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박병주,이재훈,김나운,김종학 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
In this paper, we reported high-performance, dual-phase, all-polymeric membranes that exhibit improved CO<sub>2</sub> permeability and CO<sub>2</sub>/N<sub>2</sub> selectivity at the same time. The membranes are fabricated by using the graft copolymer composed of (2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl] ethyl methacrylate)-graft-poly(oxyethylene methacrylate) (PBE) and a poly(amide-b-ether) block copolymer (Pebax). The interconnected CO<sub>2</sub>-philic network channels within the matrix was formed due to the selective interaction between the amphiphilic PBE Filler and Pebax. The microphase-separated morphology were confirmed using TEM, DSC, XRD, TGA, and UTM. The CO<sub>2</sub> and N<sub>2</sub> permeabilities increased as the PBE content increase, and best performance was observed at a PBE content of 5 wt%. It result from increased CO<sub>2</sub> solubility owing to the efficient clustering of CO<sub>2</sub>-philic groups. The dual phase membrane exhibits a CO<sub>2</sub>/N<sub>2</sub> separation performance with a CO<sub>2</sub> permeability of 175.3 Barrer and a CO<sub>2</sub>/N<sub>2</sub> selectivity of 48.2.
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