Oxygen Permselectivities of Novel Multi-bridged Copolymers Synthesized by Imine Metathesis between N-Imines and C-Imines in the Pendant Groups of Two Poly(substituted acetylene)s

Abstract

New types of multi-bridged copolymers were designed and examined as oxygen permselective membrane materials. The multi-bridged copolymers were synthesized by imine metathesis reactions between N-imine (synthetic equivalent of amine)-containing poly(substituted acetylene)s and C-imine (synthetic equivalent of aldehyde)-containing poly(substituted acetylene)s in the membrane state. The resulting copolymers maintained good self-membrane forming ability. The introduction of multibridge structures enhanced both oxygen permselectivities and oxygen permeabilities simultaneously.