Turning Microstructure in Block Copolymer Membranes: A Facile Strategy to Improve CO₂ Separation Performance.

ABSTRACT: To mitigate global climate change, the development of membranes with high CO₂ permeability and selectivity is urgently needed. Here, a simple and effective non-solvent-induced microstructure rearrangement (MSR) technique is proposed to enhance the gas separation performance of Pebax 2533 membranes. By immersing Pebax 2533 membranes in amino acid salt solutions to induce MSR, the CO₂ permeability of the optimized Pebax 2533-GlyK 10 wt.% membrane reached 1180 Barrer, a 4.5-fold increase compared to the original membrane, without compromising CO₂/N₂ selectivity. Moreover, the MSR membrane maintains stable gas separation performance for nearly 500 days, demonstrating excellent long-term stability. Furthermore, applying the MSR technique to thin-film

SUBMITTER: Wei J 

PROVIDER: S-EPMC12224946 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature