POROUS ANIONIC POLYKETONE MEMBRANE

摘要

PROBLEM TO BE SOLVED: To provide a porous anionic polyketone membrane which has heat resistance and chemical resistance, where the highly accurate fractionation of an anionic particle is possible and which is useful as a long life filter for filtration and as a filter for filtration capable of removing a cationic particle, a gel and a cation.SOLUTION: A porous polyketone membrane consisting of a polyketone including a 1-oxotrimethylene repeating unit denoted as chemical formula (1): has a porosity of the porous membrane of 5-90% and a zeta potential of -80 to -10 mV.