The development of high-performance membranes is of pivotal importance for practical gas separations. However, it is challenging to prepare defect-free thin membranes. In this study, high-performance composite membranes were prepared based on a thin mixed matrix membrane (MMM) selective layer composed of a poly(vinyl chloride)-poly(oxyethylene methacrylate) (PVC-POEM) graft copolymer and ZIF-8 nanoparticles on a macroporous alumina support, via a spin coating technique. The high CO2 affinity of PVC-POEM with its amphiphilic microphase-separated structure, and the high gas diffusivity of ZIF-8 with its unique porosity and large surface area, enabled the membrane to facilitate gas separation effectively, leading to high permeance and selectivity.
Bibliographical noteFunding Information:
This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (Grant NRF-2016R1A2B4014805) and the Engineering Research Center of Excellence Program of the Korea Ministry of Science, ICT & Future Planning (MSIP)/National Research Foundation of Korea (NRF) (Grant NRF-2014R1A5A1009799).
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)