Characterization of polyethersulfone/polyimide blend membranes prepared by a dry/wet phase inversion: Precipitation kinetics, morphology and gas separation

2010 ◽  
Vol 351 (1-2) ◽  
pp. 141-148 ◽  
Author(s):  
Junyoung Han ◽  
Wonseok Lee ◽  
Jae Min Choi ◽  
Rajkumar Patel ◽  
Byoung-Ryul Min
Keyword(s):  
Gas Separation ◽  
Phase Inversion ◽  
Precipitation Kinetics ◽  
Blend Membranes ◽  
Wet Phase Inversion

Synthesis and Characterization of Polysulfone/Montmorillonite (PSF/MMT) Mixed Matrix Membrane for Gas Separation

2014 ◽  
Vol 925 ◽  
pp. 18-22 ◽  
Author(s):  
P.C. Oh ◽  
N.A. Mansur
Keyword(s):  
Phase Inversion ◽  
Deionized Water ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Inversion Method ◽  
Mixed Matrix ◽  
Flat Sheet ◽  
Wet Phase Inversion ◽  
Phase Inversion Method

In this paper, flat sheet polysulfone (PSF) membrane and polysulfone/montmorillonite (PSF/MMT) mixed matrix membranes with different MMT contents were prepared by dry-wet phase inversion method.N-methyl-2-pyrrolidone (NMP) and deionized water were used as a solvent and coagulant, respectively. The morphology and structure of membranes were analyzed by scanning electron microscope. Thermogravimetric analysis was also performed to examine the thermal decomposition of the synthesized membrane. Results showed that MMT had a good dispersion in the PSF matrix.

Preparation and Characterization of Microporous Membranes Prepared by Wet Phase Inversion. Application to Ni (II) Transport

2009 ◽  
Vol 609 ◽  
pp. 183-188 ◽  
Author(s):  
Said Bey ◽  
M.G. Bounomenna ◽  
M. Benamor ◽  
Enrico Drioli
Keyword(s):  
Phosphoric Acid ◽  
Metal Ions ◽  
Phase Inversion ◽  
Liquid Membranes ◽  
Microporous Membranes ◽  
Comparison Study ◽  
Supported Liquid Membranes ◽  
Wet Phase Inversion ◽  
And Control

Wet phase inversion is used to prepare and control morphology of membrane based on PEEKWC in DMA at 14wt %. A comparison study has been done with Polysulfone and PVDF as basic materials for membrane preparation. The effect of the coagulant bath is studied by using water and ethanol as nonsolvent. Excepting for PVDF, the micrographs shows that no strong effect in the structure of the membranes. The macro-voids still exist but less numerous and large in the case of membrane immersed in ethanol coagulant bath. Microporous membrane in some cases was obtained. These membranes were used in supported liquid membranes experiments for Ni(II) metal ions transports using 2-diethyl hexyl phosphoric acid (D2EHPA ) as carrier.

scholarly journals Preparation and Characterization of Asymmetric Ultrafiltration Membrane for Lysozyme Separation: Effect of Polymer Concentration

2017 ◽  
Vol 11 (1) ◽  
Author(s):  
A. Nora’aini ◽  
H. Sofiah ◽  
A. Asmadi ◽  
M. Abdul Wahab
Keyword(s):  
Phase Inversion ◽  
Protein Production ◽  
Polymer Concentration ◽  
Downstream Processing ◽  
High Yield ◽  
Membrane Performance ◽  
Phase Inversion Technique ◽  
Wet Phase Inversion ◽  
And Performance

Penetrations of membrane technology in the downstream processing of protein production are now well accepted due its effectiveness and ability to generate high yield of product. This study aimed to investigate the effects of polymer concentrations on morphology and performance of ultrafiltration membranes for lysozyme separation. Three membrane solutions with different polymer concentration of Polyehtersulfone/N–Methyl pyrolidone/water with 15% w/w, 17% w/w and 19% w/w (15% [UF 15], 17% [UF 17] and 19% [UF 19]) were used to prepare asymmetric flat sheets membranes via a simple dry/wet phase inversion technique. The data obtained shows that the permeability coefficient decreased from 10.9 × 10–6 to 0.44 × 10–6m3/m2.s.bar with increasing polymer concentrations. UF 15 membrane discovers the highest flux and lysozyme transmission, consequently promoted this membrane as an optimum membrane for lysozyme separation. This study proves that the polymer concentration was greatly affected the membrane performance and structural properties consecutively, promoted an improvement of UF membrane capability for lysozyme separation.

Influence of Hydrophilic Polymer on Proteins Separation, Molecular Weight Cut-off (MWCO) and Average Pore Size of Polysulfone Blend Membrane

2015 ◽  
Vol 74 (7) ◽  
Author(s):  
Asmadi Ali ◽  
Rosli Mohd Yunus ◽  
Mohamad Awang ◽  
Mohd Azizi Che Yunus
Keyword(s):  
Molecular Weight ◽  
Pore Size ◽  
Structural Properties ◽  
Phase Inversion ◽  
Average Pore Size ◽  
Separation Performance ◽  
Average Pore ◽  
Blend Membrane ◽  
Blend Membranes ◽  
Wet Phase Inversion

The aim of this study is to investigate the influence of different composition of cellulose acetate phtalate (CAP) on the membrane structural properties of polysulfone (PSf) membrane which in turn affect the separation performance of PSf/CAP blend membrane. The PSf/CAP blend membranes were prepared by using casting solutions contain 17 wt% of polymer via wet phase inversion process. The results showed that increasing the composition of CAP in PSf/CAP blend membranes increased molecular weight cut-off (MWCO), average pore size and pore density which then increased protein solution permeate fluxes but reduced proteins rejection of PSf/CAP blend membranes. Pure PSf membranehas the lowest membrane structural properties compared to blend membranes. This characteristic contributed to decrease in protein permeation flux and increase proteins rejection. 

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