The recent investigations of the polymer mixtures adsorption have been
summarised. The presented experimental evidence indicates the existen
ce of interrelation among the adsorption of polymers from mixtures, th
e thermodynamic compatibility of components in a solution, the variati
on of the thermodynamic quality of a <<mixed solvent>> (polymer + solv
ent), and the critical concentration of croosover for each component a
nd the averaged concentration for the mixture. The influence of the ag
gregation of macromolecules in solutions of mixtures on the adsorption
in the concentration regions abow and below critical concentration of
macromolecule globules overlapping has been shown.