The changes in the molecular mass distribution (MMD) for the investigated polymer as a result of adsorption from binary and ternary solutions have been studied by exclusion chromatography. It is found that the affinity of polymer components to the surface has the crucial influence on the changes in MMD of polymers. The diminishing of polydispersity in solutions after adsorption was observed for both investigated polymers. In the case of the polar polymer of poly(butylmethacrylate), the diminishing of polydispersity is caused mainly by the preferential adsorption of low-molecular-mass fractions. Whereas, in the case of non-polar polymer polystyrene, it is caused by the transition of high-molecular-mass fractions onto the adsorbent surface. The analysis of experimental results indicates that the quantity of adsorbent affects the composition of the adsorption layer formed by the polymers of different chemical nature.

• Дударенко Галина Володимирівна (хімічні науки)

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