Revealing the morphological influence of doping ionic liquid to cyclic carbonate-based block copolymers
발표자
()
초록
내용
Cyclic carbonate-based block copolymers have the potential to be used as solid electrolytes in Li-ion batteries due to their high polarity and affinity towards ionic groups. However, the intrinsically high glass transition temperature and the brittleness of the polymer hinder its application. In this study, we investigate the doping of cyclic carbonate-based block copolymers with ionic liquids (ILs) as an effective strategy to overcome the presented disadvantages. We synthesize poly(glycerol carbonate methacrylate)-b-poly(n-butyl methacrylate) diblock copolymers by reversible addition-fragmentation chain-transfer (RAFT) polymerization. The block copolymers are then doped with either BMIMTFSI or BMIMPF6 to achieve bulk samples with different IL contents. We present the changes in the microdomain morphology of the IL-doped block copolymers and explain the observed changes in terms of the influences of IL addition to block copolymer segregation strength and volume composition.