Selective Guest Uptake from Solvent Mixtures in the Clathrate Phase of Syndiotactic Polystyrene

Abstract

Abstract Summary: Selective absorption uptake during the guest‐exchange processes in the δ form of syndiotactic polystyrene (sPS) was confirmed by IR spectroscopy. When films of the δ form were immersed in hexane/decane or chloroform/decane mixtures, decane molecules were incorporated preferentially in the δ form. Sorbate uptake by the δ form was greatly accelerated when the sorbate was mixed with a solvent penetrable to the amorphous region of sPS. Concentration changes in a δ ‐form film during sorption processes: sorption of a chloroform(D)/decane(H) mixture (1:1 molar ratio). magnified image Concentration changes in a δ ‐form film during sorption processes: sorption of a chloroform(D)/decane(H) mixture (1:1 molar ratio).