Poly(ether-<i>block</i>-amide) Copolymer Membranes in CO₂ Separation Applications

Poly(ether-block-amide) (PEBA, commercialized as Pebax) copolymer membranes show a highly promising platform for preparing high-performance CO2 capture from process streams containing CH4 and N2. Pebax combines high affinity with the desired mechanical strength polymeric thanks to its flexible polyether segment hard polyamide block, respectively. Furthermore, researchers have been improving performance of these by thin selective layer on top porous supports incorporating inorganic organic nanofillers into matrix overcome permeance-selectivity limit. The chemical structural characteristics according different fabrication techniques parameters are discussed first. Then, recent developments in terms both Pebax-based film composite mixed summarized. Finally, thermal water stabilities addressed.