화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터)
권호 37권 2호
발표분야 고분자합성
제목 N-Heterocyclic Carbene Mediated Zwitterionic Polymerization for Cyclic Polymers
초록 Zwitterionic polymerization involves a propagating species with both positively and negatively charged groups. Previous investigations on zwitterionic polymerization concern alternating copolymerization of nucleophilic and electrophilic monomers and polymerization of isolated stable zwitterionic monomers. More recently, the ring-opening polymerization of cyclic monomers using nucleophilic initiators have been studied. Specifically, the zwitterionic polymerization of cyclic esters using N-heterocyclic carbene (NHCs) is the focus of this work. The NHC mediated zwitterionic polymerization of cyclic monomers provides an expedient route to polymers of various architectures such as cyclic polymers, cyclic gradient copolymers and linear telechelic polymers. In this work, the polymerization kinetics of lactide initiated by NHCs and a simple copolymerization protocol to produce cyclic gradient copolymers using the reactivity difference of the monomers towards NHCs are discussed.
저자 신은지
소속 LG화학기술(연)
키워드 N-heterocyclic carbene; zwitterionic polymerization; cyclic polymers
E-Mail shin.eunji@gmail.com