Fabrication and characterization of moderately hydrophobic membrane with enhanced permeability using a phase-inversion method in membrane distillation

2020 ◽  
Vol 183 ◽  
pp. 173-181
Author(s):  
Youngkwang Park ◽  
Jaehyun Ju ◽  
Yunchul Woo ◽  
June-Seok Choi ◽  
Sangho Lee
Keyword(s):  
Phase Inversion ◽  
Membrane Distillation ◽  
Inversion Method ◽  
Hydrophobic Membrane ◽  
Fabrication And Characterization ◽  
Phase Inversion Method

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.

scholarly journals Elaboration and characterization of multilayer polymeric membranes: effect of the chemical nature of polymers

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Youcef Sedkaoui ◽  
Naima Abdellaoui ◽  
Omar Arous ◽  
Hakim Lounici ◽  
Noreddine Nasrallah ◽  
...  
Keyword(s):  
Phase Inversion ◽  
Chemical Nature ◽  
Cellulose Triacetate ◽  
Polymeric Membranes ◽  
Polymeric Membrane ◽  
Inversion Method ◽  
Ion Separation ◽  
Phase Inversion Method ◽  
Pvc Membranes

AbstractThe transport phenomena across polymeric membrane may be enhanced by applying various strengths inside or outside the system. Recently, polymer inclusion membrane (PIM) has been considered one of the most popular methods that acts as a sink for the contaminant and immobilizes it. In the literature, there is no report about how to achieve the synthesis of multi-layer PIMs. In this paper, an improvement of a novel category of membrane without carrier for performing ion separation is reported. Different membranes were elaborated from binary mixtures of polymers, cellulose triacetate (CTA), polymethyl methacrylate (PMMA) and polyvinyl chloride (PVC) using 2-nitrophenyl octyle-ether (NPOE) as plasticizer and carrier in the same time, in order to increase specific interactions between the different polymers. The membranes (Polymer 1– NPOE – Polymer 2) were synthesized by phase inversion method modified by changing the procedure of a plasticizer/carrier addition and characterized by FTIR, TGA, SEM, zeta potential and contact angle. The CTA-based membranes exhibited well-defined pores partially filled with the second polymer and NPOE. Overall, our results showed that the addition of NPOE resulted in homogeneous membranes with modified physical properties, such as thickness, and hydrophobicity. A study of transport of Pb(II) using the synthesized membranes was studied. Dialysis experiments of lead ions across a polymeric membrane have shown that (CTA + NPOE + PMMA) and (PMMA + NPOE + PVC) membranes proved a good performance in one stage by fixing 12.15 and 25.31% of lead, respectively, without any additionally added carrier and acids. These results confirm the affinity between a basic polymer (poly-methyl methacrylate) and the metallic ion (Pb2+).

Preparation and Characterization of Antimicrobial PES Ultra-Filtration Membrane Modified with Capsaicin

2011 ◽  
Vol 356-360 ◽  
pp. 2338-2343 ◽  
Author(s):  
Han Min Wang ◽  
Xue Li Gao ◽  
Bao Wei Su ◽  
Cong Jie Gao
Keyword(s):  
Phase Inversion ◽  
Antibacterial Property ◽  
Inversion Method ◽  
Polyethylene Glycol 400 ◽  
Membrane Performance ◽  
Filtration Membrane ◽  
Membrane Flux ◽  
Ultra Filtration ◽  
Phase Inversion Method

The polyethersulfone ultra-filtration membrane was prepared by phase inversion method using polyethersulfone(PES), polyethylene glycol 400(PEG400) and N，N- dimethylamide(DMAC) as materials, and was modified by adding a capsaicin monomer named MBHBA which possess antibacterial property. The effects of MBHBA content on the ultra-filtration membrane performance were discussed. The results showed that the addition of MBHBA monomer effectively increased the membrane flux. And the modified membrane had strong inhibitory activity against Escherichia coli.

scholarly journals Characterization of PVDF/Graphene Nanocomposite Membranes for Water Desalination with Enhanced Antifungal Activity

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1279
Author(s):  
Emilia Gontarek-Castro ◽  
Maria Krystyna Rybarczyk ◽  
Roberto Castro-Muñoz ◽  
Monica Morales-Jiménez ◽  
Blanca Barragán-Huerta ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Membrane Distillation ◽  
Water Desalination ◽  
Inversion Method ◽  
Full Characterization ◽  
Hydrophobic Membranes ◽  
Graphene Nanocomposite ◽  
Phase Inversion Method ◽  
Water Repellence

Seawater desalination is a worldwide concern for the sustainable production of drinking water. In this regard, membrane distillation (MD) has shown the potential for effective brine treatment. However, the lack of appropriate MD membranes limits its industrial expansion since they experience fouling and wetting issues. Therefore, hydrophobic membranes are promising candidates to successfully deal with such phenomena that are typical for commercially available membranes. Here, several graphene/polyvinylidene (PVDF_G) membranes with different graphene loading (0–10 wt%) were prepared through a phase inversion method. After full characterization of the resulting membranes, the surface revealed that the well-dispersed graphene in the polymer matrix (0.33 and 0.5 wt% graphene loading) led to excellent water repellence together with a rough structure, and a large effective surface area. Importantly, antifungal activity tests of films indicated an increase in the inhibition percentage for PVDF_G membranes against the Curvularia sp. fungal strain. However, the antifungal surface properties were found to be the synergistic result of graphene toxicity and surface topography.

Preparation and Characterization of PVDF Hydrophobic Membrane

2011 ◽  
Vol 221 ◽  
pp. 338-342 ◽  
Author(s):  
Hua Feng Zhang ◽  
Yu Zhong Zhang ◽  
Li Gang Lin ◽  
Xiao Li Ding ◽  
Hong Li
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Polyvinylidene Fluoride ◽  
Membrane Surface ◽  
Inversion Method ◽  
Hydrophobic Membrane ◽  
Water Contact ◽  
Dry Process ◽  
Phase Inversion Method

Polyvinylidene fluoride (PVDF) hydrophobic membrane has been prepared by phase inversion method. The effects of concentration of PVDF, different processes of preparations, and different surface roughness on hydrophobic capability of membrane surface (water contact angle, WCA) have been investigated. The results showed that, hydrophobic ability of PVDF membranes decreased with the increasing concentration of PVDF. WCA of membrane prepared by was increasing. Membrane surface hydrophobic ability increased with the increasing surface roughness. The contact angle of membrane comes to 141° with dry process and 10% PVDF concentration.

scholarly journals Improvement of Membrane Distillation Using PVDF Membrane Incorporated with TiO2 Modified by Silane and Optimization of Fabricating Conditions

Membranes ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 95
Author(s):  
Fida Tibi ◽  
Seong-Jik Park ◽  
Jeonghwan Kim
Keyword(s):  
Direct Contact ◽  
Phase Inversion ◽  
Membrane Distillation ◽  
Inversion Method ◽  
Permeate Flux ◽  
Pvdf Membrane ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Phase Inversion Method ◽  
Silane Concentration

The objectives in this study are to improve the performance of PVDF membrane by incorporating TiO2 and silane at various dosages and optimize fabricating conditions by using response surface methodology (RSM) for membrane distillation (MD) application. The PVDF membrane was synthesized by phase inversion method using various TiO2, silane and polymer concentrations. Membranes were characterized by performing contact angle measurements, SEM and FTIR observations. Ammonia rejection and permeate flux were measured by operating a direct contact distillation module treating ammonium chloride solution. A PVDF membrane created by adding TiO2 modified by silane improved membrane hydrophobicity. However, the effect of silane on membrane hydrophobicity was less pronounced at higher TiO2 concentrations. Highest ammonium rejection was associated with the highest membrane hydrophobicity. RSM analysis showed that fabricating conditions to achieve highest flux (10.10 L/m2·h) and ammonium rejection (100.0%) could be obtained at 31.3% silane, 2.50% TiO2, and 15.48% polymer concentrations. With a PVDF-TiO2 composite membrane for MD application, the effect of TiO2 was dependent upon silane concentration. Increasing silane concentration improved membrane hydrophobicity and ammonium rejection. RSM analysis was found to bea useful way to explore optimum fabricating conditions of membranes for the permeate flux and ammonium rejection in MD.

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.

Sign in / Sign up

Export Citation Format

Share Document