| abstract |
PROBLEM TO BE SOLVED: To provide a semi-aromatic polyamide-based porous material having excellent heat resistance, low water absorption, chemical resistance in addition to pure water permeation performance, fractionation performance, and strength, as well as excellent process controllability, cost performance, and pore formation. A membrane and a method for manufacturing the same are provided. A semi-aromatic polyamide-based porous membrane of the present invention is made of a membrane material containing semi-aromatic polyamide as a main component, and has an average pore diameter of 0.01 to 10 μm on the membrane surface. This porous membrane has fine pores with an average pore size of 3 μm or more on the membrane surface, a pure water permeation rate of 30000 L / m 2 / hr / 98 kPa or more, and a fractional particle size of 1 μm or more. The porous membrane is formed by thermally induced phase separation between the membrane material and the solvent. [Selection figure] None |