Anion Exchange Membranes,Thickness:600𝜇m-230𝜇m,SheetResistance:6.5𝛺·cm2-10.0𝛺·cm2

Catalog Number	ACMA00033534
Application	·Desalting, brackish water desalination ·Inorganic salt concentration
Color Form	Light yellow
Feature	Standard
Ionic Form	Cl-
Moisture Content	22%-24%
Notice For Use	·Soak in 5% NaCl solution for 24 hours for pretreatment ·Use under humid conditions to avoid dryness ·Avoid excessive bending, folding and close to sharp objects ·Store in 1-108% sodium chloride solution and avoid light ·Avoid use in solutions containing oils, oxidizing substances (concentrated nitric acid, perchloric acid, etc.) and ionic high molecular weight organic compounds (surfactants, etc.)
pH Range	0-14
Rupture Strength	≥0.25Mpa
Selectivity	90%-95%
Sheet Resistance	6.5𝛺·cm2-10.0𝛺·cm2
Size	We can provide special customized size according to your requirement
Specification	Single Sheet
Thermal Stability	5°C-120°C
Thickness	600𝜇m-230𝜇m
Total Exchange Capacity	1.5meq/g-1.8meq/g
Type	Anion

Frontier Research

Preparation of Alkali-Stable Anion Exchange Membrane and Its Application in Electro-Desalination Process

Alam M M, et al. Desalination, 2021, 497, 114779.

In this work, the alkali stability of anion exchange membrane (AEM) was improved by introducing 1-naphthol derivative organic compounds into bromomethylated poly (2, 6-dimethyl-1, 4-phenylene oxide) BPPO matrix to functionalize the membrane, which was beneficial to its long-term stability in electro-desalination process under limiting current density conditions.
Preparation of functionalized AEM membranes
· Firstly, 1-naphthol derivative organic compounds were synthesized using 1-naphthol aromatic alcohol as raw material, and they were named (2-[dimethylaminomethyl] naphthalen-1-ol (moiety-1)) and (2,7 bis-[dimethylaminomethyl] naphthalen-1-ol (moiety-2)).
· To fabricate membranes, the commercial BPPO polymer was dissolved in a 10 wt % NMP solvent and subsequently washed with DI water for up to two days. The precipitated BPPO was then collected and dried in a vacuum oven at 40 ◦C.
· The purified BPPO was then dissolved in a 10 wt % NMP solution at approximately 5 ◦C, followed by the stoichiometric addition of Moiety-1 (1:0.11 & 1:0.04) and Moiety-2 (1:0.06 & 1:0.03) in a 1 ml NMP solution.
· The resulting mixture was stirred for 120 s to 150 s until a uniform solution was achieved. This solution was then poured onto a flatting glass and placed on a hot plate for continuous heating at 60 ◦C for 24 hours.

Q&A

What are some applications of anion exchange membranes?

Some applications of anion exchange membranes include electrodialysis, diffusion dialysis, gas separation, fuel cells, and sensors.

What is the most crucial utilization of anion exchange membranes for environmental protection?

The most crucial utilization of anion exchange membranes for environmental protection is the separation of specific salts from aqueous electrolyte solutions through electrodialysis.

What are some polymers that have been used in anion exchange membrane fabrication?

Some polymers that have been used in anion exchange membrane fabrication include polystyrene, polysulfone, polyether imide, poly(2,6-dimethyl-1,6-phenylene oxide) (PPO), poly(arylene ether), poly(phthalazinone ether ketone) (PPEK), and poly(phthalazinone ether sulfone ketone) (PPESK).

Why has the use of chloromethyl ether (CME) for chloromethylation process been restricted since 1970?

The use of chloromethyl ether (CME) for chloromethylation process has been restricted since 1970 because it is carcinogenic and hazardous.

What are some alternative techniques suggested to minimize the hazardous impacts of anion exchange membranes?

Some alternative techniques suggested to minimize the hazardous impacts of anion exchange membranes include in situ generation, chlorination of vinyl aromatic polymers using sulfuryl chloride, and polymerization of halomethyl substituted aromatic monomers such as chloro methyl styrene.

What is a facile approach for the synthesis of anion exchange membranes?

A facile approach for the synthesis of anion exchange membranes is benzylic bromination of polymers, resulting in the formation of quaternary ammonium moieties.

What are some polymers that have been used to attain anion exchange membranes via bromination and subsequent quaternization?

Some polymers that have been used to attain anion exchange membranes via bromination and subsequent quaternization include polysulfone, PPO, poly(phenylene), and poly(arylene ether ketone).

What are some characteristics of anion exchange membranes made through bromination and quaternization?

Anion exchange membranes made through bromination and quaternization possess high ion exchange capacity (IEC), ionic conductivity, and low water uptake.

What are some diverse applications of anion exchange membranes that require immense durability?

Some diverse applications of anion exchange membranes that require immense durability include fuel cell preparation and biomedical devices.