FIELD: membrane technology.
SUBSTANCE: invention relates to membrane technology, specifically to methods of modifying anion-exchange membranes in order to improve their characteristics and can be used in production of membranes for electrodialysis apparatus. Disclosed is a method of modifying anion-exchange membranes, made of a polymer containing amino groups of different degree of alkylation, immersing them in 5 % aqueous solution of polymer polyelectrolyte, which is polyquaternium-22. Treatment is carried out for 8 hours at temperature of 50 °C.
EFFECT: invention provides a simple method of modifying anion-exchange membranes, shorter duration of the modification process and stable characteristics of the membranes for a longer operating time.
1 cl, 5 ex, 5 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR MODIFYING AN ANION EXCHANGE MEMBRANE | 2022 |
|
RU2801035C1 |
| METHOD FOR MODIFYING AN ANION EXCHANGE MEMBRANE | 2022 |
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| METHOD OF MAKING HETEROGENEOUS CATION-EXCHANGE MEMBRANE | 2012 |
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| METHOD OF CONCENTRATING BASIC AMINO ACIDS THROUGH ELECTRODIALYSIS | 2009 |
|
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| METHOD TO CHANGE CHARACTERISTICS OF ELECTRODIALYSER WITH ALTERNATING CATION- AND ANION-EXCHANGE MEMBRANES | 2014 |
|
RU2566415C1 |
| METHOD OF SEPARATING AMINO ACIDS AND CARBOHYDRATES BY ELECTRODIALYSIS | 2009 |
|
RU2426584C2 |
| METHOD OF MAKING COMPOSITE CATION-EXCHANGE MEMBRANE | 2012 |
|
RU2480271C1 |
