Abstract
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.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 166-176 |
| Number of pages | 11 |
| Journal | Journal of Membrane Science |
| Volume | 503 |
| DOIs | |
| State | Published - Apr 1 2016 |
| Externally published | Yes |
Keywords
- Chemical modification
- Hybrid membranes
- Metal Organic Frameworks
- Modelling
- Organic Solvent Nanofiltration
ASJC Scopus subject areas
- Biochemistry
- General Materials Science
- Physical and Theoretical Chemistry
- Filtration and Separation