Tailoring Physical Aging in Super Glassy Polymers with Functionalized Porous Aromatic Frameworks for CO2 Capture
CH Lau, K Konstas, CM Doherty, S Kanehashi, B Ozcelik, SE Kentish, AJ Hill, MR Hill
Chemistry of Materials | American Chemical Society | Published : 2015
A series of chemically functionalized porous aromatic frameworks (PAFs) have been synthesized and deployed within mixed-matrix membranes for gas separation. This series of PAFs delivered for the first time simultaneous control of selective gas transport and physical aging within the membranes. New composites including native and metalated fullerenes were also prepared, and the composites exhibited exceptional increases in their porosity, which in turn resulted in ultrafast gas transport. CO2 permeability following PAF-1-Li6C60 infusion within poly(trimethylsilylpropyne) was as high as 50 600 Barrer, a 70% improvement. Remarkably, just 9% of this permeation rate diminished after 1 year of phy..View full abstract
This work was supported by the Science and Industry Endowment Fund (SIEF). M.R.H. acknowledges FT1300345.