In the electronic device area, several conductive polymers have been used such as Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT-PSS). In the connection of this concept, PEDOT-PSS was applied to CO2/N2 separation, which is the first attempt to this area. To be specific, the polymer was blended to poly(2-[3-(2H- benzotriazol-2- yl)-4-hydroxyphenyl] ethyl methacrylate)-poly(oxyethylene methacrylate) (PBEM-POEM or PBE). The conductive polymer formed the interconnected network by interacting with PBE owing to the specific interaction. This structure give the facile pathway to CO2 and N2, which result in the increased permeability of the gases. Especially, improved CO2 solubility caused the permeability (59.6 Barrer) to be increased, which brought about the enhanced CO2/N2 selectivity (77.4) of PEDOT-PSS 5 wt% membrane.

• 박민수(연세대학교 화공생명공학과, Department of Chemical and Biomolecular Engineering, Yonsei University) | Min Su Park
• 정정표(연세대학교 화공생명공학과, Department of Chemical and Biomolecular Engineering, Yonsei University) | Jung Pyo Jung
• 김진규(연세대학교 화공생명공학과, Department of Chemical and Biomolecular Engineering, Yonsei University) | Jin Kyu Kim
• 김종학(연세대학교 화공생명공학과, Department of Chemical and Biomolecular Engineering, Yonsei University) | Jong Hak Kim