Block copolymer-based CO2 separation membranes: synthesis, microstructures and recent progress

: Block copolymers (BCPs) have emerged as a fascinating tool within the realm of gas separation membranes, primarily for their remarkable ability to self-assemble into well-defined microstructures. This unique characteristic enables them to achieve an excellent balance between gas separation performance and mechanical strength. This review delves deeply into the methods of synthesizing BCPs and their self-assembly mechanisms in solution, alongside recent advancements in their application to gas separation membranes. Emphasis is placed on summarizing and discussing how neat BCP membranes and hybrid membranes optimize the CO 2 separation performance through the transition of their microstructures. Lastly, the review outlines the remaining obstacles and potential advancements in the development of BCP-based membranes for gas separation and CO 2 capture applications.