TY - JOUR
T1 - Tailoring Physical Aging in Super Glassy Polymers with Functionalized Porous Aromatic Frameworks for CO2 Capture
AU - Lau, Cher Hon
AU - Konstas, Kristina
AU - Doherty, Cara
AU - Kanehashi, Shinji
AU - Kanehashi, Shinji
AU - Ozcelik, Berkay
AU - Kentish, Sandra
AU - Kentish, Sandra
AU - Hill, Anita
AU - Hill, Matthew
PY - 2015/7/14
Y1 - 2015/7/14
N2 - 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 physical aging, compared to 74% in the native polymer. A series of characterization techniques revealed this phenomenon to be due to intercalation of polymer chains within the PAF pores, the strength of which is controlled by the levels of chemical functionalization and porosity. The membranes were exploited for gas separations, in particular the stripping of CO2 from natural gas.
AB - 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 physical aging, compared to 74% in the native polymer. A series of characterization techniques revealed this phenomenon to be due to intercalation of polymer chains within the PAF pores, the strength of which is controlled by the levels of chemical functionalization and porosity. The membranes were exploited for gas separations, in particular the stripping of CO2 from natural gas.
UR - http://www.scopus.com/inward/record.url?scp=84937064545&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.5b01537
DO - 10.1021/acs.chemmater.5b01537
M3 - Article
AN - SCOPUS:84937064545
SN - 0897-4756
VL - 27
SP - 4756
EP - 4762
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 13
ER -