scholarly journals Verification Stability of Anion-Exchange Membrane with Surface Modification with Application in Electrodialysis Process

2018 ◽  
Author(s):  
Lucie Zárybnická ◽  
Eliska Stranska
Keyword(s):  
Surface Modification ◽  
Anion Exchange ◽  
Exchange Capacity ◽  
Sem Analysis ◽  
Anion Exchange Membrane ◽  
Point Of View ◽  
Ion Exchange Capacity ◽  
Ft Ir ◽  
One Year ◽  
Exchange Membrane

The present work deals with verification stability of the prepared anion-exchange membrane with surface modification in the time. The surface modification of a commercial ultrafiltration poly(ethersulfone) membrane was carried out graft polymerization. Poly(styrene-co-divinylbenzene-co-4-vinylbenzylchloride) surface layer was covalently attached onto commercial ultrafiltration support layer. The membrane was tested from the point of view of water content, ion-exchange capacity, specific resistance, permselectivity, FT-IR spectroscopy and SEM analysis. The tested characteristics (IEC, permselectivity, resistances, structure) of the prepared membrane were same after one year from preparation. The prepared membranes can find use in electrodialysis processes.

scholarly journals Preparation of Two-Layer Anion-Exchange Poly(ethersulfone) Based Membrane: Effect of Surface Modification

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Lucie Zarybnicka ◽  
Eliska Stranska ◽  
Jana Machotova ◽  
Gabriela Lencova
Keyword(s):  
Surface Layer ◽  
Surface Modification ◽  
Ion Exchange ◽  
Anion Exchange ◽  
Exchange Capacity ◽  
Sem Analysis ◽  
Electrochemical Characteristics ◽  
Anion Exchange Membranes ◽  
Ion Exchange Capacity ◽  
Effect Of Surface

The present work deals with the surface modification of a commercial microfiltration poly(ethersulfone) membrane by graft polymerization technique. Poly(styrene-co-divinylbenzene-co-4-vinylbenzylchloride) surface layer was covalently attached onto the poly(ethersulfone) support layer to improve the membrane electrochemical properties. Followed by amination, a two-layer anion-exchange membrane was prepared. The effect of surface layer treatment using the extraction in various solvents on membrane morphological and electrochemical characteristics was studied. The membranes were tested from the point of view of water content, ion-exchange capacity, specific resistance, permselectivity, FT-IR spectroscopy, and SEM analysis. It was found that the two-layer anion-exchange membranes after the extraction using tetrahydrofuran or toluene exhibited smooth and porous surface layer, which resulted in improved ion-exchange capacity, electrical resistance, and permselectivity of the membranes.

Using Ion Exchange Capacity to Control Water Uptake in Electrodes of Low-Temperature Anion Exchange Membrane Electrolyzers

2020 ◽  
Vol MA2020-02 (38) ◽  
pp. 2442-2442
Author(s):  
Garrett Huang ◽  
Mrinmay Mandal ◽  
Alexandra Dobbs ◽  
Katelyn Groenhout ◽  
Paul A Kohl
Keyword(s):  
Low Temperature ◽  
Ion Exchange ◽  
Anion Exchange ◽  
Water Uptake ◽  
Exchange Capacity ◽  
Anion Exchange Membrane ◽  
Ion Exchange Capacity ◽  
Exchange Membrane ◽  
Control Water

scholarly journals Preparation and Characterization of Alkaline Anion Exchange Membrane for Fuel Cells Application

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Ganmin Zeng ◽  
Jing Han ◽  
Beibei Dai ◽  
Xiaohui Liu ◽  
Jinkun Li ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Anion Exchange ◽  
Water Uptake ◽  
Composite Membrane ◽  
Composite Membranes ◽  
Exchange Capacity ◽  
Anion Exchange Membrane ◽  
Ion Exchange Capacity ◽  
Exchange Membrane

Alkaline anion exchange membrane (AAEM) plays an important role in the development of fuel cell. In this research, the electrostatic spinning technology was used to prepare AAEM. We use BC/TiO2 membrane as substrate by introduced quaternary ammonium groups to prepare BC/TiO2/CHPTAC (3-chloro-2-hydroxypropyl trimethyl ammonium chloride) composite membranes. The as-prepared composite membrane was characterized by XRD, SEM, XPS, and TG methods. It was found that BC/TiO2/CHPTAC (0.05 g) membrane exhibited high thermal stability and better comprehensive performance. The degree of substitution (DS), water uptake, and ion-exchange capacity (IEC) of BC/TiO2/CHPTAC membranes were investigated. The results showed that the DS, water uptake, and IEC of BC/TiO2/CHPTAC membrane were 1.16, 140%, and 1 mmol·g−1, respectively. We believe this composite membrane with excellent performances can promise many applications in fuel cells.

An integrally thin skinned asymmetric architecture design for advanced anion exchange membranes for vanadium flow batteries

2015 ◽  
Vol 3 (33) ◽  
pp. 16948-16952 ◽  
Author(s):  
Daishuang Zhang ◽  
Xiaoming Yan ◽  
Gaohong He ◽  
Le Zhang ◽  
Xinhong Liu ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Exchange Capacity ◽  
Anion Exchange Membrane ◽  
Architecture Design ◽  
Anion Exchange Membranes ◽  
Ion Exchange Membranes ◽  
Ion Exchange Capacity ◽  
Flow Batteries ◽  
Exchange Membrane

We proposed an integrally thin skinned asymmetric anion exchange membrane with sufficiently low ion exchange capacity for vanadium flow batteries (VFBs), and this work provides new insights into the design, fabrication and commercialization of ion exchange membranes for VFBs.

scholarly journals Anion-Exchange Membrane with Poly(3,3’-(hexyl) bis(1-vinylimidazolium) bromide)/PVC Composites Prepared by Inter-polymerization

2019 ◽  
Vol 4 (10) ◽  
pp. 116-120
Author(s):  
Soo-Yeoun Kim ◽  
Woonjung Kim ◽  
Seong-Ho Choi
Keyword(s):  
Anion Exchange ◽  
Exchange Capacity ◽  
Sem Analysis ◽  
Anion Exchange Membrane ◽  
Vanadium Redox Flow Battery ◽  
Anion Exchange Membranes ◽  
Battery Separator ◽  
Composite Polymers ◽  
Vanadium Permeability ◽  
Exchange Membrane

The advanced anion-exchange membranes with the poly(3,3’-(hexyl)bis(1-vinylimidazolium)bromide), PHVB, was synthesized by inter-polymerization of  a 3,3'-(hexyl)bis(1-vinylimidazolium) bromide in poly(vinyl chloride), PVC, solution.  We confirmed the successful preparation of the advanced anion-exchange membrane (AEM) such as ionic conductivity (S/cm), water uptake (%), ion-exchange capacity (meq/g), vanadium permeability, thermal properties, and SEM analysis, respectively.  The vanadium redox flow battery (VRFB) performances using the prepared AEM based on PHVB/PVC composite polymers in organic electrolytes was examined.  In the prepared advanced AEM, the maximum voltages reached 2.5 V under the fixed current value of 0.005mA.  The synthesized advanced AEM has also good stability with organic electrolyte by battery performance under 1000 cycles. As results, the advanced AEM based on PHVB/PVC prepared by the inter-polymerization is suitable for use as a battery separator in VRFB.

scholarly journals A Raman spectro-microscopic investigation of ETFE-based radiation-grafted anion-exchange membranes

RSC Advances ◽  
2017 ◽  
Vol 7 (75) ◽  
pp. 47726-47737 ◽  
Author(s):  
Wai Hin Lee ◽  
Carol Crean ◽  
John R. Varcoe ◽  
Rachida Bance-Soualhi
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Cross Section ◽  
Microscopic Investigation ◽  
Exchange Capacity ◽  
Anion Exchange Membrane ◽  
Anion Exchange Membranes ◽  
Ion Exchange Capacity ◽  
Exchange Membrane

Raman spectro-microscopy on a radiation-grafted anion-exchange membrane detected alkali degradation throughout its cross-section that quantitatively matched loss of ion-exchange capacity.

Improvement of the antifouling potential of an anion exchange membrane by surface modification with a polyelectrolyte for an electrodialysis process

2012 ◽  
Vol 417-418 ◽  
pp. 137-143 ◽  
Author(s):  
Sri Mulyati ◽  
Ryosuke Takagi ◽  
Akihiro Fujii ◽  
Yoshikage Ohmukai ◽  
Tatsuo Maruyama ◽  
...  
Keyword(s):  
Surface Modification ◽  
Anion Exchange ◽  
Anion Exchange Membrane ◽  
Exchange Membrane
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