CATEGORY: DESALINATION
Desalination, Volume 294, 15 May 2012, Pages
44–52
Hollow
fiber ultrafiltration membranes prepared from blends of poly (vinyl chloride)
and polystyrene
Qusay F. Alsalhy
Chemical Engineering Department, University of Technology, Alsinaa Street No.
52, B.O 35010, Baghdad, Iraq
Abstract
Using
the phase inversion method, researchers fabricated polymeric blend
ultrafiltration membranes based on poly(vinyl chloride) (PVC) and polystyrene
(PSR). They used a scanning electron
microscope (SEM) to characterize cross-section, outer, and inner surfaces of
the hollow fiber structure. Differential scanning calorimetry (DSC) was used
for the determination of the glass transition temperature (Tg) of the blends.
Experimental results revealed that the structural morphology of the
polymeric blend varied with the PSR concentration. There is no significant
decrease in pure water permeation flux by using 1 and 2 wt.% PSR concentration
in dope solution. The PVP K-90 rejection highly improved from 76.2% to 98.53%
with the addition of 1 wt.% PSR concentration. The PVC/PSR blends show
incompatibility by the results of SEM and DSC.
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