FIELD: process engineering.
SUBSTANCE: invention relates to production of membranes, particularly, pervaporation composite membranes and may be used for separation of mixes by pervaporation or nanofiltration. Membrane consists of porous backing and coating of poly(1-trimethyl silyl-1-propyne) including filler of aggregates. Coating maximum thickness makes 25 mcm. Proposed method comprises application of poly(1-trimethyl silyl-1-propyne) solution, its evaporation and thermal treatment for removal of residual amount of solvent.
EFFECT: high selectivity combined with increased rate of pervaporation flow.
16 cl, 3 dwg, 1 tbl, 5 ex
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