Effects of bulky substituents on oxygen permeation behaviors of polystyrene-based polymers


  • Dedicated to Prof. C. G. Overberger on his 65th birthday.


Polymers of β-cyclodextrinyl substituted styrene and 4′-oligodimethylsiloxanyl-4-vinyldiphenyl were synthesized. Their oxygen perm selectivity was studied from the viewpoint of investigating the effects of the introduction of bulky p-substituents to polystyrene on their permeation behaviors. The bulky substituents were quite effective in enhancing the permeability; however, the selectivity in permeation decreased with the increase in permeability.