Effect of Unipolar Corona Discharge Parameters on the Surface Characteristics of Polysulfonamide Membranes and Their Separation Efficiency for Water-in-Oil Emulsions

Ultrafiltration polysulfonamide (PSA) membranes with a molecular weight cutoff of 100 kDa have been treated in a unipolar corona discharge field in an air atmosphere at varying voltage (5, 15, 25, and 35 kV) and corona discharge treatment times (1, 3, and 5 min). Using instrumental methods of analys...

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Bibliographic Details
Published in:Surface engineering and applied electrochemistry 2020-03, Vol.56 (2), p.222-227
Main Authors: Alekseeva, M. Yu, Dryakhlov, V. O., Shaikhiev, I. G., Galikhanov, M. F., Nizameev, I. R.
Format: Article
Language:English
Subjects:
Discharge
Efficiency
Electric potential
Emulsions
Engineering
Machines
Manufacturing
Membranes
Processes
Separation
Surface properties
Surface structure
Ultrafiltration
Voltage
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Summary:Ultrafiltration polysulfonamide (PSA) membranes with a molecular weight cutoff of 100 kDa have been treated in a unipolar corona discharge field in an air atmosphere at varying voltage (5, 15, 25, and 35 kV) and corona discharge treatment times (1, 3, and 5 min). Using instrumental methods of analysis, it has been revealed that the treatment leads to changes in the surface structure of the membrane, namely, an increase in the roughness and hydrophilicity and, as a consequence, in the flux and separation efficiency for a model water-in-oil emulsion. It has been found that the maximum efficiency (89.3%) is exhibited by a PSA membrane treated with a corona discharge at a voltage of 35 kV for 5 min.
ISSN:1068-3755
1934-8002
DOI:10.3103/S1068375520020027