Abstract
Phase inversion via immersion precipitation was employed for PES tubular membrane preparation and using N,N-dimethylacetamide(DMAc) as solvent, PEG-400 as main constant additive. Through the experimental study we obtain a preparation process of PES tubular membrane with superior properties. Ethanol caused an increment in the flux at low coagulation bath temperature relative to the non-ethanol. And the low temperature of coagulation bath also improve membrane’s rejection and its influence was most important. Other conditions included that the casting solution temperature must not be too high (15? was best) and the membrane don’t be exposed to atmosphere in long time. The prepared membrane under this condition shows excellent performance on flux and retention. Test results show that the flux can be up to 160 L·m-2h-1 and the rejection can reach more than 97% (for ovalbvmin) under this condition. The flux was increased clearly compare to non-ethanol and high temperature.
Highlights
Polysulfone (PSF) and polyethersulfone (PES) are widely used for the preparation of microfiltration (MF),ultrafiltration (UF) and gas separation membranes
Several researches have reported the eflfect of additives such as polyvinylpyrolidone(PVP)on the performance of an ultrafiltration membrane.This experiment was conducted to study the effect of additives such as PEG-400 and ethanol on the performance of membrane
The perform ances of the prepared membranes were characterized by using a cross flow system
Summary
Polysulfone (PSF) and polyethersulfone (PES) are widely used for the preparation of microfiltration (MF),ultrafiltration (UF) and gas separation membranes. The perform ances of the prepared membranes were characterized by using a cross flow system. The performance of the prepared membranes were characterized by using a cross flow system.The detail of the experimental set up is shown in Fig.[1]. Fig.[1] shows pure water permeation of prepared membranes cast from 28 wt% PES, 51 wt% DMAc and 10wt%, wt%, 18 wt% and 22wt% PEG.
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