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Fabrication and characterization of PEI/PVP‐based carbon hollow fiber membranes for CO 2 /CH 4 and CO 2 /N 2 separation
Author(s) -
Salleh Wan Norharyati Wan,
Ismail Ahmad Fauzi
Publication year - 2012
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.13711
Subject(s) - polyetherimide , permeation , membrane , polyvinylpyrrolidone , differential scanning calorimetry , chemical engineering , thermogravimetric analysis , polymer , materials science , polymer chemistry , gas separation , carbonization , carbon fibers , fiber , analytical chemistry (journal) , chemistry , organic chemistry , scanning electron microscope , composite material , biochemistry , physics , composite number , engineering , thermodynamics
Carbon hollow fiber membranes derived from polymer blend of polyetherimide and polyvinylpyrrolidone (PVP) were extensively prepared through stabilization under air atmosphere followed by carbonization under N 2 atmosphere. The effects of the PVP compositions on the thermal behavior, structure, and gas permeation properties were investigated thoroughly by means of differential scanning calorimetry, thermogravimetric analysis, X‐ray diffraction, and pure gas permeation apparatus. The experimental results indicate that the transport mechanism of small gas molecules of N 2 , CO 2 , and CH 4 is dominated by the molecular sieving effect. The gas permeation properties of the prepared carbon membranes have a strong dependency on PVP composition. The carbon membranes prepared from polymer blends with 6 wt % PVP demonstrated the highest CO 2 /CH 4 and CO 2 /N 2 selectivities of 55.33 and 41.50, respectively. © 2011 American Institute of Chemical Engineers AIChE J, 58: 3167–3175, 2012