-GTMAC) and the values obtained are in agreement with those calculated using another methodologies. Finally we report a comparative study concerning to the effect of cationic (chitosan) and anionic (dextran sulphate) polyelectrolytes on the compactness of a phospholipid film.