Enhanced Gas Transport Performance of Polyamide Membranes by Postpolymerization Modification
| Autor: | Maria Ortencia González-Díaz, Manuel Aguilar-Vega, Mikhail G. Zolotukhin, Humberto Vázquez-Torres, Rita Sulub-Sulub, Wilberth Herrera-Kao |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
General Chemical Engineering Plasticizer 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Membrane Chemical engineering Permeability (electromagnetism) Polyamide Gas separation 0210 nano-technology Selectivity Pendant group Thermostability |
| Zdroj: | Industrial & Engineering Chemistry Research. 57:8989-8996 |
| ISSN: | 1520-5045 0888-5885 |
| Popis: | A novel series of aromatic polyamides was synthesized by postpolymerization modification using a simple strategy to introduce different bulky pendant groups into a precursor polymer. The polyamides possess high thermostability with Tg values in the range of 298–312 °C and good mechanical properties. These polyamide membranes also exhibit enhanced gas separation performance, especially for CO2 and H2 separations, with plasticization resistance in the range tested (2.02–10.13 bar). The most remarkable result for gas permeability is attained with P3 bearing 4-tert-butylbenzoyl (TBB) as pendant group (PCO2 = 88.1, PH2 = 101 with selectivity (α) for CO2/CH4 = 19.2 and H2/N2 = 21.5). The highest permselectivity is obtained for P2 containing p-toluoyl (p-T) as pendant group (CO2/CH4 = 26.1 and H2/CH4 = 38.1). |
| Databáze: | OpenAIRE |
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