The role of free volume, hydrogen bonds, and crosslinks on physical aging in polymers of intrinsic microporosity (PIMs)
Taigyu Joo, Katherine Mizrahi Rodriguez, Hyun‐Hee Lee, Durga Acharya, Cara M. Doherty, Zachary P. Smith
Abstract
Physical aging rates strongly correlate with the initial free volume of microporous polymers. Introducing hydrogen bonds and crosslinks can reduce the initial free volume and significantly impact gas separation selectivity over time.
Topics & Concepts
Microporous materialVolume (thermodynamics)PolymerHydrogen bondMaterials scienceHydrogenChemical engineeringSelectivityPolymer chemistryPolymer scienceComposite materialChemistryThermodynamicsMoleculeOrganic chemistryCatalysisPhysicsEngineeringMembrane Separation and Gas TransportCovalent Organic Framework ApplicationsMetal-Organic Frameworks: Synthesis and Applications