Preparation and characterization of organic–inorganic hybrid anion-exchange membranes for electrodialysis

Khan, Moonis Ali; Kumar, Mahendra; ALOthman, Zeid A.

doi:10.1016/j.jiec.2014.04.002

Cited by 34 publications

(14 citation statements)

References 40 publications

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“…IEC= 1.23 meq g −1 was measured for the unfilled membrane. A comparative value of 1.18 was determined for IEC of the unfilled membrane by the H NMR data. As seen in the Figure , existence of cation groups on the surface of ASi‐II particles (IEC = 2.1 meq g −1 ) causes increasing IEC by enhancing the nanoparticle content and achieving the highest IEC of 1.45 meq g −1 for AMSi‐II.…”

Section: Resultsmentioning

confidence: 99%

“…Ion exchange capacity (IEC) of the QPES membrane was measured by the standard back titration method and H NMR . The samples were initially equilibrated with solution of 1 M NaOH for 24 h. The excess solution was removed by washing and immersing the membrane in deionized water for 24 h. The membrane was inserted in a 0.01 M HCl solution for 24 h and then titrated by a 0.01 M NaOH solution.…”

Section: Methodsmentioning

confidence: 99%

“…Anion exchange membranes (AEMs) are being employed in electrochemical separation processes such as electrodialysis, fuel cell, diffusion dialysis, and electro‐deionization . Despite growing demands for AEMs, −5 few works have been accomplished about them compared to the researches performed for cation exchange membranes.…”

Section: Introductionmentioning

confidence: 99%

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Incorporating functionalized silica nanoparticles in polyethersulfone‐based anion exchange nanocomposite membranes

Moghadasi

Mortaheb

2016

J of Applied Polymer Sci

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In order to investigate for anion exchange membranes (AEMs) with improved properties, four series of polyethersulfone‐based composite AEMs are fabricated by incorporating pristine and three functionalized silica nanoparticles containing propylamine, trimethylpropylamine, and melamine‐based dendrimer amine groups. The results show that by choosing appropriate functional agent, anion exchange membranes with improved parameters can be achieved. The polymeric matrix of the membranes is synthesized by chloromethylation of polyethersulfone using thionyl chloride followed by amination with trimethylamine (TMA). The effectiveness of chloromethylation process is confirmed by 1H NMR analysis. The effects of functional groups on characteristic and transport properties of the prepared composite membranes i.e., SEM, IEC, water uptake, porosity transport properties, and conductivity are investigated. The scanning electron microscope images illustrates that the synthesized membranes possess dense structures. Ion exchange capacity (IEC), water uptake, transport properties, and conductivity of the composite membranes are measured. In addition, the morphology and thermal stability are characterized. IECs and ion conductivities of up to 1.45 meq g−1 and 45.46 mS cm−1 and moderate transport characteristics are obtained from the modified membranes which confirm that these membranes are appropriate for applying in electro‐membrane processes. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44596.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Incorporating functionalized silica nanoparticles in polyethersulfone‐based anion exchange nanocomposite membranes

Moghadasi

Mortaheb

2016

J of Applied Polymer Sci

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“…The existing separation methods are limited by high costs and energy consumption. Pervaporation has garnered attention as an energy efficient novel membrane separation technique to separate the minor components within a dilute solution [217][218][219][220][221][222][223]. Pervaporation can separate monomers from crude products with only a moderate cost in energy.…”

Section: Page 11 Of 35mentioning

confidence: 99%

Recently developed applications for natural hydrophilic polymers

Halake

Kim

Birajdar

et al. 2016

Journal of Industrial and Engineering Chemistry

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“…Membrane performance depends, among other factors, on the intrinsic properties of the material that constitutes the selective medium and the structure formed by this material exerts a major influence on its permeability 2 . In many studies 3,4 , composite membranes were made from the blend of organic and inorganic materials for different applications. The preparation of these new membranes has shown improved permeability and selectivity characteristics.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of PA66/Alumina Composite Membrane

et al. 2015

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In this study, polymer/ceramic composite membranes were prepared and characterized. The polymer used was polyamide 66 (PA66) deposited by dip coating on the inner surface of α-alumina-based (Al 2 O 3 ) microporous tube. A coating on the ceramic support surface and the formation of the selective layer was analyzed by scanning electron microscopy (SEM) in membranes with one (PA-1) and two layers (PA-2). The results of mercury porosimetry showed that the deposition of the polyamide layers decreases the average pore size. The PA-1 presented an average pore size of 0.35 μm, while the PA-2 presented two peaks of 0.18 and 0.56 μm. Both showed a superior performance than the ceramic support (pore diameter of 0.65 μm). Although, the permeate flux was higher with an impregnation membrane, the number of layers (one or two) just introduced a slight difference in pore statistical analysis. The order of rejection coefficient values for protein molecules is BSA > egg albumin > trypsin. The permeation tests showed that the composite membrane can be applied in ultrafiltration processes with MWCO of 69 kDa.

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Preparation and characterization of organic–inorganic hybrid anion-exchange membranes for electrodialysis

Cited by 34 publications

References 40 publications

Incorporating functionalized silica nanoparticles in polyethersulfone‐based anion exchange nanocomposite membranes

Incorporating functionalized silica nanoparticles in polyethersulfone‐based anion exchange nanocomposite membranes

Recently developed applications for natural hydrophilic polymers

Preparation and Characterization of PA66/Alumina Composite Membrane

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