Improving O2/N2 Selective Filtration Using Carbon Nanotube‐Modified Mixed‐Matrix Membranes. Issue 11 (2nd October 2015)

• Record Type: Journal Article
• Authors: Zeinali, Sedigheh; Aryaeinezhad, Mohammad
• Is Part Of: Chemical engineering & technology. Volume 38:Issue 11(2015:Nov.)
• Page Start: 2079
• Page End: 2086
• Publication Date: 2015-10-02
• Subjects: Gas selectivity -- Gas separation -- Mixed‐matrix membrane -- Multi‐walled carbon nanotubes; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201400538
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: A modified mixed‐matrix membrane (MMM) was designed in order to improve O2 /N2 selective filtration. The fabricated MMM consist of purified and functionalized multi‐walled carbon nanotubes (MWCNT) and polyethersulfone. Characterization of the prepared membranes and the functionalized MWCNT was done by scanning electron microscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis methods. The permeabilities and selectivities of the membranes were improved using modified MWCNT as MMM filler. The effects of the solvent, the carbon nanotube types and dosage, the polymer dosage, the casting method, and the applied pressure in both the membrane fabrication and gas separation processes were investigated. Abstract : Mixed‐matrix membranes consisting of purified/functionalized multi‐walled carbon nanotubes and polyethersulfone were designed to achieve O2 /N2 selective filtration. The effects of solvent, carbon nanotube type, polymer dosage, casting method, and applied pressure on the membrane performance were investigated. Spin coating was found to be the best casting method for membrane fabrication.