| 초록 |
Ionic liquid has unique properties such as negligible vapor pressure, high ion conductivity, and chemical stability. The mixture of block copolymer and ionic liquid can make periodic nanostructure incorporated with self-assembly of block copolymer. Here, we studied phase behaviors of PS-b-P2VP (polystyrene-block-poly-2-vinylpyridine copolymer)/ionic liquid mixture with ionic liquid amount. We selected two different ionic liquids, [EMIM][TFIS] and [HMIM][TFSI] to find the effect of number of alkyl chains on the phase behaviors of PS-b-P2VP. The overall volume fraction of ILs was varied and nanostructures of each mixtures and thermal stability of the structures were measured by small angle neutron and x-ray scattering. The distributions of ionic liquid in block copolymer were confirmed with contrast variation of block copolymer/IL mixtures by small angle neutron scattering. |
