Abstract
The adsorption isotherms and adsorption kinetics for mixtures of triblock water-soluble polymers having poly(ethylene glycols) with a molecular weights of 12 000, 62 000, and 120 000 g/mol as the middle block and C 16 H 33 linear alkyl groups on each end of the molecule onto silica (SiO 2 ) and polystyrene film substrates were studied by ellipsometry. Equations for activity coefficients were derived (a) to calculate the adsorption isotherm for a mixture by using the experimental adsorption isotherms for individual species, (b) to calculate the adsorption isotherm for individual species of a mixture by using the experimental adsorption for a mixture, and (c) to predict behaviors of individual species in a mixture by using the experimental kinetic data for a mixture onto a planar surfaces under flow conditions.
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