FIELD: process engineering.
SUBSTANCE: invention relates to production of flat porous hydrophilic membrane from polyethersulfone with pore size varying from 0.1 to 1 mcm intended for fabrication of disk flat and cartridge corrugated filtration elements thereof. Proposed method exploits phase decomposition wherein precipitator treatment by vapors is executed in maintaining constant concentrations of saturated vapors of precipitator and solvent in climatic chamber. Precipitator vapors are produced from mix of water with aliphatic monohydroxy alcohol with carbon atom number varying from 1 to 3.
EFFECT: preventing formation of surface layers with lower porosity, and solvent evaporation in processing by precipitator vapors.
10 cl, 8 dwg, 8 tbl, 8 ex
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