Macromolecular Design of Synthetic Polymer for Optical Resolution Membrane

Abstract

Several new polymers for optical resolution membranes were synthesized and enantioselective permeabilities of the polymer membranes were examined for various racemates using four methods, that is, concentration-driven permeatiom (CP), pressure-driven permeation (Δ P), pervaporation (PV), and evapomeation (EV). (+) -Poly (1- (dimethyl (10-pinanyl) silyl) -1-propyne) ((+) -poly (DPSP)) membranes showed high enantioselective permeabilities in CP for various racemates and low permeation rates, which were improved by using PV or EV. (-) -Poly (2- (dimethyl (10-pinanyl) silyl) norbornadiene) had a higher permeability than (+) -poly (DPSP). High and stable enantioselective permeations were observed through the graft copolymers with (-) -oligo (methyl (10-pinanyl) siloxane) as the grafts. Polymers having a chiral main chain showed enentioselective permeability