Abstract
The adsorption of mixtures of thermodynamically compatibile and incompatibile polymer pairs from common solvent has been studied in the concentration regime of dilute and semidilute solutions. The critical concentration of overlapping(crossover region) was being dependent on the component ratio estimated from the relationship [η]AV=[η]AφA+[η]BφB Where [η]i is intrinsic viscosity of pure components in common solvent, φA and φB are their volume fractions in the mixture and [η]AV average intrinsic viscosity of the mixture. It was found that by transition from dilute to semidilute regime the processes of macromolecular aggregation proceed and during adsorption macromolecular aggregares pass onto the adsorbent surface. This transition diminishes in the crossover region. Considering solution of polymer mixture A+B as a solution of A in mixed solvent(solvent + B) and vice versa, the peculiarities of adsorption are discussed, which are connented with changing thermodynamic qusllity of mixed solvent.
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