شماره ركورد كنفرانس :
5048
عنوان مقاله :
Effect of non-solvent additives and volatile solvent on the performance of polysulfone flat sheet gas separation membranes
Author/Authors :
M. A ،Aroon School of Chemical Engineering - College of Engineering - University of Tehran - Tehran, Iran , A. F ،Ismail Faculty of Chemical and Natural Resources Engineering - University Teknology Malaysia - Johor, Malaysia , M. M ،Montazer-Rahmati School of Chemical Engineering - College of Engineering - University of Tehran - Tehran, Iran , T ،Matsuura Faculty of Chemical and Natural Resources Engineering - University Teknology Malaysia - Johor, Malaysia
كليدواژه :
flat sheet membrane , phase inversion , gas separation , additives
عنوان كنفرانس :
ششمين كنگره بين المللي مهندسي شيمي
چكيده لاتين :
The effects of non solvent additves, polymeric additives, polymer concentration and volatile solvent on the performance
of polysulfone flat sheet gas separation membranes have been investigated. Flat sheet membranes were fabricated by
the phase inversion technique and characterized by gas permeation tests using pure carbon dioxide and methane. The
results showed that ideal CO2/CH4 separation factor of the improved by the presence of the additives in the following
order: PEG400>Ethanol>PVP>Glycerol. This was in accordance with the shift of binodal line to the (polymer)-
(solvent(s)/nonsolvent) axis. The critical concentration of polysulfone in 1-methyl-2-pyrrolidone (NMP) solvent was
determined by viscometry experiment to be 30 wt. %. Adding tetrahydrofuran as a volatile solvent into the polymer
solution increased the membrane selectivity, which was attributed to delay L-L demixing induced by volatile solvent,
elimination of the macro-void formation during demixing and selective loss of highly volatile solvent from the
outermost surface of the membrane during polymer solution casting.
