| 초록 |
Polymer membranes often display trade-off effects between permeation flux and separation factor in pervaporation and exploring the strategies for breaking the effects is crucial. In that point MOF is promising material because of water channel but it is not enough to show the anti trade-off effect. So in this study, UIO-66 with different size and defect density was induced. Two different UiO-66 nanoparticles were synthesized and blended into PVA matrix to fabricate water-selective membrane for isopropyl alcohol (IPA) dehydration via PV technology. Membrane with UiO-66 Small size, has higher defect density compared to Large, can be achieved the strong interaction with water lead to good dispersion and enhanced the water sorption and diffusion property enough to show the anti trade-off effect. In the IPA/Water feed system, UIO-66 S 2% loading membrane increase the flux 11.6%, separation factor 22.8% compared to neat PVA membrane. |
