| 초록 |
The synthesis of poly(acrylic acid-b-N-vinyl amine) copolymers using a combination of two living radical polymerization techniques, activator regenerated by electron transfer atom-transfer radical polymerization(ARGET ATRP) and reversible addition-fragmentation chain transfer(RAFT) polymerization, is reported. The use of two methods is due to the disparity in reactivity of the two monomers, tert-butyl acrylate(tBA) and N-vinyl formamide(NVF). ATRP of NVF is known to be not effective in preparing polymers with controlled architectures. In addition, RAFT agents that can control the polymerization of NVF typically do not provide enough control in the polymerization of tBA. Thus, ARGET ATRP was performed to make poly(tert-butyl acrylate) containing a bromine end groups which was subsequently substituted with xanthate moieties for the RAFT of NVF. With subsequent hydrolysis, we could synthesize amphoteric block copolymers of poly(acrylic acid-b-N-vinyl amine). |
