| 초록 |
A novel porous polymer (denoted as PBP) was synthesized via Friedel-Crafts alkylation. Subsequently, post-synthetic functionalization with the use of sulfonic and amine groups was performed on PBP to improve the overall CO2 adsorption. These developed porous materials were incorporated into in-house polyimide to obtain mixed-matrix membranes (MMMs) for CO2/N2 separation process. It was observed that the incorporation of these functional groups was feasible to improve CO2 adsorption due to the presence of strong interaction between CO2 and the selected functional groups. Gas permeation results of the MMMs demonstrated that CO2 separation performance can be improved substantially with the incorporation of porous fillers. On the other hand, functionalized porous fillers were feasible to tune CO2/N2 separation performance towards a favorable direction. In particular, PBP-menm yielded the greatest gas separation performance among all selected porous fillers, resulting in an excellent performance beyond the Robeson upper bound limit for CO2/N2 separation. |
