Ensinger, Wolfgang ; Sudowe, R. ; Brandt, R. ; Neumann, R. (2010)
Gas separation in nanoporous membranes formed by etching ion irradiated polymer foils.
In: Radiation Physics and Chemistry, 79 (3)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Polymer membranes with pores with radii in the range of several 10-100 nm were formed by irradiating polyimide foil with highly energetic heavy ions and etching the latent ion tracks with hypochlorite. The aerial density of the pores could be chosen up to an upper limit of 108 pores cm-2, at which too many pores start to overlap. The straight cylindrical pores were tested for their gas permeation and gas separation performance. With a gas mixture of CO and CO2 as model system, gas chromatographic measurements showed that CO penetrates faster through the membrane than CO2, leading to gas separation. This is possible because the mean free path of the molecules is in the order of the pore radius, which is in the transition flow region close to molecular flow conditions.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2010 |
| Autor(en): | Ensinger, Wolfgang ; Sudowe, R. ; Brandt, R. ; Neumann, R. |
| Art des Eintrags: | Bibliographie |
| Titel: | Gas separation in nanoporous membranes formed by etching ion irradiated polymer foils |
| Sprache: | Englisch |
| Publikationsjahr: | März 2010 |
| Verlag: | Elsevier Science Publishing Company |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Radiation Physics and Chemistry |
| Jahrgang/Volume einer Zeitschrift: | 79 |
| (Heft-)Nummer: | 3 |
| URL / URN: | http://www.sciencedirect.com/science/article/B6TVT-4X3W44J-3... |
| Kurzbeschreibung (Abstract): | Polymer membranes with pores with radii in the range of several 10-100 nm were formed by irradiating polyimide foil with highly energetic heavy ions and etching the latent ion tracks with hypochlorite. The aerial density of the pores could be chosen up to an upper limit of 108 pores cm-2, at which too many pores start to overlap. The straight cylindrical pores were tested for their gas permeation and gas separation performance. With a gas mixture of CO and CO2 as model system, gas chromatographic measurements showed that CO penetrates faster through the membrane than CO2, leading to gas separation. This is possible because the mean free path of the molecules is in the order of the pore radius, which is in the transition flow region close to molecular flow conditions. |
| Freie Schlagworte: | Ion track membranes; Nanopores; Gas separation |
| Zusätzliche Informationen: | IONIZING RADIATION AND POLYMERS Proceedings of the 8th International Symposium on Ionizing Radiation and Polymers Angra dos Reis, Rio de Janeiro, Brazil, 12-17 October 2008 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 03 Feb 2010 13:10 |
| Letzte Änderung: | 05 Mär 2013 09:30 |
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