| 초록 |
Vinyl addition polymers of substituted norbornenes (NBs) possess attractive properties such as high glass transition temperatures and excellent mechanical and film-forming properties; however, the synthesis of such polymers with controlled architecture and monomer sequence distribution has been elusive until recently, due to the lack of applicable living polymerization chemistry. We have recently synthesized block and random copolymers of NBs having hydroxyhexafluoroisopropyl and n-butyl moieties via living vinyl addition polymerization with a Pd catalyst. Both series of polymers were cast into the selective layers of thin film composite membranes, and these membranes investigated for the recovery of n-butanol from dilute aqueous solution via pervaporation. Both block and random copolymers are effective as n-butanol pervaporation membranes, with the block copolymers exhibiting a better flux-selectivity balance. The detailed synthesis and performance will be given at the meeting. |
