Method of manufacturing porous membrane and porous membrane manufactured by the same method.

摘要

A method of manufacturing a porous membrane by dissolving vinylidene fluoride polymer in a good solvent such as acetone and then causing solidification of the resultant solution in a non-solvent. The dissolution of the vinylidene fluoride polymer in the solvent is done in a predetermined pressur condition, namely 0.1 kg/cm<2> or above, preferably in a range of 0.5 to 5.0 kg/cm<2>.