SURFACE-PROPERTIES OF COPOLYMERS AND TERPOLYMERS OF STYRENE AS STUDIED BY INVERSE GAS-CHROMATOGRAPHY

Inverse gas chromatography has been used for the determination of the glass transition temperatures of amorphous polymers and the thermodyna mic functions for adsorption of n-alkanes (C-7 to C-10), n-butanol, di -n-butyl ether and 1,4-dioxane in the Henry region onto the surface of polystyrene, styrene-nonyl methacrylate (4:1) copolymer, and styrene- maleic anhydride-methacrylic acid (1:1:1) and styrene-nonyl methacryla te (4:1) with 2 wt% p-phthalimidinoxymethacrylic acid terpolymers. The data were compared with the thermodynamic functions of test solutes i n polymer solution at infinite dilution. The influence of modification of polymer structure on the ability of polymer functional groups to i nteract with non-polar, donor or acceptor molecules of sorbates or sol vents has been established.