Bipolar Membranes,Thickness:150𝜇m-250𝜇m

INQUIRY

Catalog Number	ACMA00033541
Application	·Preparation of inorganic acids and bases ·Flue gas desulfurization
Color Form	Off-White/Beige
Feature	Acid permeability
Moisture Content	35%-43%
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 1-76% 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	1.0-14
Product Type	Bipolar
Selectivity	90%-95%
Sheet Resistance	<2𝛺·cm2
Size	We can provide special customized size according to your requirement
Specification	Single Sheet
Thermal Stability	5°C-120°C
Thickness	150𝜇m-250𝜇m

Q&A

What are bipolar membranes (BPMs) composed of?

Bipolar membranes are composed of two layers: a negatively charged cation-exchange layer (CEL) and a positively charged anion-exchange layer (AEL).

What is the main function of a BPM?

The main function of a BPM is a disproportionation reaction, where water is electro-dissociated into protons and hydroxide ions at the bipolar junction.

How is water dissociation in BPMs different from water splitting in electrolysis?

Water dissociation in BPMs occurs within the membrane without any gas formation, whereas water splitting in electrolysis occurs at electrodes.

What are some methods used to study water dissociation and ion transfer in membranes?

Various methods such as voltammetry, chronopotentiometry, electrochemical impedance spectroscopy (EIS), and measuring ion transport numbers in the membranes can be used to study water dissociation and ion transfer in membranes.

How are the mechanical properties of IEMs determined?

The bursting strength and tensile strength of IEMs are usually measured using a Mullen tester and a Schopper's tension tester, respectively.

Why is shear stress analysis needed for bipolar membranes?

Shear stress analysis may be needed for bipolar membranes due to the presence of an interface between monolayers.

What are some possible causes of spontaneous delamination in membranes?

Possible causes of spontaneous delamination in membranes include high pressure in the bipolar junction, loss of fixed charges in the monopolar layers, and high rates of ion recombination.

What is transmittance in the context of BPMs?

Transmittance refers to the ability of BPMs to allow sunlight to pass through, which is important for certain applications such as water photo-electrolysis.

How much visible light can specially prepared BPMs transmit?

Specially prepared BPMs for water photo-electrolysis can transmit up to 75% of visible light.

What is the novel environmentally friendly technology that commercial BPMs have been examined for?

Commercial BPMs have been examined for water photo-electrolysis, which is a novel environmentally friendly technology.

Technical Information Research Information

Bipolar Membrane Electrodialysis Technology

Bipolar membrane electrodialysis (BMED) is a system that combines electrodialysis (ED) and bipolar membrane (BPM), developed for its ability to convert anions and cations into acids and bases, respectively.