| 초록 |
Poly(vinyl alcohol) (PVA) is industrially valuable polymer because of its many desirable characteristics for various applications. It is made by hydrolysis of poly(vinyl acetate). Especially, syndiotactic PVA, whose mechanical and physical properties are much superior to those of atactic ones, has received considerable attention. However, it is very difficult to control of stereospecificity in radical polymerizations because of its low energy barrier between two enantiomers. Fluoroalcohol is known to be efficient to control of its stereospecificity by a steric repulsion. Reversible addition fragmentation chain transfer polymerization (RAFT) is remarkable method for controlled architecture of polymer. In this work, we synthesied PVA using RAFT process in fluoroalcohol and realized the simultaneous control of molecular weight and stereospecificity. |
