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Improving O 2 /N 2 Selective Filtration Using Carbon Nanotube‐Modified Mixed‐Matrix Membranes
Author(s) -
Zeinali Sedigheh,
Aryaeinezhad Mohammad
Publication year - 2015
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201400538
Subject(s) - carbon nanotube , thermogravimetric analysis , membrane , materials science , fourier transform infrared spectroscopy , chemical engineering , scanning electron microscope , filtration (mathematics) , polymer , casting , solvent , matrix (chemical analysis) , polymer chemistry , composite material , organic chemistry , chemistry , biochemistry , statistics , mathematics , engineering
A modified mixed‐matrix membrane (MMM) was designed in order to improve O 2 /N 2 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.