FIELD: membrane engineering.
SUBSTANCE: objective of invention is separation of liquids, in particular in medicine, pharmaceutical and food industries when creation of especially pure solutions is envisaged. Invention provides semipermeable acetate cellulose membrane consisting of porous support and polymeric working layer, which is characterized by that polymeric working layer is made of acetate cellulose or acetate cellulose/hydrate cellulose mixture, weight ratio (0.01-0.8):(99.99-99.2), ratio of maximum pore size to minimum pore size in polymeric working layer not exceeding 1.4. Invention also discloses a method for preparation of proposed membrane.
EFFECT: increased choice of inexpensive liquid/liquid separation membranes.
4 cl, 8 ex
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