Abstract
Polymeric membranes for gas separation have application in a wide range of industries such as natural gas sweetening and air enrichment. Recently, high-performance gas separation polymeric membranes have been developed based on a novel thermal rearrangement process that produces the resistant poly(benzoxazole) (TR-PBO). This review reports on the current state of the art TR-PBO membranes for gas separation and the underlying chemistry needed to achieve such high separation performance. Particular focus is applied to copolymers based on TR-PBO for membranes as these have attracted considerable research interest recently for their gas separation performance and superior mechanical properties compared with TR-PBO. Also included in this review is a discussion of the future directions of research on TR-PBO-based membranes for gas separation.
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