Comparative assessment of hydrocarbon separation performance of bulky poly(urethane-urea)s toward rubbery membranes
| Autor: | Morteza Sadeghi, Mohammad Dinari, Afsaneh Fakhar, Rob G.H. Lammertink |
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| Přispěvatelé: | MESA+ Institute, Soft matter, Fluidics and Interfaces |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
chemistry.chemical_classification
Hydrocarbon separation Phase separation Energy Engineering and Power Technology Polyurethane membranes Permeation Geotechnical Engineering and Engineering Geology chemistry.chemical_compound Fuel Technology Hydrocarbon Membrane chemistry Chemical engineering Propane Side chain Gas separation Aliphatic side chains Glass transition Selectivity Aromatic side chains |
| Zdroj: | Journal of Natural Gas Science and Engineering, 98:104356. Elsevier |
| ISSN: | 1875-5100 |
| Popis: | In the present study, two seriess of poly (urethane urea)s (PUUs) membranes containing aromatic and aliphatic side chains with different sizes were used for separation of higher hydrocarbons from methane. Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetery (DSC), fractional free volume (FFV) estimation, and gas permeation measurements (CH4, C2H6, C3H8) were done to characterize the membranes. Bulkier or longer side chains in aromatic and aliphatic substituted PUUs provided enhanced phase separation, lower glass transition temperature and higher gas permeability. Fractional free volume (FFV) as a significant factor controlling gas separation had a reverse trend in both series by increasing the size of side chains. The main findings confirmed the capability of higher phase separated PUUs for hydrocarbon separation. The highest permeability and selectivity was obtained by the longest side chain based PUU with propane permeability of 186 barrer and propane/methane selectivity of 6.51. |
| Databáze: | OpenAIRE |
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