| 초록 |
Gas molecules can diffuse into a dense film and such gas diffusion channel is called thermodynamic pores, which can be controlled by chemical processes. In particular, separation features can be influenced by such thermodynamic pores in dense membranes. Therefore, a proper engineering of thermodynamic pores is the core of research, which guides how to design membrane materials. In line with these efforts, chemical method is a widely used protocol to switch chemicals, to add crosslinkers or to conduct thermal treatments. For this reason, fluorinated polyimides (fPIs) have been mostly studied as a gas separation material due to their easy tuning properties. On the other hand, a physical approach is rarely investigated to tune thermodynamic pores in fPI membranes, even though various synthetic ways exist for fPI synthesis. In this work, we investigate the relation the physical features with gas transport behaviors by using synthesis of different ways with identical chemical structures. |
