Polyurethane-Silica Nanocomposite Membranes for Separation of Propane/Methane and Ethane/Methane
| Autor: | Morteza Sadeghi, Mohammad Mehdi Talakesh, Afsaneh Khosravi, Hadi Zare Banadkohi |
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| Rok vydání: | 2014 |
| Předmět: |
Thermogravimetric analysis
Materials science General Chemical Engineering General Chemistry Industrial and Manufacturing Engineering Polyester chemistry.chemical_compound Differential scanning calorimetry Polypropylene glycol Membrane chemistry Chemical engineering Polycaprolactone Polymer chemistry Fourier transform infrared spectroscopy Polyurethane |
| Zdroj: | Industrial & Engineering Chemistry Research. 53:2011-2021 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/ie403322w |
| Popis: | This study examines the role that silica nanoparticles play on the permeation of methane, ethane, and propane gases through two types of polyurethane (PU) membranes: one based on polyether and the other based on polyester. These PU membranes are synthesized from polycaprolactone (PCL225) polyester and polypropylene glycol (PPG) polyether in a 1–3–2 mol ratio of polyol/hexamethylenediisocyanate/1,4-butane diol. The prepared PU-silica membranes are characterized using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and wide-angle X-ray diffraction (WAXD) analyses. The characterization analyses confirmed the nanoscale distribution of silica particles within the polymer matrix. Permeation experiments reveal that in polyether-based PU, permeability first increases by increasing silica content up to 2.5%, and then decreases. The permeability of gases in polyester-based PU constantly decreases by increa... |
| Databáze: | OpenAIRE |
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