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Large area Cl irradiated PET membranes for hydrogen separation |
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| Authors: | Kamlendra Awasthi M StammVolker Abetz YK Vijay |
| Affiliation: | a Department of Nanostructured Materials, Leibniz Institute of Polymer Research Dresden, 01069 Dresden, Germany b DST Unit on Nanosciences, Department of Chemical Engineering, Indian Institute of Technology, Kanpur 208016, India c Centre for Membranes and Structured Materials, Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Geesthacht 21502, Germany d Department of Physics, University of Rajasthan, Jaipur 302055, India |
| Abstract: | In the present case, Polyethylene terephthalate (PET) membranes of thickness 25 μm were irradiated by 100 MeV Cl9+ ion beam with ion fluence of 107 ions/cm2. These membranes were etched in 6N NaOH at 60 °C at different etching times to generate pores. The permeabilities of nitrogen, oxygen, methane, carbon dioxide as well as hydrogen were measured for etched membranes at various etching times. The permeability of gases was found to increase with etching time and a rapid increase was noticed after a critical etching time when the etched tracks meet at their vertexes. The selectivity of hydrogen gas over other gases was also observed. |
| Keywords: | Track etched membrane Ion irradiation Chemical etching Gas permeability |
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