scholarly journals Characteristics, Performance of Blend CA/SPEEK Ultrafiltration Membranes Prepared by Phase Inversion Method using PEG 600 as an Additive

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
G. Arthanareeswaran ◽  
N. Anatharaman ◽  
M. Raajenthiren
Keyword(s):  
Polyethylene Glycol ◽  
Water Content ◽  
Phase Inversion ◽  
Polymer Composition ◽  
Inversion Method ◽  
Hydraulic Permeability ◽  
Equilibrium Water Content ◽  
Ultrafiltration Membranes ◽  
Phase Inversion Method ◽  
Peg 600

Flat sheet asymmetric polymeric membranes is prepared by phase inversion method from homogeneous solution of 17.5 wt% cellulose acetate (CA) and sulfonated poly ether ether ketone (SPEEK) with polar solvent of N, N’– dimethylformamide (DMF). The different concentration of polyethylene glycol is used as the polymeric additives in the CA/SPEEK casting solution. The effects of polyethylene glycol 600 (PEG 600) concentration on the structure and performance of CA/SPEEK ultrafiltration membranes were investigated in more detail. The optimal preparation conditions were: 17.5 wt% total polymer composition, 65/35 wt% CA/SPEEK blend composition and 10 wt% PEG 600. The permeation performances of the membranes were evaluated in terms of pure water flux, equilibrium water content, hydraulic permeability, and solute rejection. The morphology and structure of the resulting membranes were observed by scanning electron microscope (SEM). CA/SPEEK membranes with higher concentration of 10 wt% PEG have higher PWF and equilibrium water content due to high porosity. With increase in PEG concentration from 0 to 10 wt%, the PWF increases from 129 to 259 lm–2h–1 in 65/35 wt% of CA/SPEEK as blend. When increasing concentration of PEG is substituted for SPEEK in proportion to form a homogeneous blend, the membrane hydraulic resistance reduces from 9.2 to 2.9 kPa/l.m–2.h–1for blend membranes with 0 to 10 wt % PEG 600 at 95/5 wt % CA/SPEEK composition. Solution of proteins of different molecular weight was used to study the permeation performance of prepared membranes using a batch membrane cell of 400 ml capacity.

Novel Nanoparticles Incorporated Polyvinylidene Fluoride Ultrafiltration Membrane

2013 ◽  
Vol 746 ◽  
pp. 390-393
Author(s):  
Qiong Zhi Gao ◽  
Hong Qiang Li ◽  
Xing Rong Zeng
Keyword(s):  
Polyvinylidene Fluoride ◽  
Phase Inversion ◽  
Water Flux ◽  
Silver Ions ◽  
Inversion Method ◽  
Hybrid Films ◽  
Ultrafiltration Membranes ◽  
Pvdf Membrane ◽  
Basic Performance ◽  
Phase Inversion Method

In this study, polyvinylidene fluoride (PVDF) composite ultrafiltration membranes were prepared by a phase inversion method, N,N-dimethylacetamide (DMAc) was used as solvent and polyvinylpyrrolidone (PVP) was used as dispersant, nanoTiO2 and AgNO3 were used as addictive materials. With different doping content of nanoTiO2 and silver ions, those hybrid films have different functions and structure. The basic performance and photocatalytic properties of those ultrafiltration membranes were studied in detail. The experiment results show that adding nanosized TiO2 particles will make the porosity of PVDF membrane increase, adding silver ion with low content can not improve water flux and porosity of membranes, however, nanoTiO2 and silver ions doping together can effectively improve the photocatalytic degradation rate.

The Research of Hydrophilic Modification of PVC/PES Blended Membrane by the Additive of CA

2014 ◽  
Vol 1052 ◽  
pp. 8-13
Author(s):  
Shu Hong Jiang ◽  
Jun Wu ◽  
Hong Zhong Zhou ◽  
Chuan Wei Jiang ◽  
Jun Wang
Keyword(s):  
Photoelectron Spectroscopy ◽  
Phase Inversion ◽  
Water Flux ◽  
Inversion Method ◽  
Equilibrium Water Content ◽  
X Ray ◽  
Hydrophilic Modification ◽  
Poly Vinyl Chloride ◽  
Phase Inversion Method ◽  
Blended Membrane

In order to improve the performance of Poly(vinyl chloride)(PVC)/ polyethersulfone (PES) blended membranes, cellulose acetate (CA) was used as a hydrophilic enhancer to blend with PVC and PES for membrane preparation by phase inversion method. In this study, the results of equilibrium water content (EWC), contact angle and X-ray photoelectron spectroscopy (XPS) confirmed the addition of CA could effectively improve the hydrophilicity of PVC/PES blended membrane. It was also found that water flux of PVC/PES/CA blended membranes increased with the increase of CA concentration.

Preparation and Characterizations of Novel Ultrafiltration Membranes from Sulfonated Poly (Arylene Ether Sulfone)s

2013 ◽  
Vol 664 ◽  
pp. 780-784 ◽  
Author(s):  
Jing Jing Zhang ◽  
Hang Bu ◽  
Shou Wen Chen ◽  
Hui Ping Bi ◽  
Zhao Xia Hu ◽  
...  
Keyword(s):  
Bovine Serum Albumin ◽  
Water Permeability ◽  
Phase Inversion ◽  
Inversion Method ◽  
Aromatic Nucleophilic Substitution ◽  
Ultrafiltration Membranes ◽  
Arylene Ether ◽  
Sulfonation Degree ◽  
Phase Inversion Method ◽  
Sulfonated Poly

Sulfonated poly(arylene ether sulfone)s (SPAES) with different sulfonation degree (DS) were synthesized through aromatic nucleophilic substitution polymerization, and subsequently used to prepare ultrafiltration membranes by the phase inversion method. The performance and morphological structures of the prepared SPAES membranes were investigated and evaluated for ultrafiltration applications. With DS of 3%, the prepared ultrafiltration membrane showed the largest water permeability with bovine serum albumin rejection over 99%.

scholarly journals Metals Ions Removal by Polymer Membranes of Different Porosity

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Katarzyna Jasiewicz ◽  
Robert Pietrzak
Keyword(s):  
Phase Inversion ◽  
Copper Ions ◽  
Polymer Membranes ◽  
Inversion Method ◽  
Equilibrium Water Content ◽  
Acid Base ◽  
Base Surface ◽  
Surface Character ◽  
Oxygen Groups ◽  
Phase Inversion Method

The effect of the amount of pore generating agent (polyvinylpyrrolidone) added to standard polymer membranes containing 18 wt.% of polyethersulfone on the physicochemical properties of the membranes and their capacity for removal of iron and copper ions from the liquid phase was studied. The membranes were obtained by the phase inversion method. The results have shown that the modification of polymer membranes by the use of different amounts of the pore forming agent in their syntheses leads to significant changes in porosity and has beneficial effect on equilibrium water content. The membranes studied were found to show different acid-base surface character, but for all membranes studied, a significant dominance of oxygen groups of acidic character was evidenced. The most effective were the membranes of the lowest content of polyvinylpyrrolidone, while the lowest values of resistance showed the membranes of the highest content of PVP, and so the ones of the greatest porosity.

A straight, open and macro-porous fuel electrode-supported protonic ceramic electrochemical cell

2021 ◽  
Author(s):  
Yuxin Pan ◽  
Kai Pei ◽  
Yucun Zhou ◽  
Tong Liu ◽  
Meilin Liu ◽  
...  
Keyword(s):  
Phase Inversion ◽  
Electrochemical Cell ◽  
Inversion Method ◽  
Phase Inversion Method

A straight, open and macro-porous Ni–BaZr0.1Ce0.7Y0.1Yb0.1O3 fuel electrode-supported protonic ceramic electrochemical cell has been fabricated by a modified phase-inversion method.

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