(376f) Ultra-Permeable Polyimide/MOFs Hybrid Membranes for Gas Separations
AIChE Annual Meeting
2018
2018 AIChE Annual Meeting
Separations Division
Poster Session: Separations Division
Tuesday, October 30, 2018 - 3:30pm to 5:00pm
This work aims to tackle the aforementioned challenges and develop ultra-permeable MMMs via functionalizing polymer chains and nanocrystals in the membrane matrix. Metal Organic Frameworks (MOFs), a new family of porous nanocrystals, possess precisely controlled pore sizes close to the molecular dimensions of gas molecules, which enables specific size-sieving amongst similarly-sized gases and synergistic enhancements of performance from both phases. MOFs are tailored with hydrophilic components, such as amino (-NH2) groups, intensively interacting with specially designed pending moieties in the polyimide to foster a firm interphase adhesion. Through insightful molecular design and microstructural engineering, such hybrid membranes mitigate the interfacial delamination and percolation limitation challenges in MMMs effectively. More importantly, the synthetic membranes demonstrate gas separation performance (such as CO2/CH4 and H2/CH4 gas pairs) surpassing the current upper bound considerably.
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