Summary
Polysulfonamide membranes
with the molecular
weight cut-off 20 kDa (pore size 0.01 µm) were treated
for 1.5 min. in a flow of the radio frequency (RF)
capacitive plasma of a low pressure glow discharge in
argon and nitrogen at
a voltage of the anode U
a
= 1.5 kV.
Instrumental methods of the analysis revealed a change in
the structure of the membrane surface: in topography –
reduction of roughness, the decrease in the wetting angle
from 59.6° to 47.9°, and the formation of oxygen-
containing functional groups resulting from the plasma
treatment at the indicated parameters. Experiments in of
the membrane separation of 3% oil-water sludge, which
were the base for the demonstration of the intensification
of the process using plasma-modified polysulfonamide
membranes.
Keywords: polysulfonamide membrane, plasma,
treatment, oil-water sludge, separation efficiency.
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