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Selective Guest Uptake from Solvent Mixtures in the Clathrate Phase of Syndiotactic Polystyrene
Author(s) -
Uda Yukihiro,
Kaneko Fumitoshi,
Kawaguchi Tatsuya
Publication year - 2004
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200400328
Subject(s) - decane , sorption , polystyrene , chloroform , solvent , hexane , tacticity , materials science , phase (matter) , chemistry , polymer chemistry , chemical engineering , organic chemistry , polymer , adsorption , engineering , polymerization
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).