TY - JOUR
T1 - Hybrid Polymer/MOF membranes for Organic Solvent Nanofiltration (OSN): Chemical Modification and the Quest for Perfection
AU - Burgal , Joao Da Silvao
A2 - Campbell, James
A2 - Szekely, Gyorgy
A2 - Davies, R P
A2 - Braddock, Christopher
A2 - Livingston, Andrew
PY - 2016/4/1
Y1 - 2016/4/1
N2 - One of the main challenges in the field of Organic Solvent Nanofiltration (OSN) is to improve the selectivity of membranes, allowing the separation of closely related solutes. This objective might be achieved by constructing membranes with uniform porous structures. Hybrid Polymer/Metal Organic Framework (MOF) membranes were prepared by in-situ growth (ISG) of HKUST-1 within the pores of polyimide membranes. To improve the performances of ISG membranes, chemical modification was performed. Aryl carboxylic acid moieties were introduced to polyimide P84 ultrafiltration membranes allowing coordination of the HKUST-1 directly on to the polymer. Chemically modified ISG membranes outperformed non-modified ISG membranes in both solute retentions and permeance. Retentions of polystyrene solute in acetone were used to calculate theoretical pore size distributions for each of the membranes tested. It was found that the chemically modified ISG membrane had he narrowest calculated pore size distribution.
AB - One of the main challenges in the field of Organic Solvent Nanofiltration (OSN) is to improve the selectivity of membranes, allowing the separation of closely related solutes. This objective might be achieved by constructing membranes with uniform porous structures. Hybrid Polymer/Metal Organic Framework (MOF) membranes were prepared by in-situ growth (ISG) of HKUST-1 within the pores of polyimide membranes. To improve the performances of ISG membranes, chemical modification was performed. Aryl carboxylic acid moieties were introduced to polyimide P84 ultrafiltration membranes allowing coordination of the HKUST-1 directly on to the polymer. Chemically modified ISG membranes outperformed non-modified ISG membranes in both solute retentions and permeance. Retentions of polystyrene solute in acetone were used to calculate theoretical pore size distributions for each of the membranes tested. It was found that the chemically modified ISG membrane had he narrowest calculated pore size distribution.
U2 - 10.1016/j.memsci.2016.01.024
DO - 10.1016/j.memsci.2016.01.024
M3 - Article
SN - 0376-7388
VL - 503
SP - 166
EP - 176
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -